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  • Title: Arthroscopic stabilization of the shoulder: a prospective randomized study of absorbable versus nonabsorbable suture anchors.
    Author: Tan CK, Guisasola I, Machani B, Kemp G, Sinopidis C, Brownson P, Frostick S.
    Journal: Arthroscopy; 2006 Jul; 22(7):716-20. PubMed ID: 16843806.
    Abstract:
    PURPOSE: The aim of this study was to evaluate, prospectively, outcomes following arthroscopic Bankart repair performed with 2 types of suture anchor--the G II (DePuy Mitek, Raynham, MA) nonabsorbable anchor and the Panalok (DePuy Mitek) absorbable anchor. METHODS: Patients with a diagnosis of recurrent traumatic anterior instability of the shoulder who were seen in a single unit between April of 2000 and June of 2003 were considered for inclusion in the study. Patients were assessed preoperatively and postoperatively by means of a subjective, patient-related outcome measurement tool (Oxford Instability Score), a visual analogue scale for pain and instability (VAS Pain and VAS Instability), and a quality-of-life questionnaire (Short Form-12 [SF-12]). Length of follow-up was 1.5 to 5 years (mean, 2.6 y). The incidence of recurrent instability and the level of sporting ability were recorded. Patients were randomized to undergo surgical repair with nonabsorbable or absorbable anchors. RESULTS: A total of 130 patients were included in this study, of whom 6 were lost to follow-up; therefore 124 patients (95%) completed the study. Both types of anchor were highly effective. No differences in rate of recurrence or in any of the scores were noted between the 2 groups. In all, 4 patients in the nonabsorbable group and 3 in the absorbable group experienced additional episodes of dislocation after a traumatic event. Rate of redislocation in the whole series was therefore 6%. In addition, 4 patients, all of them from the absorbable group (4%), described ongoing symptoms of instability but no true dislocations. In all, 85% of the patient group have returned to their previous level of sporting activity. CONCLUSIONS: No differences in outcomes of arthroscopic Bankart repair were seen whether absorbable or nonabsorbable anchors were used. Both are highly effective, with a redislocation rate of 6%. LEVEL OF EVIDENCE: Level I, therapeutic randomized controlled trial.
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