As orthopedic surgery advances rapidly toward precision, digitization, and personalization, intelligent sensing dynamic guidance——an emerging technology, provides objective evidence for surgical judgment through real-time quantification of intra-operative biomechanical and spatial position data. It finds applications in joint surgery, spine surgery, sports medicine, and trauma management. To promote the clinical application of this technology, the Joint Surgery Group of Chinese Orthopaedic Association issued the “Expert consensus on the application of intelligent sensor-based dynamic guidance technology in orthopaedic surgery” by the modified Delphi method (five rounds of expert assessment), including on the clinical evidence and experience. This consensus includes the indications, technical characteristics, effectiveness, safety, and comparisons between this technology and traditional therapy or other digital-intelligent technologies, and 14 recommendations are elaborated. It provides practical guidance for clinical practice and facilitates further dissemination and implementation of intelligent orthopedic surgery in China.

Autologous bone storage and reuse represent an important strategy for the repair and reconstruction of bone defects. With the increasing number of procedures such as joint arthroplasty, trauma repair, and bone tumor reconstruction, opportunities for harvesting autologous bone and its potential applications continue to expand. For patients who may require staged reconstruction, revision surgery, or bone grafting in the future, intraoperative preservation of autologous bone can reduce the need for secondary bone harvesting and improve the efficiency of bone resource utilization. However, under the frameworks of informed consent, ethical review, and regulatory requirements, standardized protocols for the procurement, processing, testing, storage, transportation, and clinical application of autologous bone remain lacking. This expert consensus was developed based on a comprehensive review of the literature, existing tissue bank regulations, and current technical standards, with reference to the American Association of Tissue Banks (AATB), YY/T 0513.1-2019, GB/T 36988-2018, and the Group Standard for Autologous Bone Tissue Banks (T/FDSA 0079-2025). It was formulated through iterative discussions and deliberations among multidisciplinary experts, taking into account the practical needs of orthopedic clinical practice in China. This consensus proposes that autologous bone storage should be integrated into a comprehensive management system covering the entire process, including preoperative evaluation, informed consent, intraoperative procurement, labeling and registration, cold-chain transportation, stratified storage, release verification, and clinical application, rather than being regarded as a single low-temperature preservation technique. At the implementation level, standardized handover procedures and cold-chain management between operating rooms and bone banks are recommended. Storage should preferably be performed under deep cryogenic conditions (−196 ℃), supported by a robust quality management system and risk contingency plans. Clinical application should differentiate among autologous use and legally compliant familial use or donation scenarios, with clearly defined indications, contraindications, screening criteria, and ethical requirements. From ethical and legal perspectives, issues including tissue ownership, informed consent, privacy protection, and disposal pathways following termination of storage should be explicitly addressed. This consensus mainly covers: (1) clinical workflows and standardized bone bank management; (2) quality control and risk management in storage and transportation; (3) safety and stability of long-term deep cryogenic storage; (4) cross-regional cold-chain transportation; (5) indications and contraindications for autologous bone storage; (6) principles of clinical application; (7) ownership and legal attributes of autologous bone tissue; (8) patient rights and privacy protection; and (9) compliant disposal following abandonment of storage. This consensus aims to provide standardized, practical, and traceable guidance for medical institutions in the procurement, storage, and clinical application of autologous bone tissue, thereby promoting safe, regulated, and legally compliant practices and advancing standardization in this field.

To compare the clinical efficacy of arthroscopic augmented repair of rotator cuff injuries using artificial dermis (Pelnac) versus acellular allogeneic dermis, and to provide evidence for graft selection in clinical practice.

