title: The effect of coracoacromial ligament excision and acromioplasty on superior and anterosuperior glenohumeral stability.
abstract: OBJECTIVE
  To determine the effect of coracoacromial ligament (CAL) resection and subacromial decompression (SAD)/acromioplasty on humeral head translation under anterosuperior and superior loading in a cadaveric model with an intact rotator cuff.
  
  
  METHODS
  Six cadaveric shoulders were tested in the intact state, following CAL resection and following SAD.
  
  
  RESULTS
  Excision of the CAL led to a significant increase in anterosuperior humeral translation of 2.1 mm (17%). SAD led to a significant increase in superior humeral translation of 2.5 mm (28%).
  
  
  CONCLUSIONS
  The results of this cadaveric study showed that resection of the CAL led to a 2.1-mm increase in anterosuperior translation and that SAD led to a 2.5-mm increase in superior translation.
  
  
  CONCLUSIONS
  CAL resection and SAD are common surgical procedures, which may lead to increases in anterosuperior and superior glenohumeral instability.
authors.affiliation: National Cheng Kung University Hospital, Tainan, Taiwan.
authors.forename: Wei-Ren
authors.initials: WR
authors.lastname: Su
authors.forename: Jeffrey E
authors.initials: JE
authors.lastname: Budoff
authors.forename: Zong-Ping
authors.initials: ZP
authors.lastname: Luo
mesh_terms: D000174:Acromion / Q000601:surgery*; D000368:Aged; D000369:Aged, 80 and over; D002102:Cadaver; D006801:Humans; D008023:Ligaments, Articular / Q000601:surgery*; D008875:Middle Aged; D019637:Orthopedic Procedures / Q000379:methods*; D019651:Plastic Surgery Procedures / Q000379:methods*; D012783:Shoulder Dislocation / Q000503:physiopathology / Q000601:surgery*; D013536:Suture Techniques / Q000295:instrumentation