To discuss the clinical efficacy of the method of Fast-Fix combined with blood clot suture meniscus injury method under arthroscope.

A clinical study was conducted, and the postoperative outcome was evaluated on 31 patients who underwent Fast-Fix combined with blood clot suture meniscus injury method, and admitted to the Department of Bone and Joint and Sports Medicine of Qingdao Municipal Hospital from April 2016 to April 2017. The subjects were 18 males and 13 females aged eight to 45 years, with an average age of (32±8) years. Patients voluntarily participated in the trial after learning about the risks and the purpose of the trial. Inclusion criteria: the initial unilateral meniscus injury, which does not involve other intra-articular injuries, or lower extremity vascular nerve injury; knee pain and interlocking, no obvious joint limitation or general daily activities. The patients with other injuries in the knee joint, old meniscus injury, neurovascular injury and congenital knee malformation were excluded. The damage, location, and extent of the meniscus were observed under arthroscopy to determine whether it was accompanied by damage in other joints or ligaments. Application of meniscus repair suture system combined with blood clot trimming suture was performed to treat meniscus injury under arthroscope. The patients were observed for rehabilitation at three months and six months after the surgery, and the visual analog scale (VAS) score, 2000 International Knee Documentation Committee(IKDC 2000)score, and Lysholm joint function score were performed. The repeated ANOVA was used to compare the differences of VAS score, IKDC 2000 score and Lysholm score at different time points.

All the patients were followed up without postoperative knee pain, interlocking, secondary surgery and complications. According to the data analysis, the difference of VAS scores at different time was statistically significant (F=963.131, P<0.01). The preoperative VAS score was significantly higher than that of the postoperative three months (t=-33.897, P<0.01), and six months after surgery, but there was no significant difference in VAS scores between three months and six months after surgery (t =-1.000, P >0.05). There were significant differences in IKDC 2000 scores (F =4688.837, P <0.01) and Lysholm scores (F =11544.044, P<0.01) at different times. The preoperative IKDC 2000 score and Lysholm score were significantly lower than those after three months (t =76.205, P <0.01; t =128.766, P <0.01) and after six months (t= 78.183, P <0.01; t=131.180, P <0.01). There was no significant difference in IKDC 2000 scores (t =1.496, P >0.05) and Lysholm scores (t =1.896, P >0.05) between three months and six months after the surgery.

Good postoperative outcomes can obtain from the method of Fast-Fix combined with clot suture meniscus injury method; the mechanism of blood clots promoting meniscus healing is still unclear, and need further research.