Clinical data of 39 patients with rotator cuff injuries treated in the orthopaedics department of Guangzhou Red Cross Hospital affiliated to Jinan University, from June 2021 to May 2025 were retrospectively analyzed. Inclusion criteria: tendon retraction distance ≥three centimetres, the preoperative Goutallier grade (fatty infiltration of the rotator cuff muscles) ≥grade two; no local osseous lesions, tolerant of patch augmentation, good cognitive function, and good compliance. Exclusion criteria: osteoarthritis, humeral head fracture, Bankart lesion, nerve palsy history, unauthorized use of drugs affecting efficacy or receipt of other treatments during the treatment period, end-stage malignant tumors. According to patch type, the patients were divided into an artificial dermis (Pelnac) group ( artificial group) (n=20) and the acellular allogeneic dermis group (acellular dermis group) (n=19). All the patients underwent a double-row anchor suture plus patch-covering procedure. T test, chi square test, and Mann-Whitney U test were used to compare shoulder range of motion, visual analogue scale (VAS) score, Constant-Murley score, and tendon thickness between the two groups.

There were no statistically significant differences in baseline data between the two groups (all P>0.05). Before treatment, no statistically significant differences were found in any observed indicators between the two groups (P>0.05). After treatment, shoulder range of motion and Constant-Murley score were significantly improved in both groups compared with those before treatment (all P<0.05), while VAS score was significantly decreased (Z=-3.983, -3.879, both P<0.05). After treatment, Constant-Murley scores were 77±6 in the artificial group and 76±4 in the acellular dermis group, VAS scores were 1.0 (1.0, 2.0) and 1.0 (1.0, 2.0) repectivley, as well as tendon thickness (8.4±0.6) mm and (8.3±0.8) mm repectivley. There was no statistically significant difference between the two groups in (all P>0.05). No statistically significant difference was found in postoperative shoulder range of motion between the two groups (all P>0.05).

Both artificial dermis (Pelnac) and acellular allogeneic dermis patches achieved favorable efficacy in augmented repair of rotator cuff injuries.

To evaluate the clinical efficacy and complications of arthroscopic tension band wiring with Kirschner wires for coronoid process fractures combined with mini-incision repair of lateral collateral ligament injuries in the treatment of varus posteromedial rotatory instability (VPMRI) of the elbow.

This was a retrospective case-control study. Between March 2019 and September 2022, a total of 20 patients with cubitusvarus and posteromedial rotatory instability who were treated at Xuzhou Renci Hospital were enrolled. Patients with pre-existing elbow stiffness were excluded. The cohort comprised nine males and 11 females, with four left and 16 right elbow injuries. All the patients underwent arthroscopic Kirschner wire tension band fixation for the coronoid fracture combined with a small-incision repair of the lateral collateral ligament injury.Observation indicators included operation time, intraoperative blood loss, elbow range of motion (flexion, extension, internal rotation, external rotation), the visual analogue scale (VAS) for pain, and the Mayo elbow performance score (MEPS). Complications (heterotopic ossification, joint stiffness, nerve injury, skin irritation), patient satisfaction, and fracture healing were recorded. Paired t tests were used for statistical comparisons.

All the patients were followed up for (16±5) months. The mean age was (30±12) years. The mean operation time was (85±11) min, and the mean intraoperative blood loss was (56±10) ml. At the final follow-up, the elbow range of motion [flexion (137.3±8.6)°, extension (-1.5±2.8)°, internal rotation (84.3±5.3)°, external rotation (82.3±8.3)°] showed significant improvement compared to preoperative values [(61.3±10.1)°, (-16.5±7.5)°, (43.1±9.8)°, (40.3±6.5)°] (t=25.622, 8.379, 16.538, 17.817, all P<0.05). The final MEPS was 97±4 significantly higher than the preoperative score of 42±7 (t=30.509, P=0.001). The final VAS score was 1.3±0.6, significantly lower than the preoperative score of 7.1±1.3 (t=18.116, P=0.001).

Although arthroscopic tension band fixation of coronoid fractures combined with mini-open lateral collateral ligament repair for VPMRI is technically demanding, it allows early postoperative rehabilitation and reduces complications.

To identify preoperative muscle compositions of operated and contralateral sides and examine the association with postoperative walking and chair-raising outcomes after unilateral total hip arthroplasty (THA).

