Peri-articular diseases of the hip: emerging frontiers in arthroscopic and endoscopic treatments

Journal of Orthopaedics and Traumatology

Official Journal of the Italian Society of Orthopaedics and Traumatology

Table 4 Literature reports on treatments for piriformis syndrome

First author	References	Procedure	Number of hips	Follow-up	Results and complications
Benson	[47]	Open excision of post-traumatic adhesions	16	38 months	Eleven excellent and four good results, one seroma and one infected hematoma
Fishman	[48]	Open nerve decompression	43	16 months	68.8 % patients showed 50 % or greater improvement; mean improvement was 68 %
Filler	[49]	Open nerve decompression (3 cm incision, transgluteal approach)	62	Unstated	Excellent outcome in 58.5 %, good outcome in 22.6 %, limited benefit in 13.2 %, no benefit in 3.8 %, and worsened symptoms in 1.9 %
Martin	[50]	Endoscopic nerve decompression, piriformis tendon release or by hamstring tendon scarring	35	1 year	The mean postoperative MHHS increased to 78.0 and VAS score decreased to 2.4. The mean postoperative MHHS increased to 78.0 and VAS score decreased to 2.4
Dezawa	[51]	Endoscopic release of the piriformis muscle under local anesthesia	8	Unstated	Good results in all patients
Hwang	[52]	Endoscopic incision, drainage of benign cystic lesion on the sciatic nerve and release of the piriformis tendon	1	20 months	Good result, no recurrence