AAOS: Long-lasting Results Seen with Acromioplasty for Impingement Syndrome
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AAOS: Long-lasting Results Seen with Acromioplasty for Impingement Syndrome

By Jill Stein

SAN FRANCISCO, CA -- March 15, 2004 -- Open anterior acromioplasty for impingement syndrome produces long-lasting relief and improved function, investigators stated today here at the 2004 Annual Meeting of the American Academy of Orthopedic Surgeons.

Robert Cofield, MD, Mayo Clinic, Rochester, Minnesota, United States, reported results in 35 patients with 36 involved shoulders. The patients were followed for at least 21 years.

Open anterior acromioplasty has been widely used to treat subacromial impingement with or without a rotator-cuff tear. There is little information on long-term results, however, despite the procedure's popularity since it was initially described in 1972.

The mean age of the study population at the time of surgery was 46 years; the mean age at the time of follow-up was 70 years.

All patients in the study completed the Mayo Patient Shoulder Questionnaire, and their clinical charts were reviewed.

At the latest follow-up, the mean active elevation was 168 degrees in the operated side versus 171 degrees in the non-operated side (P = .60). Overall, 97% of patients reported active elevation from 120 to 180 degrees on the operated shoulder.

The mean external rotation was 70.3 degrees on the operated side and 69.3 degrees in the non-operated side (P = .87).

Sixty percent of patients reported external rotation from 60 to 120 degrees on the operated shoulder.

Results also revealed that the average pre-operative satisfaction was 2.3 on a scale where a score of 1 indicated poor satisfaction and a score of 10 denoted excellent satisfaction. The satisfaction score increased to 7.0 postoperatively (P = .0001).

The mean simple shoulder test score (SST) was 8.9 on the operated side and 9.2 on the non-operated side (P = .47). The mean American Shoulder and Elbow Surgeons (ASES) score was 74.7 on the operated side compared with 83.3 on the non-operated side (P = .02).

A detailed analysis of ASES functional scores showed that 32% of patients still found that washing their backs or putting on a bra were the most difficult tasks to perform; 35% felt that throwing overhead was the most difficult task to perform. Ninety percent of patients said they had no or only mild difficulty sleeping on the operated shoulder.

Open anterior acromioplasty was associated with a low rate of reoperation.

"Overall, the data suggest that the results of open acromioplasty for impingement syndrome are maintained for up to 20 years," Dr. Cofield noted.

Dr. Cofield added that, to his knowledge, this study is the longest follow-up of open acromioplasty to date.

[Study Title. Minimum Twenty-One Year Follow-up of Open Anterior Acromioplasty for Impingement Syndrome. Abstract 212]

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