J Korean Orthop Assoc.  2009 Oct;44(5):556-564. 10.4055/jkoa.2009.44.5.556.

Analysis of the Change in Fatty Degeneration of the Rotator Cuff and Its Influence on the Outcome of Rotator Cuff Repair

Affiliations
  • 1Department of Orthopedic Surgery, Asan Medical Center, Ulsan University College of Medicine, Seoul, Korea. jbpark2@gmail.com

Abstract

PURPOSE
To analyze the changes in fatty degeneration of the rotator cuff after its repair as well as the effect of fatty degeneration on the functional and anatomical outcomes. MATERIALS AND METHODS: The medical records of 107 patients (mean age=58.7 years), who had undergone a repair of rotator cuff tears, were reviewed. The mean follow-up period was 16 months. The following parameters were evaluated: the functional outcomes, including the American shoulder and elbow surgeons (ASES) score, Constant score and muscle power; preoperative and postoperative fatty degeneration of the rotator cuffs, including supraspinatus, infraspinatus and subscapularis; and the cuff integrity. RESULTS: Both the ASES and Constant scores were improved significantly postoperatively. The re-tear rate was 19.6%. The overall rate of satisfactory results was 88.8%. Fatty degeneration progressed in 25 cases (22.4%) and regressed in three (2.8%). More progression was observed in older (p=0.016) and re-tear (p=0.011) patients. The ASES score had a significant relationship with the preoperative fatty degeneration of the supraspinatus and the infraspinatus, whereas the Constant score was associated with the fatty degeneration of all three muscles. CONCLUSION: Greater progression of fatty degeneration was observed in older and re-tear patients. The functional outcomes were better in the less severe fatty degeneration group.

Keyword

Rotator cuff tear; Fatty degeneration; Repair of rotator cuff

MeSH Terms

Elbow
Follow-Up Studies
Humans
Medical Records
Muscles
Rotator Cuff
Shoulder

Figure

  • Fig. 1 Regressed fatty degeneration of the infraspinatus in 63-years old woman. (A) Preoperative oblique sagittal image shows grade 2 fatty degeneration in the upper part of the infraspinatus with mild muscle atrophy. (B) Postoperative image shows regression to grade 1.


Cited by  1 articles

Follow-up Results in Patient with the Progressive Fatty Degeneration of the Rotator Cuff
Jae-Bum Park, Hong Jun Jung, Tae Soo Ahn, Jae Myeung Chun
J Korean Orthop Assoc. 2011;46(1):28-34.    doi: 10.4055/jkoa.2011.46.1.28.


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