title: Does the position of shoulder immobilization after reduced anterior glenohumeral dislocation affect coaptation of a Bankart lesion? An arthrographic comparison.
abstract: BACKGROUND
  The position of immobilization after anterior shoulder dislocation has been a controversial topic over the past decade. We compared the effect of post-reduction immobilization, whether external rotation or internal rotation, on coaptation of the torn labrum.
  
  
  METHODS
  Twenty patients aged <40 years with primary anterior shoulder dislocation without associated fractures were randomized to post-reduction external rotation immobilization (nine patients) or internal rotation (11 patients). After 3 weeks, magnetic resonance arthrography was performed. Displacement, separation, and opening angle parameters were assessed and analyzed.
  
  
  RESULTS
  Separation (1.16 ± 1.11 vs 2.43 ± 1.17 mm), displacement (1.73 ± 1.64 vs 2.28 ± 1.36 mm), and opening angle (15.00 ± 15.84 vs 27.86 ± 14.74 °) in the externally rotated group were decreased in comparison to the internally rotated group. A statistically significant difference between groups was seen only for separation (p = 0.028); p values of displacement and opening angle were 0.354 and 0.099, respectively.
  
  
  CONCLUSIONS
  External rotation immobilization after reduction of primary anterior shoulder dislocation could result in a decrease in anterior capsule detachment and labral reduction.
authors.affiliation: Bone and Joint Diseases Research Center, Department of Orthopedic Surgery, Chamran Hospital, Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Omid Reza
authors.initials: OR
authors.lastname: Momenzadeh
authors.affiliation: Department of Orthopedic Surgery, Jahrom University of Medical Sciences, Jahrom, Iran.
authors.forename: Masoome
authors.initials: M
authors.lastname: Pourmokhtari
authors.affiliation: Medical Imaging Research Center, Department of Radiology, Namazi Hospital, Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Sepideh
authors.initials: S
authors.lastname: Sefidbakht
authors.affiliation: Bone and Joint Diseases Research Center, Department of Orthopedic Surgery, Chamran Hospital, Shiraz University of Medical Sciences, Shiraz, Iran. vosoughiar@hotmail.com.
authors.forename: Amir Reza
authors.initials: AR
authors.lastname: Vosoughi
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D007103:Immobilization / Q000379:methods*; D008279:Magnetic Resonance Imaging; D008297:Male; D012399:Rotation; D012783:Shoulder Dislocation / Q000628:therapy*; D016896:Treatment Outcome
keywords: Bankart lesion; Dislocation; External rotation; Shoulder