The piriformis syndrome consists of contracture or spasm of this muscle in the area of the hip, usually on one side, although it can also be bilateral.
It is caused by the injury of the piriformis muscle, which can occur due to excessive use of the same, for example by sitting for prolonged periods, exercising too much, running, walking or doing other repetitive activities, playing sports, climbing stairs, lifting heavy objects, traffic accidents, falls, sudden turns of the hip and/or penetrating injuries.
The main symptom is sciatica (pain in the territory of the path of the sciatic nerve). Other symptoms include sensitivity or brief pain in the buttocks, numbness or tingling in the buttocks along the back of the leg, difficulty sitting down, pain when sitting that gets worse if you remain seated, pain that gets worse with activity and pain in the lower part of the body that is so intense that it leaves the person incapacitated.
The diagnosis is made through clinical questioning, physical examination and imaging tests such as MRI or CT scan to rule out other causes.
The treatment is based on the control of symptoms through postural control, anti-inflammatory drugs, muscle relaxants, electrotherapy and, as a last resort, surgical intervention.
- Rob Johnson, MD. Approach to hip and groin pain in the athlete and active adult. Uptodate. Jul 06, 2017.
- Lisa R Callahan, MD. Overview of running injuries of the lower extremity. Uptodate. Jun 13, 2017.
- Roger Chou, MD. Subacute and chronic low back pain: Nonsurgical interventional treatment. Uptodate. Jun 21, 2017.
- Rankin AT, Bleakley CM, Cullen M. Hip Joint Pathology as a Leading Cause of Groin Pain in the Sporting Population: A 6-Year Review of 894 Cases. Am J Sports Med 2015; 43:1698.
- Agten CA, Sutter R, Buck FM, Pfirrmann CW. Hip Imaging in Athletes: Sports Imaging Series. Radiology 2016; 280:351.