This retrospective study included 305 patients who underwent unilateral primary THA due to femoral head necrosis or hip osteoarthritis from January 2022 to December 2023. Exclusion criteria were: a history of long-term bedridden, prior hip surgery history on the operative side, hip dysplasia, severe complications after THA, incomplete imaging or functional data. A total of 133 patients were included in this study. Bilateral total muscle area index (TMI), normal attenuation muscle area index (NAMI) and fat infiltration (FI) of hip muscles were examined on a preoperative axial CT image. Six-meter walking test (6mWT) and five times sit-to-stand test (5-STST) were conducted at three-month follow-up. Paired t test or Wilcoxon rank sum test were used to compare the differences between bilateral muscle compositions. Pearson correlation coefficients were calculated to determine the factors associated with 6mWT and 5-STST results. Factors with P<0.1 in the univariate analysis were included in multivariate linear regression analysis.

Preoperatively, TMI was significantly higher on the contralateral side of gluteus maximus (t=-10.700, P<0.001), gluteus medius (Z=-3.407, P=0.001), iliopsoas (t=-6.839, P<0.001), and rectus femoris (t=-6.327, P<0.001) compared with the operative side. In terms of muscle quality, NAMI was significantly higher and FI was significantly lower on the contralateral side of gluteus maximus (NAMI: t=-12.359, P<0.001, FI: Z=-8.774, P<0.001), gluteus medius (NAMI: t=-8.213, P<0.001, FI: Z=-8.241, P<0.001), gluteus minimus (NAMI: t=-5.110, P<0.001, FI: Z=-7.063, P<0.001), iliopsoas (NAMI: t=-9.010, P<0.001, FI: Z=-7.587, P<0.001), piriformis (NAMI: Z=-5.841, P<0.001, FI: Z=-6.569, P<0.001), and rectus femoris (NAMI: t=-6.835, P<0.001, FI: Z=-4.500, P<0.001) compared with the operative side. In multivariate regression analysis, age (B=0.123, P<0.001) and contralateral gluteus minimus FI (B=5.948, P=0.013) were independently positively associated with 5-STST time. Contralateral gluteus maximus TMI (B=-0.438, P=0.001) was independently negatively associated with 5-STST time. Age (B=-0.006, P<0.001) and contralateral iliopsoas FI (B=-1.178, P<0.001) were independently negatively associated with 6mWT speed. Contralateral gluteus minimus TMI (B=0.047, P=0.025) was independently positively associated with 6mWT speed.

The preoperative muscle qualities of gluteus maximus, gluteus minimus and iliopsoas on the non-operative side were significantly associated with postoperative gait and sit-to-stand abilities at the three-month follow-up.

To analyze the epidemiological characteristics of hip fractures in the Mindong region over a 10-year period and provide evidence for prevention and control strategies in coastal aging areas.

A single-center retrospective study was conducted using data from newly diagnosed hip fracture inpatients admitted to MinDong Hospital between January 2015 and December 2024. Inclusion criteria: diagnoses of femoral neck fracture, intertrochanteric fracture, and related hip fractures. Exclusion criteria: pathological fractures (e.g., tumor metastasis, severe osteoporosis-excluded bone diseases), old fractures, periprosthetic fractures after hip fracture surgery, and patients with missing critical information (age, sex, fracture type). Data collected included patient demographics (gender, age, age stratification, season, occupation, resident type, geographical characteristics, patient source), clinical information (fracture site and types, classification, surgical approach, hospitalization duration). Stratified statistical analysis was performed by year, age, and season. Non-normally distributed measurement data are presented as M (P₂₅, P₇₅), with comparisons among multiple groups using the Kruskal-Wallis test. Categorical data are presented as n (%), with intergroup comparisons using the chi-square test or Fisher’s exact test; annual trends were analyzed using the trend chi square test.

