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OPERATIVE TREATMENT OF SUBACROMIAL IMPINGEMENT AND ROTATOR CUFF TEAR OF THE SHOULDER: OUTCOME COMPARISON BETWEEN OUTPATIENT AND HOSPITALIZED PATIENTS



Abstract

Introduction: Shoulder pain, caused by subacromial impingement or rotator cuff tear, is common for the middle-aged and elderly people. It can cause diminished ability to work and prolonged sick-leaves. The purpose of this study was to evaluate the effect of the operative treatment of this pain (arthroscopic subacromial decompression, rotator cuff repair) when the patients returned home the same day (outpatient) from the day-surgery unit or stayed 1–3 nights at the ward (hospitalized).

Methods: Ninety-three patients were included in this prospective, comparative study. The inclusion criteria were:

  1. 1) shoulder pain more than 6 months with no response for conservative treatment,

  2. 2) no previous shoulder surgery of the same shoulder or surgery of the contralateral shoulder,

  3. 3) clinically and radiologically diagnosed subacromial impingement or rotator cuff tear.

The minimum of the follow-up was 2 years (range 24 to 32 months), and 76 patients (82%) participated to the evaluation at this point. In the outpatient group were 37 patients (24 subacromial impingements, 13 rotator cuff tears), and in the hospitalized group 39 patients (23 subacromial impingements, 16 rotator cuff tears). Evaluation methods were clinical examination, radiographic evaluation, isometric elevation strength measurements, as well as the University of California Los Angeles (UCLA) and Constant shoulder scores. All operations were done by one experienced orthopaedic surgeon, and all evaluations at the follow-up by one independent examiner.

Results: At the follow-up, both shoulder scores (UCLA, Constant) were significantly better than the preoperative scores in every patient group (p< 0.001). In the patients with subacromial impingement, muscle strengths of the operated shoulders improved to the level of non-operated, contralateral shoulders, while in the patients with rotator cuff tear, the strength was still diminished (the mean difference in elevation strengths when comparing to the contralateral side was 1.8 kg). However, no significant differences in the shoulder scores or muscle strengths were found when the outpatient group and hospitalized group were compared.

Conclusions: Operative treatment of subacromial impingement and rotator cuff tear after failed conservative treatment led to good results at 2-year follow-up. The patients in the outpatient-group had similar results than the patients in the hospitalized patient-group. However, because the hospitalization is more expensive, the outpatient surgery is recommended.

Correspondence should be addressed to Ms Larissa Welti, Scientific Secretary, EFORT Central Office, Technoparkstrasse 1, CH-8005 Zürich, Switzerland