Posterior Cruciate Ligament Injuries: Treatment Options and Recovery - Orthopedics

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Posterior cruciate ligament (PCL)


Hello Doctor, I was in a car accident at the end of March and suffered an open comminuted fracture of my lower leg.
After the swelling subsided post-surgery, I noticed a significant indentation in my lower leg when bending my knee.
The doctor assessed that there might be damage to the posterior cruciate ligament (PCL) and advised me to wear a brace to stabilize the knee at a flexion angle of 30 degrees.
Recently, an MRI confirmed a complete tear of the PCL and the presence of joint effusion.
I have heard that the surgery is complex, and some have suggested conservative treatment.
If I opt for non-surgical treatment, is there a possibility for the completely torn ligament to heal on its own? Or is this approach solely reliant on muscle strength for support? Thank you.

Yongluren, 30~39 year old female. Ask Date: 2023/07/03

Dr. Shi Guozheng reply Orthopedics


A complete tear of the posterior cruciate ligament (PCL) cannot heal on its own.
Strengthening exercises can help reduce some instability, but surgical intervention is often necessary and should be evaluated by a physician.

Reply Date: 2023/07/03

More Info


Posterior cruciate ligament (PCL) injuries can be quite complex, especially following a traumatic event like a car accident. In your case, the diagnosis of a complete PCL tear, along with the presence of joint effusion, indicates that the injury is significant and requires careful consideration for treatment options.


Understanding PCL Injuries
The PCL is one of the key ligaments in the knee, responsible for stabilizing the joint by preventing the tibia (shinbone) from sliding backward relative to the femur (thighbone). A complete tear of the PCL can lead to instability in the knee, particularly during activities that involve bending or pivoting.


Treatment Options
1. Surgical Treatment:
- Indications: Surgery is often recommended for athletes or individuals who engage in activities that require a stable knee. If the PCL is completely torn and there is significant instability, surgical reconstruction may be necessary.

- Procedure: The surgery typically involves reconstructing the ligament using a graft, which can be taken from the patient’s own tissue (autograft) or from a donor (allograft). Post-surgery, a rehabilitation program is crucial for recovery.

2. Conservative (Non-Surgical) Treatment:
- Indications: Non-surgical treatment may be appropriate for individuals who are less active or have a lower demand for knee stability. This approach is often considered if there is no significant instability or if the patient prefers to avoid surgery.

- Methods: Conservative management includes physical therapy focused on strengthening the muscles around the knee, particularly the quadriceps and hamstrings, to provide support to the joint. Bracing may also be used to stabilize the knee during recovery.

- Recovery: While the PCL itself does not typically heal completely on its own, strengthening the surrounding muscles can help compensate for the ligament's deficiency. However, it is important to note that this approach may not restore full stability, and some individuals may continue to experience knee instability or pain.


Recovery Considerations
- Physical Therapy: Regardless of the treatment option chosen, physical therapy is essential. A tailored rehabilitation program can help improve range of motion, strength, and overall function of the knee. Your therapist will likely focus on exercises that promote stability and strength without overloading the knee.


- Activity Modification: During the recovery phase, it’s crucial to modify activities to avoid exacerbating the injury. High-impact activities or sports that involve cutting or pivoting should be avoided until you have fully recovered.

- Monitoring Symptoms: Keep track of any swelling, pain, or instability in the knee. If symptoms worsen or if you experience significant discomfort, it’s important to consult your healthcare provider for further evaluation.


Conclusion
In summary, the decision between surgical and conservative treatment for a complete PCL tear should be made based on your activity level, the degree of knee instability, and your personal preferences. While non-surgical treatment can help manage symptoms and improve function, it may not restore the knee to its pre-injury state. Consulting with an orthopedic specialist who can evaluate your specific situation and provide personalized recommendations is crucial. They can help you weigh the risks and benefits of each approach and guide you through the recovery process. Remember, the goal is to return to your desired level of activity while ensuring the long-term health of your knee.

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