Piriformis syndrome is a neuromuscular disorder caused by the piriformis muscle compressing the sciatic nerve, leading to tingling, pain, and numbness in the hip, leg, lower back, and feet.
The piriformis is a deep gluteal muscle that extends from the lower spine to the hip and the top of the thigh. Located on both sides of the body, this muscle assists in all movements of the lower body. The sciatic nerve, starting from the spinal cord, passes beneath the piriformis muscle and extends from the hip down the back of each leg to the feet. It is one of the longest and largest nerves in the body.
Piriformis syndrome is primarily divided into two types:
1. Primary Piriformis Syndrome: This type is generally associated with anatomical variations. It occurs when the sciatic nerve is compressed due to differences in the natural structure of the piriformis muscle or the sciatic nerve itself.
2. Secondary Piriformis Syndrome: This type results from damage to the piriformis muscle due to external factors such as trauma (injury), overuse, muscle spasms, or other conditions. It is typically triggered by lifestyle factors or external influences.