A total of 5 320 patients were enrolled, accounting for 6.2% of orthopedic inpatients, with an average annual growth rate of 10.1%. The proportion of female patients was 58.7% and showed an increasing trend from 54.0% to 64.1% (χ²=22.59, P=0.007). The median age of patients was 75 years, with elderly patients aged ≥80 years accounting for 35.4%; the proportion of patients aged >90 years increased from 4.2% in 2015 to 8.6% in 2023. Rural patients accounted for 68.9%, while the proportion of urban residents significantly increased (χ²=24.28, P=0.004). Coastal patients outnumbered mountainous area patients, but no significant difference in annual changes was observed (χ²=25.59, P>0.05). Winter was the peak incidence season (27.4%), with statistically significant differences in seasonal distribution among elderly patients (χ²=29.789, P=0.01). The surgical rate increased from 81.7% to 91.5% (P<0.001), and the proportion of joint replacement rose from 32.2% to 47.1% (χ²=68.13, P<0.001). The average length of hospital stay shortened from a maximum of 17 days to 11 days (H=371.22, P<0.001), and the median postoperative hospital stay decreased from 9 days to 7 days (H=908.54, P<0.001).

Hip fractures in the Mindong region grew rapidly, characterized by female predominance, high incidence in the elderly, and seasonal variation. This highlights the need to strengthen seasonal fall prevention, optimize perioperative management, and standardize anti-osteoporosis treatment.

To investigate the current status of social support, positive coping, psychological resilience and caregiver burden among older caregivers of elderly patients after hip fracture surgery and to analysis latent profiles of caregiver burden.

A convenience sampling method was used to select 234 older caregivers of elderly patients who underwent hip fracture surgery and admitted to the Orthopedics Center of Foshan Hospital of Traditional Chinese Medicine from February to October 2025. Inclusion criteria: age≥60 years old, family caregivers of elderly patients who spent the longest time providing care and undertook the primary caregiving responsibilities during hospitalization (care duration≥four hours per day), able to communicate effectively and understand the questionnaire. Exclusion criteria: presence of severe illness or impaired consciousness, having experienced a major stressful event within the past six months, having an employment relationship with the patient or receiving remuneration, currently participating in other studies. The investigation was conducted using a general information questionnaire, the social support appraisals scale, the simplified coping style questionnaire, the Conner-davidson resilience scale and the Zarit caregiver burden scale. Pearson correlation analysis were used to verify the correlations; a mediation model was used to examine the mediating effects of positive coping and psychological resilience on the relationship between social support and caregiver burden among older caregivers of elderly patients after hip fracture surgery. Latent profile analysis was used to investigate the heterogeneity in caregiver burden.

Among older caregivers of elderly patients after hip fracture surgery, positive coping (β=-0.115, P<0.001) and psychological resilience (β=-0.058, P<0.001) of older caregivers demonstrated significant individual mediating effects between social support and caregiver burden; positive coping and psychological resilience also showed a significant chain mediating effect between social support and caregiver burden (β=-0.074, P<0.001). The latent profile analysis of the caregiver burden could be divided into four groups: severe caregiver burden group (11.1%), moderate caregiver burden group (33.3%), moderate personal burden-mild responsibility burden group (30.3%), and mild caregiver burden group (25.2%).

The positive coping and psychological resilience among older caregivers of elderly patients after hip fracture surgery act as a chain-mediating factor between social support and caregiver burden, and their caregiver burden is heterogeneous. Medical staff can develop tailored training programs on age-friendly care based on the latent profile analysis of the caregiver burden and the relationships between various variables, in order to alleviate the challenges of aged care.

To investigate the clinical application of a deep-learning model based on six-degree-of-freedom (6DOF) lower-limb gait kinematics for bedside prediction of fall risk in hospitalized older adults.

This cross-sectional study enrolled 207 hospitalized older adults (65 to 93 years) from the orthopedic wards of Guangdong Provincial People’s Hospital. Inclusion criteria: age≥60 years, clear consciousness, and the ability to walk independently for at least 10 m. Patients unable to complete gait testing due to severe trauma or acute complications were excluded. Lower-limb 6DOF gait kinematic data were collected using a motion-capture system. According to the Morse fall scale (MFS), participants were categorized into low-, medium-, and high-risk groups. Gait time-series data were transformed into two-dimensional gait maps and analyzed using an attention-enhanced one-dimensional convolutional neural network (1D-CNN). Model performance was evaluated using accuracy, precision, recall, and F1 score, and further assessed with receiver operating characteristic (ROC) curves and confusion matrix analysis.

