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Loosening of a biodegradable shoulder staple

1996; Elsevier BV; Volume: 5; Issue: 1 Linguagem: Inglês

10.1016/s1058-2746(96)80035-8

1532-6500

Eugene E. Berg, J. Wills Oglesby,

Nerve Injury and Rehabilitation

Advances in shoulder arthroscopy have prompted a resurgence of interest in low-profile permanent or biodegradable staples and suture anchors for repair of glenoid labral and rotator cuff lesions.3, 3z, lo, 12 A case is reported in which a loose intraarticular bioabsorbable anchor was detected 1 year after its intracapsular implantation for treatment of shoulder instability. This case suggests that implant loosening may be a potentially adverse consequence associated with this type of implant. CASE A 31-year-old assembly line worker at a tire factory had shoulder instability after an on-the-job fall. She had an arthroscopic Bankart capsu!orraphy performed with an investigational BioTak absorbable fixation device (Linvatec Corp., Largo, Fla.) made of poly-L-lactic acid (PLA)7 Eight months later she was referred after being assaulted, and she reported left shoulder pain but denied any episodes of recurrent instability. Shortly afterward she had a hysteric conversion reaction with paraplegia. The physical examination was difficult to perform and produced exaggerated and inconsistent responses. A shoulder arthrogram revealed no evidence of a rotator cuff tear. However, a filling defect outlining a surgical screw was noted in the axillary recess of the joint capsule (Figure 1 ). Examination with the patient under anesthesia revealed a full range of shoulder motion, no evidence of generalized ligamentous laxity, and a negative load and shift test. At arthroscopic examination the glenoid labrum was firmly adherent to