Recovering from ACL Surgery: When Can You Start Rehabilitation? - Rehabilitation

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Car accident injuries?


Hello, doctor! Three days ago, I fell off my motorcycle and suffered a torn anterior cruciate ligament (ACL).
I have already undergone reconstruction surgery.
May I start rehabilitation? When can I begin rehabilitation? Thank you!

Eve, 20~29 year old female. Ask Date: 2007/11/18

Dr. Su Hongci reply Rehabilitation


After anterior cruciate ligament (ACL) reconstruction surgery, a brace should be worn to protect the joint for approximately three months.
Rehabilitation for muscle strength should begin around three to four months post-surgery.
By five to six months, patients can resume low-impact activities such as swimming, jogging, and cycling.
By seven to eight months post-surgery, more vigorous activities can be reintroduced.
The implanted ligament typically integrates with the patient's own tissue within about six months, effectively becoming their own ligament.
Complementing rehabilitation therapy with exercises to enhance muscle strength and joint range of motion, isokinetic strength training can aid in restoring strength and endurance.

Reply Date: 2007/11/18

More Info


Recovering from ACL (anterior cruciate ligament) surgery is a critical process that requires careful planning and adherence to rehabilitation protocols to ensure optimal recovery and return to normal activities. After undergoing ACL reconstruction, the timeline for starting rehabilitation can vary based on several factors, including the surgical technique used, the extent of the injury, and the individual’s overall health and fitness level.

Typically, rehabilitation begins soon after surgery, often within the first few days. The initial phase focuses on reducing swelling, managing pain, and regaining range of motion. Gentle exercises such as ankle pumps, quadriceps sets, and straight leg raises are usually introduced early on to promote circulation and prevent stiffness. It is essential to follow your surgeon's specific recommendations regarding when to start these exercises, as they may vary based on your unique situation.

In the first week post-surgery, physical therapy may involve passive range of motion exercises, which can be performed by a physical therapist or with the assistance of a family member. The goal during this phase is to achieve full extension of the knee and gradually increase flexion. While you may feel eager to start more intensive rehabilitation, it is crucial to allow the surgical site to heal adequately before engaging in more strenuous activities.

As you progress, typically around two to four weeks post-surgery, you can begin more active rehabilitation exercises. This phase may include weight-bearing activities, such as walking with crutches or a brace, and gradually transitioning to full weight-bearing as tolerated. Your physical therapist will guide you through exercises that strengthen the muscles around the knee, improve balance, and enhance proprioception.

By six weeks post-surgery, many patients can start more dynamic exercises, including stationary biking and light resistance training. However, high-impact activities and sports-specific drills should be avoided until you have regained sufficient strength and stability in the knee. Generally, a return to sports is not recommended until at least six to nine months post-surgery, depending on your progress and the demands of your sport.

Throughout the rehabilitation process, it is vital to communicate openly with your healthcare team. If you experience any unusual pain, swelling, or instability, report these symptoms to your surgeon or physical therapist immediately. They can adjust your rehabilitation plan accordingly to ensure a safe and effective recovery.

In summary, you can start rehabilitation shortly after ACL surgery, focusing initially on gentle range of motion and strengthening exercises. As you progress, your physical therapist will guide you through more challenging activities, with the goal of returning to your pre-injury level of function. Always prioritize your body’s signals and work closely with your healthcare team to achieve the best possible outcome.

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