A total of 207 participants were included, comprising 59 high-risk, 72 medium-risk, and 76 low-risk individuals. On the independent test set (n=41), the model achieved an accuracy of 0.878, precision of 0.874, recall of 0.897, and an F1 score of 0.882. The recall for the high-risk group reached 1.000, indicating no missed high-risk fallers. ROC analysis demonstrated good discriminative ability across different risk levels.

The attention-enhanced 1D-CNN model based on 6DOF gait kinematics can effectively stratify fall risk in hospitalized older adults with high predictive performance and clinical interpretability. This approach provides an objective bedside tool for fall-risk screening in hospital settings.

To observe the clinical effect of Taohong Siwu decoction in the treatment of knee osteoarthritis, and explore its mechanism bysystems pharmacology.

A total of 60 patients with knee osteoarthritis admitted to Foshan Jianxiang Bone Injury Hospital from July 2023 to July 2024 were randomly enrolled, excluding those with poor compliance or comorbid severe cardiovascular and cerebrovascular diseases, rheumatic diseases, etc. They were randomly divided into treatment group and control group with 30 cases in each group. The treatment group was given Taohong Siwu decoction combined with extracorporeal shock wave therapy, while the control group was given oral celecoxib combined with extracorporeal shock wave therapy. Visual analogue scale (VAS) and Western Ontario and McMaster Universities osteoarthritis index (WOMAC) of knee joint were followed up after one and two months of treatment. T test was employed to compare the therapeutic efficacy between the two groups. Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform (TCMSP) was used to search and screen the active components and target of Taohong Siwu decoction. GeneCards and Online Mendelian Inheritance in Man (OMIM) Database were used to screen the targets of knee osteoarthritis disease. The intersection of the active component target of Taohong Siwu decoction and the target of knee osteoarthritis disease was selected by R software, and Venn diagram was drawn. The visualization network diagram of traditional Chinese medicine active ingredient-disease target was obtained by using the software of Cytoscape. Protein-protein interaction (PPI) of active ingredient disease target protein interaction was obtained through online string platform. Finally, gene ontology (Go) functional enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis were carried out, and then the obtained main active components were molecular docking with the core target protein, and the docking results were further visualized.

After one and two months of treatment, VAS score and WOMAC score of the two groups were lower than those before treatment, the differences were statistically significant (t=-3.24, -1.87, -5.69, -1.56, all P<0.05); compared with the control group, the VAS score and WOMAC score of the treatment group decreased more significantly after treatment, and the differences were statistically significant (t=-5.21, -6.41, -3.01, -3.69, all P<0.05). Forty compounds were screened from Taohong Siwu decoction, which could act on 120 therapeutic targets, such as serine/threonine kinase 1 (AKT1), Jun proto-oncogene (JUN), mitogen-activated protein kinase1 (MAPK1), and participate in the regulation of tumor necrosis factor, interleukin-17 and other signal pathways.

Taohong Siwu decoction can effectively relieve the symptoms of knee osteoarthritis, which may be related to the characteristics of multi-target and multi-channel regulation.

To establish a mechanical friction model between human skin and surgical drapes, verify the mechanical feasibility of the perineal-post-free traction technique in the Trendelenburg position, clarify its adaptability to patients with different body weights and analyze the safe angles, so as to provide a mechanical basis for clinical application.

(1) In vitro experiment: fresh porcine skin was used to simulate human skin. A friction coefficient tester was employed to measure the friction coefficient between porcine skin and surgical drapes under pressures of 40 mmHg and 80 mmHg, with five porcine skin specimens per group and three repeated measurements for each specimen. (2) In vivo experiment: 30 patients scheduled for hip arthroscopy using the perineal-post-free traction technique who voluntarily signed informed consent forms and met the inclusion were enrolled. The patients with history of previous hip surgery were excluded. The actual traction force and Trendelenburg angle at 10 mm of hip joint distraction were measured, the friction coefficient between skin and surgical drapes was calculated, and the consistency between in vitro and in vivo data was compared. (3) Group analysis: Patients were divided into a low-weight group (<60 kg), a medium-weight group (60–79 kg), and a high-weight group (≥80 kg). The trends of friction coefficient and angle in each group were analyzed. Statistical analysis was performed using SPSS 26.0 software. One-way analysis of variance or independent-samples t test was used for intergroup comparisons, and P<0.05 was considered statistically significant.

