Knee Pain and Stiffness After Car Accident: Recovery Insights - Orthopedics

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Knee unable to bend and weakness after stitches from a car accident?


Hello Doctor, I was in a car accident on July 2nd where my right knee struck the back of a truck, resulting in stitches on my knee.
At that time, I was still able to walk properly.
After the stitches, I was afraid the wound would reopen, so I tried to keep my leg straight.
A day later, I noticed I couldn't bend my knee and it felt tight.
My knee is swollen, and the area around the wound feels numb and soft.
I had an X-ray, and there were no fractures.
Today is the 10th day post-surgery, and the doctor forcibly bent my leg down to a 90-degree angle.
It was very tight and painful, but afterwards, I was able to bend it a bit more, although it still feels tight and painful.
Given this situation, do you think there might be an issue with my anterior cruciate ligament, or do I just need to do more rehabilitation? Right now, I cannot lift my right leg while lying flat.
Thank you, Doctor.

Xuan, 10~19 year old female. Ask Date: 2017/07/12

Dr. Shi Guozheng reply Orthopedics


If the swelling in the knee joint has subsided, you can apply heat and then gradually practice bending it.
Improvement should be expected in about a few weeks.

Reply Date: 2017/07/12

More Info


After a car accident, experiencing knee pain and stiffness is a common issue, especially when there has been a direct impact to the knee, as in your case. The symptoms you describe—difficulty bending the knee, swelling, and a sensation of tightness—are indicative of potential soft tissue injury, which may include damage to ligaments, tendons, or muscles surrounding the knee joint.

Given that you had stitches on your knee and have undergone an X-ray that showed no fractures, it is likely that your pain and stiffness are due to soft tissue injuries rather than a bony injury. The tightness and pain you feel when trying to bend your knee could be attributed to swelling and inflammation in the joint, which is common after such injuries. The fact that your doctor was able to bend your knee to 90 degrees, albeit painfully, suggests that there is some range of motion, but it is limited due to the pain and swelling.

In terms of recovery, it is essential to focus on rehabilitation. Here are some insights and recommendations based on your situation:
1. Physical Therapy: Engaging in physical therapy is crucial for regaining strength and flexibility in your knee. A physical therapist can provide you with a tailored rehabilitation program that includes exercises to improve range of motion, strengthen the muscles around the knee, and reduce swelling. They may use modalities such as ice, heat, ultrasound, or electrical stimulation to help manage pain and inflammation.

2. Gentle Range of Motion Exercises: Start with gentle range of motion exercises as tolerated. This can include passive movements where someone else helps you move your knee, or active movements where you try to bend and straighten your knee on your own. The goal is to gradually increase your range of motion without causing excessive pain.

3. Strengthening Exercises: Once you have regained some range of motion, your therapist will likely introduce strengthening exercises. Focus on the quadriceps and hamstring muscles, as these are critical for knee stability and function. Exercises like straight leg raises, heel slides, and gentle squats can be beneficial.

4. Ice and Elevation: To manage swelling, continue to apply ice to your knee for 15-20 minutes several times a day, especially after exercises. Elevating your leg can also help reduce swelling.

5. Gradual Return to Activities: As your knee improves, gradually return to your normal activities. Avoid high-impact activities until you have regained sufficient strength and flexibility. Listen to your body and avoid pushing through pain.

6. Follow-Up with Your Doctor: Since you are concerned about potential ligament injuries, it may be beneficial to follow up with your orthopedic doctor. They might recommend an MRI if there is suspicion of a ligament tear, such as an ACL injury, especially if your symptoms do not improve with conservative management.

7. Patience and Consistency: Recovery from soft tissue injuries can take time. It is essential to be patient and consistent with your rehabilitation efforts. Regular follow-ups with your healthcare provider will help monitor your progress and adjust your treatment plan as needed.

In summary, while your symptoms are concerning, they are not uncommon after a knee injury from a car accident. Engaging in a structured rehabilitation program under the guidance of a physical therapist, managing swelling, and maintaining communication with your healthcare provider will be key to your recovery. If you experience any worsening symptoms, such as increased pain, instability, or inability to bear weight on the knee, seek medical attention promptly.

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