Meniscus Tears and ACL Reconstruction: What You Need to Know - Orthopedics

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Questions regarding the meniscus and posterior cruciate ligament?


Hello Doctor: About ten years ago, I had a car accident that resulted in a fracture of the patella in my right knee.
It wasn't until last year, after I twisted my knee while playing basketball and underwent an MRI, that I discovered I had a torn posterior cruciate ligament (PCL) and a meniscus tear.
Regarding the meniscus tear, some doctors have suggested surgery for repair or removal to prevent further damage, while others believe the meniscus has become "locked" in a position that does not affect my walking, so surgery is unnecessary.
I would like to ask the doctor if a meniscus tear that does not significantly impact walking requires surgery.
Additionally, I have heard that PCL reconstruction is not recommended due to poor outcomes, and that it is better to focus on strengthening the quadriceps.
However, I am still relatively young and hope to return to light activities such as walking and hiking.
If I only focus on muscle strengthening, I am concerned about the stability of my knee leading to cartilage wear, as well as the risk of muscle loss as I age.
Should I still consider reconstruction? Is the outcome of reconstruction really that poor? Thank you, Doctor, for clarifying these concerns.

Xiao Lin, 30~39 year old female. Ask Date: 2021/12/01

Dr. Shi Guozheng reply Orthopedics


If the meniscus does not cause the joint to lock, surgery for ligament reconstruction may not be necessary.
You can consult with a sports medicine specialist at a medical center to inquire about the current surgical techniques and their effectiveness.
It would be clearer to ask them directly.

Reply Date: 2021/12/01

More Info


Understanding meniscus tears and ACL (anterior cruciate ligament) reconstruction is crucial for anyone who has experienced knee injuries, especially athletes or active individuals. Your situation, involving a history of knee trauma and recent findings of a torn ACL and meniscus, is not uncommon.
Firstly, let's discuss the meniscus. The meniscus is a C-shaped cartilage in the knee that acts as a cushion between the femur (thigh bone) and tibia (shin bone). A meniscus tear can occur due to acute injury, such as twisting the knee while playing sports, or from degeneration over time, especially in individuals with a history of knee injuries. When a meniscus tear is identified, the treatment approach often depends on the severity of the tear, the patient's age, activity level, and whether the tear is causing symptoms.

In your case, if the meniscus tear is not causing significant pain or instability and does not interfere with your daily activities, some physicians may recommend a conservative approach, which could include physical therapy and strengthening exercises. This is particularly true if the tear is in a location that is less likely to heal or cause further issues, often referred to as a "stable" tear. However, if the tear is causing locking, catching, or significant pain, surgical intervention may be warranted to repair or remove the damaged portion of the meniscus.

Regarding the ACL, it is important to understand its role in knee stability. The ACL helps prevent the tibia from sliding too far forward relative to the femur and provides rotational stability to the knee. A torn ACL can lead to instability, especially during activities that involve pivoting or sudden changes in direction. While some individuals, particularly those who are less active, may manage without surgical reconstruction, athletes or those wishing to return to sports often benefit from ACL reconstruction.

You mentioned that some doctors advised against ACL reconstruction due to perceived poor outcomes, suggesting that strengthening the quadriceps might be a better approach. While strengthening the muscles around the knee is indeed beneficial and can help provide some stability, it may not fully compensate for the lack of an intact ACL, especially if you plan to engage in activities that put stress on the knee.
The decision to undergo ACL reconstruction should consider your activity goals. If your aim is to return to sports or activities that involve running, jumping, or pivoting, reconstruction may be advisable to restore stability and prevent further damage to the knee joint, including the cartilage.
It's also worth noting that while outcomes can vary, many studies show that ACL reconstruction can lead to significant improvements in knee stability and function, allowing individuals to return to their desired level of activity. The key is to have a thorough discussion with an orthopedic surgeon who specializes in sports medicine. They can provide insights based on your specific injury, activity level, and overall health.

In summary, if your meniscus tear is not causing significant issues, conservative management may be appropriate. However, if you wish to return to more demanding activities, considering ACL reconstruction could be beneficial. Always consult with a healthcare professional who can evaluate your knee and help you make an informed decision based on your personal goals and lifestyle.

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