title: Prospective randomized study of 2 different techniques for endoscopic iliopsoas tendon release in the treatment of internal snapping hip syndrome.
abstract: OBJECTIVE
  To evaluate the short-term results of 2 different techniques of endoscopic iliopsoas tendon release for the treatment of internal snapping hip syndrome.
  
  
  METHODS
  Between January 2005 and January 2007, a consecutive series of patients with the diagnosis of internal snapping hip syndrome was treated with endoscopic release of the iliopsoas tendon. The patients were randomized into 2 different groups. Patients in group 1 were treated with endoscopic iliopsoas tendon release at the lesser trochanter, and patients in group 2 were treated with endoscopic transcapsular psoas release from the peripheral compartment. Hip arthroscopy of both the central and peripheral compartments was performed in both groups using the lateral approach. Associated injuries were identified and treated arthroscopically. Postoperative physical therapy was the same for both series, and each patient received 400 mg of celecoxib daily for 21 days after surgery. Preoperative and postoperative Western Ontario MacMaster (WOMAC) scores and imaging studies were evaluated.
  
  
  RESULTS
  Nineteen patients were included in the study: 10 in group 1 (5 male and 5 female; average age, 29.5 years) and 9 in group 2 (8 female and 1 male; average age, 32.6 years). No statistical difference was found in group composition. Associated injuries were found and treated in 8 patients in group 1 and 7 patients in group 2. No statistical difference was found between groups in preoperative WOMAC scores, and every patient in both groups had an improvement in the WOMAC score. Improvements in WOMAC scores were statistically significant in both groups, and no difference was found in postoperative WOMAC results between groups. No complications were seen.
  
  
  CONCLUSIONS
  Iliopsoas tendon release at the level of the lesser trochanter or at the level of the hip joint using a transcapsular technique is effective and reproducible. We found no clinical difference in the results of both techniques.
authors.affiliation: Adult Joint Reconstruction Service, Hip and Knee, National Rehabilitation Institute of Mexico, Mexico City, Mexico. vichip2002@yahoo.com.mx
authors.forename: Victor M
authors.initials: VM
authors.lastname: Ilizaliturri
authors.forename: Carlos
authors.initials: C
authors.lastname: Chaidez
authors.forename: Patricio
authors.initials: P
authors.lastname: Villegas
authors.forename: Arcadio
authors.initials: A
authors.lastname: Briseño
authors.forename: Javier
authors.initials: J
authors.lastname: Camacho-Galindo
mesh_terms: D000328:Adult; D001182:Arthroscopy / Q000379:methods*; D000068579:Celecoxib; D003131:Combined Modality Therapy; D005260:Female; D006621:Hip Joint / Q000601:surgery*; D006801:Humans; D017746:Joint Capsule / Q000601:surgery; D008297:Male; D011446:Prospective Studies; D011720:Pyrazoles / Q000627:therapeutic use; D012720:Severity of Illness Index; D013449:Sulfonamides / Q000627:therapeutic use; D013577:Syndrome; D053682:Tendon Entrapment / Q000188:drug therapy / Q000503:physiopathology / Q000601:surgery*; D013710:Tendons / Q000601:surgery*; D055815:Young Adult
chemical_list: D011720:Pyrazoles; D013449:Sulfonamides; D000068579:Celecoxib