What is the knee flexion progression for rehabilitation exercises after anterior cruciate ligament (ACL) reconstruction surgery?
Aug 04, 2023
Source: Cainiu Health
Dr. Lin Yunfei
Introduction
Anterior cruciate ligament (ACL) reconstruction is a common knee surgery, and postoperative rehabilitation exercises are crucial for restoring knee function. Among these exercises, knee flexion is an important component. Generally, flexion should not exceed 90 degrees during the first 1–2 weeks after surgery, 120 degrees between weeks 3–4, 140 degrees between weeks 5–6, and by weeks 7–8, full range of motion is typically achieved.
Anterior cruciate ligament (ACL) reconstruction is a common knee surgery, and postoperative rehabilitation training is crucial for restoring knee function. Among the exercises, knee flexion is an important component. Generally, flexion should not exceed 90 degrees within the first 1–2 weeks after surgery, 120 degrees between weeks 3–4, 140 degrees between weeks 5–6, and full range of motion is typically achieved by weeks 7–8. Specific guidelines are as follows:
1. Weeks 1–2 Post-Surgery
During the first 0–3 days after surgery, patients should wear a knee brace as prescribed by their doctor. The brace must be worn 24 hours a day, and no rehabilitation exercises should be performed. From day 3 to week 2, initial rehabilitation exercises can begin. It is recommended to perform "pendulum leg" exercises, gradually increasing the degree of flexion. By the end of week 2, flexion generally should not exceed 90 degrees.
2. Weeks 3–4 Post-Surgery
By this time, the bandages are usually removed, and patients may begin walking with crutches. For rehabilitation, wall-sliding exercises are commonly used. Flexion should generally not exceed 120 degrees by week 4.
3. Weeks 5–6 Post-Surgery
Patients are generally able to walk without crutches at this stage. Rehabilitation exercises should focus on improving balance and stability during single-leg and double-leg standing, enhancing overall coordination. When performing wall-sliding exercises, flexion should generally not exceed 140 degrees.
4. Weeks 7–8 Post-Surgery
By weeks 7–8, patients can typically ride a stationary bike, step over obstacles, perform full squats, and achieve nearly full range of motion. Normal walking and daily activities can usually resume at this point.
Patients are advised to seek medical attention promptly if discomfort occurs and to follow standardized treatment under a physician's guidance, which helps promote recovery.
