Application value of fixed and mobile platform prostheses in total knee arthroplasty

doi:10.3877/cma.j.issn.1674-134X.2023.06.017

Abstract

Abstract:

Objective

To compare the early effects of fixed platform prosthesis and mobile platform prosthesis in total knee Joint replacement (TKA).

Methods

Eighty five patients who had been treated with TKA in the Department of Orthopaedics and Traumatology of Fangshan District Hospital of Traditional Chinese Medicine from June 2019 to June 2021 were retrospectively selected. They were divided into fixed platform prosthesis group (n=40) and mobile platform prosthesis group (n=45) according to the different applications of platform prosthesis during surgery. Perioperative indicators and the incidence of complications within six months after surgery were collected. the knee joint score (HSS), visual analogue score (VAS), and gait spatiotemporal parameters of the New York Special Surgery Hospital before surgery and three and six months after surgery were comparee between the two groups.

Results

There was no statistically significant difference in intraoperative bleeding volume, surgical time, hospital stay, pad dislocation rate, and complication incidence between the two groups (P>0.05). At different time points, the stride length, stride speed, and single support phase of the affected side in the fixed group were higher than those in the active group, with statistically significant differences (F=21.203, 9.282, 20.388, all P<0.05). After three months of surgery, the stride length, stride speed, and single support phase of the affected side in the active group were higher than those in the fixed group (t=3.904, 14.725, 7.756, all P<0.05).

Conclusions

Both mobile and fixed platform prostheses can achieve gait improvement and satisfactory surgical results. Mobile platform prostheses in TKA may provide faster postoperative gait improvement, which can better promote early exercise and knee joint function recovery.

Key words: Arthroplasty, replacement, knee, Prostheses and implants, Treatment outcomes

Hongyu Wang. Application value of fixed and mobile platform prostheses in total knee arthroplasty[J]. Chinese Journal of Joint Surgery(Electronic Edition), 2023, 17(06): 871-876.

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Figures/Tables 6

References 9

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组别Groups	例数Case number	年龄[岁，(±s)]Age(year)	病程[个月，(±s)]Course of disease(month)	疾病类型(骨关节炎/类风湿性关节炎)Disease type(osteoarthritis/rheumatoid arthritis)	患侧(右/左)Affected side(right /left)	ASA Ⅱ/Ⅲ分级(例)ASA Ⅱ/Ⅲ grading	膝关节活动度[°，(±s)]Knee joint range of motion
活动组Mobile group	45	57.3±4.8	30.0±2.3	30/15	21/24	32/13	100.0±9.2
固定组Fixed group	40	59.1±4.6	29.7±3.0	25/15	16/24	30/10	102.8±10.7
统计值Statistical value		t＝1.760	t＝0.521	χ²＝0.161	χ²＝0.383	χ²＝0.162	t＝1.297
P值		>0.05	>0.05	>0.05	>0.05	>0.05	>0.05

组别Groups	例数Case number	年龄[岁，(±s)]Age(year)	病程[个月，(±s)]Course of disease(month)	疾病类型(骨关节炎/类风湿性关节炎)Disease type(osteoarthritis/rheumatoid arthritis)	患侧(右/左)Affected side(right /left)	ASA Ⅱ/Ⅲ分级(例)ASA Ⅱ/Ⅲ grading	膝关节活动度[°，(±s)]Knee joint range of motion
活动组Mobile group	45	57.3±4.8	30.0±2.3	30/15	21/24	32/13	100.0±9.2
固定组Fixed group	40	59.1±4.6	29.7±3.0	25/15	16/24	30/10	102.8±10.7
统计值Statistical value		t＝1.760	t＝0.521	χ²＝0.161	χ²＝0.383	χ²＝0.162	t＝1.297
P值		>0.05	>0.05	>0.05	>0.05	>0.05	>0.05

组别Groups	例数Case number	术中出血量[ml，(±s)]Intraoperative bleeding volume	手术时间[min，(±s)]Surgical time	住院时间[d，(±s)]Hospitalization time	衬垫脱位率[例(%)]Pad dislocation rate
活动组Mobile group	45	307±50	67±7	21±4	5(11.1)
固定组Fixed group	40	295±46	64±8	20±4	0
统计值Statistical value		t＝1.136	t＝1.477	t＝1.173	－
P值		>0.05	>0.05	>0.05	0.057^*

组别Groups	例数Case number	术中出血量[ml，(±s)]Intraoperative bleeding volume	手术时间[min，(±s)]Surgical time	住院时间[d，(±s)]Hospitalization time	衬垫脱位率[例(%)]Pad dislocation rate
活动组Mobile group	45	307±50	67±7	21±4	5(11.1)
固定组Fixed group	40	295±46	64±8	20±4	0
统计值Statistical value		t＝1.136	t＝1.477	t＝1.173	－
P值		>0.05	>0.05	>0.05	0.057^*

组别Groups	例数Case number	下肢血栓Lower limb thrombosis	髌骨不稳Patellar instability	感染Infection	总发生率Overall incidence
活动组Mobile group	45	1(2.2)	0	1(2.2)	2(4.4)
固定组Fixed group	40	2(5.5)	1(2.5)	2(5.5)	5(17.8)
χ²值					1.818
P值					>0.05

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