Natural History of Fatty Infiltration and Atrophy of the Supraspinatus Muscle in Rotator Cuff Tears

被引:182
作者
Melis, Barbara [1 ]
DeFranco, Michael J. [2 ]
Chuinard, Christopher [3 ]
Walch, Gilles [1 ]
机构
[1] Ctr Orthoped Santy, Lyon, France
[2] Massachusetts Gen Hosp, Yawkey Ctr Outpatient Care, Harvard Shoulder Serv, Boston, MA 02114 USA
[3] Great Lakes Orthopaed Ctr, Shoulder & Elbow Serv, Traverse City, MI 49684 USA
关键词
REPAIRS; DEGENERATION; INTEGRITY; DIAGNOSIS; MRI;
D O I
10.1007/s11999-009-1207-x
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
In some patients nonoperative treatment of a rotator cuff tear is sufficient, while in others it is only the first stage of treatment prior to surgery. Fatty infiltration progresses throughout the nonoperative treatment although it is not known at what point fatty infiltration contributes to poor functional outcomes, absence of healing, or increased rerupture rates. We therefore identified factors related to the appearance of supraspinatus muscle fatty infiltration, determined the speed of appearance and progression of this phenomenon, and correlated fatty infiltration with muscular atrophy. We retrospectively reviewed 1688 patients with rotator cuff tears and recorded the following: number of tendons torn, etiology of the tear, time between onset of shoulder symptoms and diagnosis of rotator cuff tear. Fatty infiltration of the supraspinatus was graded using either CT or MRI classification. Muscular atrophy was measured indirectly using the tangent sign. Moderate supraspinatus fatty infiltration appeared an average of 3 years after onset of symptoms and severe fatty infiltration at an average of 5 years after the onset of symptoms. A positive tangent sign appeared at an average of 4.5 years after the onset of symptoms. Our results suggest that rotator cuff repair should be performed before the appearance of fatty infiltration (Stage 2) and atrophy (positive tangent sign)-especially when the tear involves multiple tendons. Level IV, prognostic study. See Guidelines for Authors for a complete description of levels of evidence.
引用
收藏
页码:1498 / 1505
页数:8
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