(1) In vitro experiment: The mean friction coefficients between porcine skin and surgical drapes under 40 mmHg and 80 mmHg were 0.371 and 0.433, respectively. The friction coefficient was positively correlated with increasing pressure (t=-3.1165, P=0.0143). (2) In vivo experiment: Thirty patients were included, consisting of 23 males and seven females. Age were from 16 to 66 years, (35±13) years on average; body weight were from 48 to 100 kg, (72±13) kg on average . The traction force ranged from 44.30 to 87.70 kg, (59.4±11.3) kg on average, the Trendelenburg angle ranged from 5.3° to 14.3°, ( 9.9±2.8)°on average, and the friction coefficient ranged from 0.43 to 1.18, 0.70±0.22 on average. (3) The applicable Trendelenburg angles for patients with low, medium, and high body weights using the perineal-post-free traction technique are 10°, 13°, and 15°, respectively.

At a Trendelenburg angle of 10° to 15°, the frictional force between skin and surgical drapes can counteract the lower-extremity traction force and ensure safe distraction of the hip joint space. For patients of different body weights, the minimum safe angle should be used to reduce complications, and a smaller body weight requires a larger angle. The findings provide important references for positioning in related orthopedic surgeries.

Non-traumatic osteonecrosis of the femoral head (NT-ONFH) is a common hip joint disease with a complex pathogenesis closely related to lipid metabolism disorders, oxidative stress, and alcohol toxicity. Acetaldehyde dehydrogenase 2 (ALDH2), a key enzyme in alcohol metabolism in humans, can lead to the accumulation of acetaldehyde or other aldehydes in the body due to reduced enzyme activity caused by gene mutations, which may further promote the occurrence and development of NT-ONFH. Studies have confirmed a significant association between ALDH2 gene polymorphisms and the onset of NT-ONFH. Individuals carrying mutant alleles (e.g., ALDH2*2) exhibit reduced alcohol metabolism capacity, making them more susceptible to microcirculatory dysfunction in the femoral head, osteoblast apoptosis, and abnormal differentiation of bone marrow mesenchymal stem cells, which accelerates the progression of osteonecrosis. This article systematically summarized the current research status on the impact of ALDH2 and its gene mutations on NT-ONFH, elucidated the underlying mechanisms at the cellular and animal experimental levels, and summarized factors related to disease progression as well as potential drugs and therapeutic targets identified in recent studies. Additionally, it analyzed the limitations and shortcomings of existing research and prospects future research directions, aiming to provide a theoretical basis for further revealing the pathogenesis of NT-ONFH and developing novel therapeutic strategies.

Robot-assisted technology has developed rapidly in modern medicine in recent years, demonstrating significant clinical value particularly in the diagnosis and treatment of complex conditions such as developmental dysplasia of the hip (DDH). Existing research indicates that when applied to various hip surgeries, this technology can enhance the accuracy of preoperative planning and, to some extent, reduce the risk of complications. In the treatment of DDH, the primary advantages of robot-assisted technology include precise localization of the surgical site, optimization of prosthesis placement, improved postoperative hip range of motion, reduction of lower limb length discrepancy, lower revision rates, promotion of postoperative rehabilitation, and maintenance of stable long-term outcomes. At the same time, as this technology becomes more widely adopted, the issues it raises regarding patient privacy protection, liability determination, and social ethics cannot be overlooked, and relevant laws and regulations still require further refinement. This article reviewed research progress in robot-assisted treatment for DDH, summarized its clinical advantages, analyzed current technical challenges as well as legal and ethical issues, and outlined future development directions. It aimed to provide guidance for overcoming key technical bottlenecks, enhancing clinical application standards, and expanding related research, thereby offering patients more precise and efficient treatment options.

