Study on the rehabilitation effect of SAQ training on anterior cruciate ligament injury

Objective: To observe the rehabilitation effect of SAQ training on knee flexion Angle, knee extension Angle, balance function and overall knee function in patients with anterior cruciate ligament injury. Methods: A total of 36 patients with anterior cruciate ligament injury who were hospitalized or treated in the outpatient department of Beijing Rehabilitation Hospital Affiliated to Capital Medical University from September 2021 to September 2024 were selected, and all patients were randomly divided into control group (n=30) and experimental group (n=30) by using digital table method. The control group received routine rehabilitation training, including joint motion training, strength training, core stability and balance/proprioceptive training; The experimental group was given SAQ training on the basis of the control group for a total of 4 weeks. The knee flexion Angle, knee extension Angle, ellipse area of pressure center movement, length of movement track and lysholm score of the two groups were compared before intervention and 4 weeks after intervention. Results: Before treatment, there were no significant differences in knee flexion Angle, knee extension Angle, balance instrument pressure center motion track length, elliptic area and lysholm score between the two groups (P > 0.05). After 4 weeks of treatment, the knee extension Angle in control group had no significant improvement compared with before treatment (P > 0.05), and no significant difference compared with experimental group (P > 0.05). Knee flexion Angle, balance instrument pressure center motion track length, elliptic area and lysholm score were significantly improved after treatment (P < 0.05), and the experimental group were significantly better than the control group (P < 0.05). Conclusion: SAQ training can effectively improve knee flexion Angle, balance function and overall knee function in patients with anterior cruciate ligament injury, and the rehabilitation effect is better than conventional rehabilitation training. However, for the improvement of the knee extension Angle, the rehabilitation effect is still controversial, which may be related to the small change of the knee extension Angle itself and the small sample size, resulting in experimental errors. The research protocol has been registered in the Chinese Clinical Trial Registry (Registration Number: ChiCTR2400085068).The registration date of the trial is May 30, 2024, and the registration institution is Beijing Rehabilitation Hospital Affiliated to Capital Medical University.“Retrospectively registered”