title: Comparative analysis of single-row versus double-row repair of rotator cuff tears.
abstract: OBJECTIVE
  Our goal in this analysis was to compare clinical outcomes and radiographic healing rates of double-row (DR) transosseous-equivalent versus single-row (SR) Mason-Allen configuration (MAC) arthroscopic repair techniques.
  
  
  METHODS
  A prospective, nonrandomized assessment of 132 arthroscopic rotator cuff repair patients included 78 SR repair patients and 54 with DR repair. Tears measured between 1.5 and 4.5 cm. Patients were evaluated with a visual analog scale; University of California, Los Angeles score; American Shoulder and Elbow Surgeons score; active range of motion; and dynamometric strength. Scores and measurements were obtained preoperatively and at 3, 6, 12, and 24 months postoperatively. The SR repairs were performed with the arthroscopic MAC. For DR repairs, two 5.5-mm fully threaded Bio-Corkscrew anchors (Arthrex, Naples, FL), single loaded with FiberWire (Arthrex), were used for the medial row. The lateral row was secured with PushLock bioabsorbable anchors (Arthrex). Forty-four patients in the SR group and 37 patients in the DR group returned for magnetic resonance imaging (MRI) evaluation of repair integrity between 12 and 28 months postoperatively.
  
  
  RESULTS
  DR repairs resulted in higher outcome scores, though not significantly. Patient satisfaction rates were 95% in the SR group and 92% in the DR group. MRI showed a statistically significantly improved healing rate with SR repair compared with DR repair in our entire patient population (P ≤ .017). A more homogeneous subset of patients with tears between 2.5 and 3.5 cm showed a significantly improved healing rate for the DR repair (P ≤ .03).
  
  
  CONCLUSIONS
  Our short-term results suggest that SR MAC repair provides comparable clinical results to DR repair. Although our MRI data suggest improved healing rates in our SR repairs in the entire patient population, when similar-sized tears were compared, the DR repair group showed improved radiographic healing.
  
  
  METHODS
  Level III, retrospective comparative study.
authors.affiliation: The Orthopedic Institute of Wisconsin, Midwest Orthopedic Specialty Hospital, 3111 W Rawson Ave., Franklin, WI 53132, U.S.A. WPennington@theorthoinstitute.com
authors.forename: William T
authors.initials: WT
authors.lastname: Pennington
authors.forename: David J
authors.initials: DJ
authors.lastname: Gibbons
authors.forename: Brian A
authors.initials: BA
authors.lastname: Bartz
authors.forename: Maggie
authors.initials: M
authors.lastname: Dodd
authors.forename: James
authors.initials: J
authors.lastname: Daun
authors.forename: Jonathan
authors.initials: J
authors.lastname: Klinger
authors.forename: Milodrag
authors.initials: M
authors.lastname: Popovich
authors.forename: Brian
authors.initials: B
authors.lastname: Butler
mesh_terms: D000328:Adult; D001182:Arthroscopy / Q000379:methods*; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015601:Injury Severity Score; D022125:Lacerations / Q000601:surgery*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement; D016059:Range of Motion, Articular / Q000502:physiology*; D019651:Plastic Surgery Procedures / Q000295:instrumentation / Q000379:methods; D020127:Recovery of Function; D012189:Retrospective Studies; D017006:Rotator Cuff / Q000601:surgery*; D000070636:Rotator Cuff Injuries; D012785:Shoulder Joint / Q000503:physiopathology / Q000601:surgery; D053441:Suture Anchors; D013536:Suture Techniques; D013718:Tensile Strength; D016896:Treatment Outcome