Left Knee Pain: Causes and Treatment Options

There is some pain in the left knee, accompanied by a feeling of it being locked?

Hello doctor, about ten years ago, I sustained a bruise on my left knee from a car accident, but examinations showed no abnormalities.
After the wound healed, I occasionally felt coldness in my left knee and it seemed to be weaker.
During winter, I sometimes experienced a sensation of a tendon getting stuck.
The aforementioned symptoms had not occurred for several years, but recently, while sitting, I have been feeling a creaking sensation in my left knee, and when I squat, I hear a popping sound.

A, 20~29 year old female. Ask Date: 2020/02/02

Dr. Cai Shanglin reply Orthopedics

It is recommended to undergo an ultrasound examination at a hospital or clinic.

Reply Date: 2020/02/02

More Info

Understanding left knee pain can be complex, especially when it has a history of trauma, such as your past car accident. The symptoms you describe—occasional feelings of coldness, weakness, and the sensation of a tendon or ligament catching—are indicative of several potential underlying issues.

Possible Causes of Left Knee Pain
1. Post-Traumatic Changes: After a significant injury like a car accident, even if initial X-rays and examinations show no abnormalities, there can be long-term changes in the knee joint. These may include:
- Cartilage Damage: The cartilage can become frayed or damaged, leading to pain and the sensation of catching or popping.

- Meniscal Injury: The meniscus, a C-shaped cartilage in the knee, can be torn during trauma. This can lead to symptoms like locking or catching sensations.

- Ligament Strain: Ligaments may have been stretched or partially torn, which can lead to instability and feelings of weakness.

2. Osteoarthritis: Over time, previous injuries can lead to degenerative changes in the knee joint, known as osteoarthritis. This condition can cause stiffness, pain, and a grinding sensation during movement.

3. Patellofemoral Pain Syndrome: This condition arises from issues with the kneecap (patella) and can cause pain around the kneecap, especially when sitting for long periods or going up and down stairs.

4. Tendinitis: Inflammation of the tendons around the knee can also cause pain and a sensation of tightness or catching.

Treatment Options
1. Physical Therapy: Engaging in a structured physical therapy program can help strengthen the muscles around the knee, improve flexibility, and reduce pain. A physical therapist can provide exercises tailored to your specific needs.

2. Medication: Non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen can help manage pain and inflammation. However, long-term use should be monitored by a healthcare provider due to potential side effects on the stomach and kidneys.

3. Injections: Corticosteroid injections can provide temporary relief from inflammation and pain. Hyaluronic acid injections may also be considered for osteoarthritis to improve lubrication in the joint.

4. Activity Modification: Reducing activities that exacerbate your knee pain, such as squatting or high-impact sports, can help manage symptoms. Incorporating low-impact exercises like swimming or cycling can maintain fitness without stressing the knee.

5. Surgical Options: If conservative treatments fail and the pain significantly impacts your quality of life, surgical options may be considered. This could include arthroscopy to repair damaged cartilage or meniscus, or even knee replacement in severe cases of osteoarthritis.

Conclusion
Given your history of knee pain and the recent symptoms, it is crucial to consult with an orthopedic specialist for a thorough evaluation. They may recommend imaging studies, such as an MRI, to assess soft tissue structures that X-rays might not reveal. Understanding the exact cause of your knee pain will guide appropriate treatment and help you regain function and reduce discomfort. Always remember that early intervention can lead to better outcomes, so seeking professional advice is essential.

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