Effectiveness of single leg standing up exercise for recovery of knee muscle strength and lower extremity motion function following anterior cruciate ligament reconstruction
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Abstract
Purpose
We investigated the effectiveness of single-leg standing exercise (SLSE) as a home-based self-exercise for the recovery of knee joint muscle strength and lower limb motor function after anterior cruciate ligament (ACL) reconstruction.
Methods
In addition to postoperative rehabilitation, 55 patients who underwent ACL repair were asked to begin SLSE as a home-based self-exercise 50 times per day using a platform elevated at 40 cm for 2 months, 30 cm at 3 months, 20 cm at 4 months, and 10 cm at 5 months (intervention group). Sixty-four patients who underwent ACL reconstruction and followed the existing rehabilitation protocol were included in the control group. Isokinetic knee extension and flexion at 60° angular velocity at 3, 8, and 10 months after surgery and lower limb motor function performance at 8 and 10 months after surgery were compared within and between the two groups.
Results
Knee extension and flexion muscle strength and lower-extremity motor function recovered over time in both groups. There were no significant differences in knee extension and flexion muscle strength between the two groups at 3 months after surgery. However, knee extension strength, flexion strength, and triple hop test (THT) results were significantly higher in the intervention group (p < 0.01) 8 months after surgery. In addition, knee flexion strength and THT were significantly higher in the intervention group (p < 0.01) 10 months after surgery.
Conclusions
The results of this study suggest that SLSE can be an effective exercise for recovering knee joint muscle strength and lower limb motor function.
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