The meniscal posterior root maintains knee stability. When torn, the circular structure of the meniscus is disrupted, with function similar to total meniscectomy, can induce osteoarthritis (OA). Therefore, early diagnosis and treatment of meniscal posterior root tear are crucial. Currently, the repair techniques for medial meniscus posterior root tear (MMPRT) are progressively transitioning from traditional transtibial pull-out repair toward reversed suture anchor technique. Combining these with biological augmentation agents such as platelet-rich plasma (PRP) may improve clinical outcomes. This review aimed to enhance clinicians’ understanding of the early diagnosis and treatment of posterior meniscus root tears by discussing the anatomy and biomechanics of the posterior root, injury mechanisms, clinical manifestations, imaging characteristics, and treatment options. By doing so, it sought to promote timely and appropriate treatment strategies to preserve articular cartilage function to the greatest extent and improve patients’ long-term quality of life.

To evaluate the clinical efficacy of bioceramic rod combined with recombinant human bone morphogenetic protein (rh-BMP) in the treatment of osteonecrosis of the femoral head (ONFH) at Association Research Circulation Osseuse (ARCO) stages Ⅱ and Ⅲ in young and middle-aged patients.

A total of 26 patients with ONFH admitted to the Department of Joint Surgery, the 940th Hospital of the Joint Logistics Support Force from January 2018 to June 2021 were enrolled. All the patients underwent bioceramic rod implantation combined with rh-BMP grafting. Preoperative and postoperative imaging findings, numerical rating scale (NRS) scores for pain, and Harris hip scores at preoperative and the last follow-up were recorded. Paired-samples t test was used for the comparison of indicators before and after surgery. Differences were considered statistically significant when P<0.05.

The follow-up duration was 10 to 26 months, (18.0±1.6) months on average. The hip preservation rate was 92.8% (26/28) at the last follow-up. The NRS reduced from (4.07±0.26) to (1.50±0.92) (t=14.181, P<0.001) and the Harris hip score elevated from (60.00±6.24) to (85.54±11.81) (t=-10.116, P<0.001). Hip preservation failed in two patients, who subsequently underwent total hip arthroplasty (THA). Postoperative dynamic contrast-enhanced MRI showed good blood flow signals in the bone graft and bioceramic rod implantation areas in all the patients.

Core decompression combined with bioceramic rod implantation achieves reliable short-term efficacy in the treatment of ONFH at ARCO stages Ⅱ and Ⅲ, and the therapeutic effect is more prominent in patients with ARCO stage Ⅱ ONFH.

To compare the clinical efficacy and safety of arthroscopic rotator cuff suture and meniscus suture in the treatment of meniscus injury, and to analyze the effects of the two methods on surgical indication, postoperative recovery and joint function.

Sixty-five patients with meniscus injury from department of joint sports injuries of the Fifth People’s Hospital of Ningxia Hui Autonomous Region were randomly divided into experimental group (rotator cuff suture total internal suture, n=34) and control group (meniscus suture, n=31). Operation time, intraoperative blood loss, hospital stay and pain relief time of the two groups were recorded. Visual analogue scale (VAS) and Lysholm score were used to evaluate pain and knee function before and after surgery. The data were analyzed by independent t test and chi square test.

The intraoperative blood loss (t=9.968, P<0.001), length of hospital stay (t=8.481, P<0.001) and pain relief time (t=8.800, P<0.001) of the experimental group were significantly shorter than those of the control group. Preoperative VAS score (t=0.099) and Lysholm score (t=0.334) were not significantly different between the two groups (both P>0.05). Postoperative follow-up showed that the VAS scores of both groups continued to decrease, but the scores of the experimental group were significantly lower than those of the control group (one month t=7.097, three months t=7.316, six months t=4.827, 12 months t=3.805, all P<0.001). Lysholm scores in the experimental group were higher than those in the control group during the follow-up, and the differences were statistically significant (one month t=4.565, three months t=6.193, six months t=5.283, 12 months t=5.945, all P<0.001).

Compared with meniscus suture device, rotator cuff suture hook total internal suture technique has the advantages of less surgical trauma, faster recovery and more significant improvement of joint function, which is an efficient and cost-effective minimally invasive method for the treatment of meniscus injury.