Knee sprain or strain with inability to fully extend?
Hello doctor, about six days ago I slipped and fell, injuring the inner side of my left knee.
I'm not sure if it's a strain or a sprain.
I can bend it, but I can't fully extend it and I have difficulty walking with my foot flat on the ground.
The inner side of my knee is slightly swollen.
After taking anti-inflammatory medication, I can walk with my foot flat today, but I still can't fully extend it.
Will this condition heal quickly without seeing a doctor? When I try to forcefully extend my knee, I feel a tight, pulling pain on the inner side.
Is this considered serious, or is it normal? Thank you.
Xuanxuan, 20~29 year old female. Ask Date: 2016/04/27
Dr. Shi Guozheng reply Orthopedics
Knee sprains should still be evaluated by a physician, as a simple sprain can sometimes injure the internal structures of the knee, such as the cruciate ligaments or the medial and lateral collateral ligaments.
There is also a possibility of damaging the meniscus.
Reply Date: 2016/04/27
More Info
Knee injuries, particularly strains and sprains, can be quite common after a fall, and understanding the nature of your injury is crucial for recovery. Based on your description, it seems you may have sustained a soft tissue injury, which could involve either a strain (injury to a muscle or tendon) or a sprain (injury to a ligament). Given that you are experiencing swelling, pain, and difficulty in fully extending your knee, it is important to consider a few key points regarding your condition and recovery.
1. Nature of the Injury: The symptoms you describe—pain on the inner side of the knee, swelling, and difficulty in straightening the leg—suggest that you may have injured the medial collateral ligament (MCL), which is located on the inner side of the knee. This ligament helps stabilize the knee and can be sprained during a fall or awkward movement. The fact that you can bend your knee but struggle to straighten it indicates that there may be some inflammation or damage to the ligaments or surrounding structures.
2. Recovery Without Medical Attention: While some mild strains and sprains can heal on their own with rest, ice, compression, and elevation (the RICE method), more severe injuries may require medical evaluation. Since you are still experiencing significant pain and difficulty in extending your knee, it is advisable to seek medical attention. A healthcare professional can perform a physical examination and may recommend imaging studies, such as an MRI, to assess the extent of the injury.
3. Pain and Swelling: The tightness and pain you feel when attempting to straighten your knee could be due to swelling or inflammation in the joint. This is a common response to injury, but if the pain persists or worsens, it could indicate a more serious injury, such as a complete ligament tear or damage to the cartilage. It is not uncommon for individuals to experience some discomfort during the healing process, but severe pain should not be ignored.
4. Timeline for Recovery: The recovery time for knee sprains can vary widely depending on the severity of the injury. Mild sprains may heal within a few days to weeks, while more severe injuries could take several weeks to months. Since you have already experienced six days of symptoms, you should monitor your progress closely. If you do not see improvement in the next few days, or if your symptoms worsen, it is crucial to consult a physician.
5. Self-Care Measures: In the meantime, continue to follow the RICE method: Rest your knee as much as possible, apply ice to reduce swelling, use a compression bandage to support the knee, and elevate your leg to minimize swelling. Over-the-counter pain relievers can help manage pain and inflammation, but be cautious if you have any allergies or contraindications.
6. When to Seek Help: If you experience increased swelling, severe pain, instability in the knee, or if you are unable to bear weight on the leg, you should seek medical attention immediately. These could be signs of a more serious injury that requires intervention.
In summary, while some knee injuries can heal on their own, the symptoms you are experiencing suggest that it would be wise to consult a healthcare professional for a thorough evaluation. Early diagnosis and appropriate treatment can help prevent long-term complications and ensure a smoother recovery process.
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