Recovering from ACL Injury: Effective Rehab Strategies for Knee Pain - Rehabilitation

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I have a torn anterior cruciate ligament (ACL) in my knee, and my knee is swollen?


Hello Dr.
Cheng,
Last October, I fell off my motorcycle, resulting in a neck fracture of my left femur.
At the time of the fall, my leg was straight, so my knee was also injured.
However, when I was taken to the hospital, the focus was on my more severe thigh injury, and my knee seemed to be fine, so it was overlooked.
It wasn't until January of this year that my knee started swelling and becoming increasingly painful, to the point where the pain was unbearable.
After the New Year, I underwent arthroscopic surgery, and the doctor informed me that my anterior cruciate ligament (ACL) was torn.
The surgery relieved some of the pressure by draining the pus from my knee, which made me feel much better, but after a while, the swelling returned.
Fortunately, with medication, the swelling is not as severe or painful as before.

It has been about a month since my arthroscopic surgery, but my knee is still swollen and painful, showing no signs of improvement.
Sometimes, it feels noticeably warmer than my other knee.
Currently, I can only flex and extend my knee to about 135 degrees, and when I reach the limit, it feels very tight.
Occasionally, I experience pain when bending or straightening my knee.

I would like to ask you:
1.
My femur fracture is healing, but since I have been inactive for four months, my left glute has atrophied.
What rehabilitation exercises should I do now?
2.
Will applying ointment to my knee be effective? What rehabilitation exercises should I perform? Should I use heat or ice therapy? I am worried that even if my thigh heals, I might still have difficulty walking due to my knee issues.

3.
During my recovery period, my left foot has been inactive, and the swelling in my knee has caused my foot to also swell.
Besides elevating my foot while lying down, what other rehabilitation exercises can I do?
Thank you very much.

Wú jìn yì, 40~49 year old female. Ask Date: 2006/03/11

Dr. Zheng Shunping reply Rehabilitation


In response to your question: Based on your description of the condition, the fracture should be nearly healed.
It is important to actively engage in rehabilitation exercises, focusing on strengthening the hip joint's flexion and abduction.
As for applying ointments, this is symptomatic treatment and has limited benefits for the anterior cruciate ligament of the knee.
It is recommended to primarily use heat therapy, followed by local ice application within half an hour after rehabilitation exercises.
Overall, it is advisable for you to seek comprehensive rehabilitation treatment at a hospital, as this would be more beneficial for you.

Reply Date: 2006/03/11

More Info


Recovering from an ACL injury, especially following a significant trauma like a motorcycle accident, can be a challenging process. It’s crucial to approach rehabilitation with a well-structured plan that addresses both the knee and the associated muscle atrophy from lack of movement. Here’s a comprehensive strategy to help you navigate your recovery effectively.


1. Rehabilitation Exercises
Given that your thigh bone fracture is healing and you have experienced muscle atrophy in your left gluteal region, it’s essential to start with gentle rehabilitation exercises that promote mobility and strength without overloading your knee. Here are some recommended exercises:
- Quadriceps Sets: While sitting or lying down, tighten your thigh muscle (quadriceps) and hold for 5-10 seconds. Repeat this 10-15 times. This exercise helps strengthen the quadriceps without putting too much strain on the knee.

- Straight Leg Raises: Lying on your back, keep one leg bent and the other straight. Slowly lift the straight leg to the height of the bent knee, hold for a few seconds, and lower it back down. This helps strengthen the quadriceps and hip flexors.

- Heel Slides: While lying down, slowly slide your heel towards your buttocks, bending your knee as much as you can without pain. This exercise helps improve knee flexion.

- Bridges: Lying on your back with your knees bent, lift your hips off the ground while squeezing your glutes. This exercise strengthens the glutes and hamstrings, which are crucial for knee stability.

- Calf Raises: Stand and slowly raise your heels off the ground, balancing on your toes. This helps strengthen the calf muscles, which support the knee.


2. Pain Management and Treatment
Regarding the use of topical medications, they can provide temporary relief from pain and inflammation, but they should be used in conjunction with physical therapy. Always consult your physician before starting any new medication.
For managing swelling and pain, both ice and heat can be beneficial, but they serve different purposes:
- Ice Therapy: Use ice packs for 15-20 minutes several times a day, especially after exercises. Ice helps reduce swelling and numbs pain.

- Heat Therapy: Heat can be applied before exercises to help relax the muscles and improve blood flow. However, avoid heat if there is significant swelling.


3. Addressing Swelling and Mobility
To manage swelling in your foot and promote circulation, consider the following:
- Elevation: Continue to elevate your leg whenever possible. This helps reduce swelling in the foot and ankle.

- Ankle Pumps: While lying down, flex and point your toes to promote circulation in your lower leg and reduce swelling.

- Gentle Range of Motion Exercises: Move your ankle in circles and flex it up and down to maintain mobility and prevent stiffness.


4. Gradual Progression
As your knee begins to feel better, gradually increase the intensity of your exercises. Consult with a physical therapist who can tailor a rehabilitation program specific to your needs and monitor your progress. They can also introduce more advanced exercises, such as balance training and functional movements, as your strength and mobility improve.


Conclusion
Recovery from an ACL injury and associated complications requires patience and a structured approach. Focus on gentle rehabilitation exercises, manage pain and swelling effectively, and gradually increase your activity level. Always consult with your healthcare provider or physical therapist before starting any new exercise regimen or treatment plan. With dedication and the right strategies, you can regain strength and mobility in your knee and thigh, allowing you to return to your normal activities and prevent future injuries.

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