Monday, July 23, 2012

The importance of followup: Arthroscopic Bankart Repair and Capsular Shift for Recurrent Anterior Shoulder Instability: Functional Outcomes and Identification of Risk Factors for Recurrence

Arthroscopic Bankart Repair and Capsular Shift for Recurrent Anterior Shoulder Instability: Functional Outcomes and Identification of Risk Factors for Recurrence - JBJS.

While this article is outside the usual scope of this blog, we include it today because it is exemplary of good clinical research. This Level I prognostic study reveals that there was a 13.2% rate of recurrent instability (over half within the first year) after arthroscopic Bankart repair and capsular shift. This recurrence rate is substantially higher than that commonly presented in Level IV case series.
The authors went on to assess the factors that contributed to an increased risk of recurrence, which was found to be "...independently predicted by the patient’s age at surgery, the severity of glenoid bone loss, and the presence of an engaging Hill-Sachs lesion (all p < 0.001)."
Their analysis found that a patient 15 years of age with an engaging Hill-Sachs lesion and >25% glenoid bone loss had over a 75% chance of recurrent instability with the first two years of repair, whereas a patient 30 years of age, with 5% or less glenoid bone loss and no engaging Hill-Sachs lesion had a 2% chance of recurrent instability.

This type of prospective study will provide reliable information on which we can continue to refine our patient selection and surgical techniques, minimizing the risk of treatment failure.

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