The development and validation of an appraisal method for rotator cuff disorders: the Korean Shoulder Scoring System.
OBJECTIVE
The purpose of this study was to develop and validate a disease-specific appraisal method for patients with rotator cuff disorders. The Korean Shoulder Scoring System (KSS) includes 5 domains totalling 100 points: function, 30 points; pain, 20; satisfaction, 10; range of motion, 20; and muscle power, consisting of strength, 10; and endurance, 10.


METHODS
The KSS was used to evaluate clinical outcomes of 430 patients with rotator cuff disorder for a period of 6 months postoperatively.


RESULTS
The KSS had an acceptable level of internal consistency (alpha = 0.840). The KSS scores also correlated strongly with the Constant scores (r = 0.802), but less so with the American Shoulder and Elbow Surgeons scores (r = 0.602) and the University of California Los Angeles shoulder scores (r = 0.573). A large effect size (r = 1.234) and a standardized response mean (r = 1.317) for KSS were evident at 6 months postoperatively.


CONCLUSIONS
The KSS is a useful measurement tool that combines subjective and objective evaluations for shoulder function related to rotator cuff disorders.
Tae
Suk-Kee
SK
Research Committee of the Korean Shoulder and Elbow Society, Seoul, Korea.
Rhee
Yong-Girl
YG
Park
Tae-Soo
TS
Lee
Kwang-Won
KW
Park
Jin-Young
JY
Choi
Chang-Hyuk
CH
Koh
Sang-Hun
SH
Oh
Joo Han
JH
Kim
Soung-Yon
SY
Shin
Sang-Jin
SJ
D000203:Activities of Daily Living; D000328:Adult; D001182:Arthroscopy / Q000379:methods; D005260:Female; D006801:Humans; D007593:Joint Instability / Q000175:diagnosis*; D007723:Korea; D008297:Male; D008875:Middle Aged; D053580:Muscle Strength / Q000502:physiology; D010147:Pain Measurement; D010808:Physical Examination / Q000379:methods; D011788:Quality of Life; D016059:Range of Motion, Articular / Q000502:physiology*; D015203:Reproducibility of Results; D017006:Rotator Cuff / Q000503:physiopathology*; D012720:Severity of Illness Index; D012785:Shoulder Joint / Q000503:physiopathology; D020069:Shoulder Pain / Q000175:diagnosis* / Q000628:therapy; D012955:Societies, Medical