Comparison of subjective and objective outcomes after rotator cuff repair.
OBJECTIVE
To determine whether subjective (pain by visual analog scale) or objective (strength by dynamometer) measures correlate with disease-specific measures and quality-of-life metrics in arthroscopic rotator cuff repair.


METHODS
The study population included patients who underwent primary arthroscopic rotator cuff repair at a single institution between 2006 and 2009. Within these parameters, data from 166 patients was obtained. Data were collected prospectively and reviewed retrospectively. Preoperative and 1-year postoperative data were compared. Correlation was determined in (1) disease-specific metrics including American Shoulder and Elbow Surgeons (ASES) score, Constant score (CS), and Simple Shoulder Test (SST) score and (2) quality of life measured by the Short Form 12.


RESULTS
Preoperative strength and pain are closely associated with postoperative changes (P < 1 × 10(-5), with β coefficients of 0.8 to 1.0). Change in ASES score was most closely associated with change in pain and change in CS with change in strength (R(2) = 0.82 and R(2) = 0.54, respectively). Only the SST score was found to be statistically linked to changes in both strength and pain (P < .05).


CONCLUSIONS
Patients, despite sex and age, with good preoperative strength and high preoperative pain will benefit most from arthroscopic rotator cuff repair. The CS best captures changes in strength, and the ASES score best captures changes in pain. Only changes in the SST score show a statistically significant link with changes in both strength and pain.


METHODS
Level IV.
Division of Sports Medicine, Department of Orthopaedic Surgery, Duke University Medical Center, Durham, North Carolina, U.S.A.
Vasili
V
Karas
Kristen
K
Hussey
Anthony R
AR
Romeo
Nikhil
N
Verma
Brian J
BJ
Cole
Richard C
RC
Mather
D000328:Adult; D000368:Aged; D018771:Arthralgia / Q000175:diagnosis* / Q000517:prevention & control*; D001182:Arthroscopy / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D053580:Muscle Strength; D053581:Muscle Strength Dynamometer; D010147:Pain Measurement; D011788:Quality of Life; D020127:Recovery of Function; D015203:Reproducibility of Results; D012189:Retrospective Studies; D017006:Rotator Cuff / Q000601:surgery*; D000070636:Rotator Cuff Injuries; D016896:Treatment Outcome; D055815:Young Adult