ACL and Meniscus Injuries: Treatment Options and Recovery - Orthopedics

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Anterior cruciate ligament tear and meniscus tear?


Hello Doctor: Three years ago, I had a rupture of the right posterior cruciate ligament (PCL) (MRI was done but no surgery was performed).
In July or August, an MRI showed a tear in the medial meniscus of the right knee (in a healing area) and a tear in the anterior cruciate ligament (ACL) (not completely torn), with swelling in the knee.
The doctor suggested surgery (the doctor insisted) or putting on a cast (which would lead to muscle stiffness and slow healing), and I chose to use a cast.
The cast has been on for 4 weeks, but the knee still hurts.

1.
The previous MRI showed a rupture of the PCL, but this time it shows a tear in the ACL.
Is this normal? (The doctor said that with swelling in the knee, both the anterior and posterior cruciate ligaments should have been injured, but the PCL may not be clearly visible on the MRI.)

2.
After 2 to 3 months of immobilization, once the cast is removed, will there be no further issues? (The doctor said at least 6 to 8 weeks of immobilization is necessary, as cartilage and ligament injuries heal slowly, and X-rays cannot show the recovery status of cartilage and ligaments.)
3.
The doctor advised me to put weight on my foot as long as it doesn't hurt to prevent osteoporosis, but my foot swells and becomes inflamed after weight-bearing.
Is this acceptable? (Will this cause repeated inflammation or injury to the ligaments and cartilage?)
[Response Date] 2011/10/10
[Response] Doctor: Miaoli Hospital / Orthopedics / Dr.
Shih Kuo-Cheng
Regarding your questions, it is possible to have different areas of tears from two separate injuries.
If the ligaments are not completely torn, immobilization with a cast can allow for a certain degree of recovery.
Swelling after weight-bearing is normal; elevating the leg can help reduce it.

Follow-up question: Excuse me, how long should the cast be kept on for optimal recovery? (The doctor indicated that cartilage and ligaments heal slowly, and a follow-up at eight weeks will determine whether to remove the cast or continue immobilization.
There was no clear indication for when to remove it, and I am concerned that removing it too early may hinder healing, while delaying removal could lead to rehabilitation issues.)
Should I remove the cast after eight weeks, or is it better to keep it on longer while I’m still young to avoid long-term complications? How long is suitable for cast immobilization? Thank you, doctor.

A Yi, 30~39 year old female. Ask Date: 2011/10/10

Dr. Shi Guozheng reply Orthopedics


Follow the physician's instructions regarding the fixed schedule, and discuss any detailed circumstances with your attending physician.

Reply Date: 2011/10/10

More Info


Understanding ACL and Meniscus Injuries: Treatment Options and Recovery
Knee injuries, particularly those involving the anterior cruciate ligament (ACL) and meniscus, are common in athletes and active individuals. Your situation, involving a previous ACL tear and a recent meniscus injury, is quite complex and requires careful consideration of treatment options and recovery strategies.

1. Understanding the Injuries:
The ACL is crucial for stabilizing the knee during movement, while the meniscus acts as a shock absorber and provides cushioning between the femur and tibia. An ACL tear can lead to instability in the knee, while a meniscus tear can cause pain, swelling, and limited range of motion. It’s not unusual for injuries to present differently over time, especially if there are multiple injuries involved. The MRI findings you mentioned indicate that while the ACL may not be completely torn, it can still be compromised, leading to instability and pain.

2. Treatment Options:
The decision between surgical intervention and conservative management (like casting) often depends on the severity of the injuries, the patient’s activity level, and their overall health. In your case, the doctor suggested surgery or casting, and you opted for casting. This conservative approach can be effective, especially for partial tears or injuries in the healing zone of the meniscus. However, it’s essential to follow the doctor's advice regarding the duration of immobilization. Typically, a period of 6 to 8 weeks is recommended for soft tissue injuries to allow for adequate healing.

3. Recovery Timeline:
After the cast is removed, rehabilitation becomes crucial. The timeline for recovery can vary significantly based on the extent of the injuries and the individual’s response to treatment. While some patients may feel ready to return to activities shortly after cast removal, others may require more time. It’s essential to engage in a structured rehabilitation program that focuses on restoring strength, flexibility, and stability to the knee.
4. Managing Swelling and Pain:
It’s common for the knee to swell after weight-bearing activities, especially if the ACL and meniscus are compromised. If you experience swelling after walking, it’s advisable to rest, ice the knee, and elevate it to reduce inflammation. Gradually increasing activity levels while monitoring symptoms is key. If swelling persists or worsens, it may indicate that the knee is not ready for the level of activity you are attempting.

5. Long-term Considerations:
You expressed concern about the potential for long-term issues if the cast is removed too early. While it’s important to allow adequate time for healing, prolonged immobilization can also lead to stiffness and muscle atrophy. The goal is to find a balance between protecting the knee and promoting mobility. Regular follow-up with your orthopedic specialist is essential to assess healing and adjust your rehabilitation plan accordingly.

6. Preventing Future Injuries:
Once you are cleared for activity, incorporating strength training, flexibility exercises, and proprioceptive training can help prevent future injuries. Focus on strengthening the muscles around the knee, particularly the quadriceps and hamstrings, as they play a vital role in knee stability.

In conclusion, while your injuries are significant, with proper management and rehabilitation, many individuals can return to their previous levels of activity. It’s crucial to maintain open communication with your healthcare provider, adhere to rehabilitation protocols, and listen to your body as you progress through recovery. If you have any further questions or concerns, don't hesitate to reach out to your healthcare team for guidance.

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