Is the Supraspinatus Muscle Atrophy Truly Irreversible after Surgical Repair of Rotator Cuff Tears?
Clinics in Orthopedic Surgery
;
: 55-65, 2013.
Article
in English
| WPRIM
| ID: wpr-88117
ABSTRACT
BACKGROUND:
Atrophy of rotator cuff muscles has been considered an irreversible phenomenon. The purpose of this study is to evaluate whether atrophy is truly irreversible after rotator cuff repair.METHODS:
We measured supraspinatus muscle atrophy of 191 patients with full-thickness rotator cuff tears on preoperative magnetic resonance imaging and postoperative multidetector computed tomography images, taken at least 1 year after operation. The occupation ratio was calculated using Photoshop CS3 software. We compared the change between pre- and postoperative occupation ratios after modifying the preoperative occupation ratio. In addition, possible relationship between various clinical factors and the change of atrophy, and between the change of atrophy and cuff integrity after surgical repair were evaluated.RESULTS:
The mean occupation ratio was significantly increased postoperatively from 0.44 +/- 0.17 to 0.52 +/- 0.17 (p < 0.001). Among 191 patients, 81 (42.4%) showed improvement of atrophy (more than a 10% increase in occupation ratio) and 33 (17.3%) worsening (more than a 10% decrease). Various clinical factors such as age tear size, or initial degree of atrophy did not affect the change of atrophy. However, the change of atrophy was related to repair integrity cuff healing failure rate of 48.5% (16 of 33) in worsened atrophy; and 22.2% (18 of 81) in improved atrophy (p = 0.007).CONCLUSIONS:
The supraspinatus muscle atrophy as measured by occupation ratio could be improved postoperatively in case of successful cuff repair.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Tendon Injuries
/
Magnetic Resonance Imaging
/
Muscular Atrophy
/
Retrospective Studies
/
Rotator Cuff
/
Recovery of Function
/
Multidetector Computed Tomography
Type of study:
Observational study
Limits:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
Language:
English
Journal:
Clinics in Orthopedic Surgery
Year:
2013
Type:
Article
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