The posterior cruciate ligament (PCL) is one of four major ligaments in the knee, running along the back of the joint. It prevents the shin bone (tibia) from sliding backward relative to the thigh bone (femur), and plays a crucial role in overall knee stability. While PCL injuries are less common than ACL tears, they can be just as disabling if not properly diagnosed and treated.
Dr. Joe Cooper, a board-certified and fellowship-trained orthopedic surgeon serving Beverly Hills, Los Angeles, and Brentwood, has extensive experience managing PCL injuries — from mild sprains to complex multi-ligament knee trauma.
How PCL Injuries Occur
PCL tears typically result from a direct blow to the front of the knee when the knee is bent — a mechanism commonly seen in:
- Dashboard injuries during motor vehicle accidents (the most common cause)
- Contact sports such as football or rugby, when a player falls on a bent knee
- Hyperextension injuries during athletic activity
- Falls onto a bent knee
Symptoms of a PCL Tear
- Pain and swelling in the back of the knee shortly after injury
- Stiffness and difficulty walking or bending the knee
- A feeling of instability or the knee feeling "loose"
- Difficulty going down stairs or hills
- In severe cases, visible posterior displacement of the tibia
Grading PCL Injuries
PCL injuries are classified by severity:
- Grade I (mild sprain): The ligament is stretched but intact. The knee remains stable.
- Grade II (partial tear): The PCL is partially torn. Some instability may be present.
- Grade III (complete tear): The PCL is completely torn. Significant instability is present, often with associated ligament injuries.
Diagnosis
Dr. Cooper performs a detailed physical examination including posterior drawer testing and orders MRI imaging to confirm the PCL tear, assess its severity, and identify any associated injuries to the ACL, meniscus, or posterolateral corner — which frequently occur alongside PCL tears.
Treatment Options
Treatment depends on the grade of injury and the presence of associated ligament damage:
- Conservative management (Grade I and II): Most isolated PCL injuries respond well to non-surgical treatment, including bracing, physical therapy focused on quadriceps strengthening, and activity modification. Many patients return to full activity without surgery.
- PCL reconstruction (Grade III and multi-ligament injuries): Surgical reconstruction using a graft is recommended for complete tears with instability, especially in athletes or patients with multi-ligament involvement. Dr. Cooper uses minimally invasive arthroscopic techniques to restore stability and function.
Expert Knee Care in Los Angeles
If you've sustained a knee injury and are experiencing instability or posterior knee pain, don't wait for a proper evaluation. Contact Dr. Cooper's office in Beverly Hills or Brentwood to schedule your consultation.
