title: A laboratory comparison of a new arthroscopic transosseous rotator cuff repair to a double row transosseous equivalent rotator cuff repair using suture anchors.
abstract: BACKGROUND
  Because current instrumentation makes it possible to perform an arthroscopic transosseous rotator cuff repair, we performed a biomechanical comparison of a double-row transosseous equivalent rotator cuff repair using suture anchors to an arthroscopic, transosseous rotator cuff repair to determine if they provided similar fixation stability.
  
  
  METHODS
  Six pairs of shoulders were used. One of each pair had a standard double row, transosseous equivalent arthroscopic rotator cuff repair using a suture-bridge technique with suture anchors, and the other had an arthroscopic transosseous repair using an Xbox technique. The repairs were cycled at 150 N for 10,000 cycles with movement of the lateral cuff edge recorded and then tested to failure.
  
  
  RESULTS
  The total cuff edge displacement at 10,000 cycles in the anchor group (transosseous equivalent repair) was 7.9 mm and 6.3 mm for the bone tunnel group (transosseous repair); these were not significantly different (p=0.19). The anchor group failed at an average of 309 N and the bone tunnel group at an average of 339 N (p=0.22).
  
  
  CONCLUSIONS
  Biomechanical testing suggests that arthroscopic, transosseous rotator cuff repair using a Xbox suture configuration is similar in strength and stability to an arthroscopic transosseous equivalent suture-bridge repair. Both techniques demonstrated difficulty in maintaining the lateral position of the tendon.
authors.forename: Frederick J
authors.initials: FJ
authors.lastname: Kummer
authors.forename: Michael
authors.initials: M
authors.lastname: Hahn
authors.forename: Michael
authors.initials: M
authors.lastname: Day
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Meislin
authors.forename: Laith M
authors.initials: LM
authors.lastname: Jazrawi
mesh_terms: D000328:Adult; D000368:Aged; D001182:Arthroscopy / Q000295:instrumentation* / Q000379:methods*; D001696:Biomechanical Phenomena; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017006:Rotator Cuff / Q000502:physiology / Q000601:surgery*; D053441:Suture Anchors; D013536:Suture Techniques / Q000295:instrumentation*; D013537:Sutures; D014945:Wound Healing; D055815:Young Adult