Why does a meniscus injury cause leg weakness when walking?
Disease description:
Recently, I have often experienced leg weakness while walking, and later found out it was caused by a meniscus injury. Why does a meniscus injury cause leg weakness during walking?
Doctor's answer (1)
Dr. Xu Shuai
The main reasons for leg weakness while walking after meniscus injury are as follows:
1. Poor local blood circulation: Meniscus injury can cause knee joint pain, thereby affecting local blood circulation and making the patient feel leg weakness.
2. Severe injury: In cases of severe meniscus damage, patients may experience significant pain and swelling, leading to weak muscle contractions around the knee joint and resulting in leg weakness.
3. Decreased joint stability: After the injury, impaired meniscus function leads to reduced joint stability. When joint loading increases, it can easily trigger symptoms of leg weakness.
4. Excessive fatigue: If the patient does not get sufficient rest after the injury and continues weight-bearing activities, excessive fatigue may lead to excessive anaerobic respiration in the muscles, causing lactic acid accumulation and resulting in leg weakness.
