The Journal of Bone and Joint Surgery (American). 2005;87:1229-1240.
doi:10.2106/JBJS.D.02035
© 2005 The Journal of Bone and Joint Surgery, Inc.
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Arthroscopic Repair of Full-Thickness Tears of the Supraspinatus: Does the Tendon Really Heal?

Pascal Boileau, MD1, Nicolas Brassart, MD1, Duncan J. Watkinson, FRCS2, Michel Carles, MD1, Armodios M. Hatzidakis, MD3 and Sumant G. Krishnan, MD4

1 Department of Orthopaedic Surgery and Sports Traumatology, Hôpital de L'Archet, University of Nice, 151, Route de St. Antoine de Ginestière, 06202 Nice, France. E-mail address for P. Boileau: boileau.p{at}chu-nice.fr
2 Queen Alexandra Hospital, Southwick Hill Road, Cresham, Portsmouth, Hampshire P063L7, Great Britian
3 Western Orthopaedics P.C., 1601 9th Avenue, Suite 6000, Denver, CO 80218-1217
4 W.B. Carrell Memorial Clinic, 2909 Lemmon Avenue, Dallas, TX 75201

Investigation performed at the Department of Orthopaedic Surgery and Sports Traumatology, Hôpital de L'Archet, University of Nice, Nice, France

A commentary is available with the electronic versions of this article, on our web site (www.jbjs.org) and on our quarterly CD-ROM (call our subscription department, at 781-449-9780, to order the CD-ROM).

Background: Good functional results have been reported for arthroscopic repair of rotator cuff tears, but the rate of tendon-to-bone healing is still unknown. Our hypothesis was that arthroscopic repair of full-thickness supraspinatus tears achieves a rate of complete tendon healing equivalent to those reported in the literature with open or mini-open techniques.

Methods: Sixty-five consecutive shoulders with a chronic full-thickness supraspinatus tear were repaired arthroscopically in sixty-five patients with use of a tension-band suture technique. Patients ranged in age from twenty-nine to seventy-nine years. The average duration of follow-up was twenty-nine months. Fifty-one patients (fifty-one shoulders) had a computed tomographic arthrogram, and fourteen had a magnetic resonance imaging scan, performed between six months and three years after surgery. All patients were assessed with regard to function and the strength of the shoulder elevation.

Results: The rotator cuff was completely healed and watertight in forty-six (71%) of the sixty-five patients and was partially healed in three. Although the supraspinatus tendon did not heal to the tuberosity in sixteen shoulders, the size of the persistent defect was smaller than the initial tear in fifteen. Sixty-two of the sixty-five patients were satisfied with the result. The Constant score improved from an average (and standard deviation) of 51.6 ± 10.6 points preoperatively to 83.8 ± 10.3 points at the time of the last follow-up evaluation (p < 0.001), and the average University of California at Los Angeles score improved from 11.5 ± 1.1 to 32.3 ± 1.3 (p < 0.001). The average strength of the shoulder elevation was significantly better (p = 0.001) when the tendon had healed (7.3 ± 2.9 kg) than when it had not (4.7 ± 1.9 kg). Factors that were negatively associated with tendon healing were increasing age and associated delamination of the subscapularis or infraspinatus tendon. Only ten (43%) of twenty-three patients over the age of sixty-five years had completely healed tendons (p < 0.001).

Conclusions: Arthroscopic repair of an isolated supraspinatus detachment commonly leads to complete tendon healing. The absence of healing of the repaired rotator cuff is associated with inferior strength. Patients over the age of sixty-five years (p = 0.001) and patients with associated delamination of the subscapularis and/or the infraspinatus (p = 0.02) have significantly lower rates of healing.

Level of Evidence: Therapeutic Level IV. See Instructions to Authors for a complete description of levels of evidence.


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