Anterior deltoid reeducation for irreparable rotator cuff tears revisited

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Background

A previous study introduced a method of conservative treatment of irreparable rotator cuff tears (RCTs) using a rehabilitation program (anterior deltoid reeducation [ADR]). The purposes of this study were to present our experience with ADR and to compare our results with those of the previous study.

Methods

Thirty consecutive elderly patients with irreparable RCTs were prospectively enrolled and taught how to perform the home-based ADR program for a period of 3 months. Clinical and radiographic evaluations were determined at the first visit. Clinical follow-up was available after 9 and 24 months. Failure of the ADR program was defined as abandonment of the ADR program because of pain and/or a patient's decision to undergo surgery at any time or a less than 20-point improvement in the American Shoulder and Elbow Surgeons score at last follow-up.

Results

Of the 30 patients, 9 did not complete the 3-month ADR program because of pain. Of the 21 patients who completed the ADR program, 3 were not satisfied with the outcome and went on to undergo surgery. Eighteen of the 30 patients completed the program and had a follow-up at 24 months. Among these 18 cases, there were significant mean improvements between pre-ADR and follow-up outcome scores among all variables (P < .005). However, 6 of these 18 patients did not have an improvement in the American Shoulder and Elbow Surgeons score by at least 20 points. Overall, the ADR program had a success rate of only 40%.

Conclusion

A 3-month ADR program had limited success to treat irreparable RCTs. We could not reproduce the high rate of satisfactory results of 82% found in a previous study.

Section snippets

Patients and methods

From June 2009 to June 2010, 31 consecutive patients with a minimum age of 55 years and the diagnoses of chronic irreparable RCTs, were prospectively enrolled after patient consent. One patient died during the course of the study and was excluded. There were 19 female and 11 male patients enrolled in the study. The average patient age was 74 years (range, 55-89 years). The other exclusion criteria were prior fracture malunion, cancer or metastatic lesion to the shoulder, traumatic reparable

Results

Only 21 of 30 patients were compliant. The 9 noncompliant patients were not able to complete the ADR program because of pain and persistent symptoms. Of these 9 patients, 5 went on to undergo reverse TSA and 1 underwent partial rotator cuff repair. Twenty-one patients completed the 3-month ADR program. Of these 21 patients, 3 were not satisfied with the outcome at 3 months and went on to undergo reverse TSA (2 cases) or partial rotator cuff repair (1 case). Eighteen of the 30 patients completed

Discussion

ADR has been suggested as an alternative nonsurgical treatment option for older patients presenting with irreparable RCTs.10, 14 Biomechanical studies have shown that compensatory increases in force of the deltoid and the remaining rotator cuff are required to achieve improvements of shoulder function.9, 10, 15, 19, 22 This includes rehabilitation of the anterior deltoid muscle to resist superior escape forces.22 There are limited clinical studies, however, that have specifically examined

Conclusion

In non-debilitated elderly patients, a 3-month ADR protocol to treat symptomatic chronic irreparable RCTs had limited success at 2 years' follow-up. Success was less likely for those with pretreatment active forward flexion of less than 50°.

Disclaimer

The authors, their immediate families, and any research foundations with which they are affiliated have not received any financial payments or other benefits from any commercial entity related to the subject of this article.

Acknowledgments

We thank Raoul Burchette, MA, MS, biostatistician, for his help with the statistical analysis.

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    Approval authority: Kaiser Permanente Southern California Institutional Review Board (No. 5393).

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