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Risk factors for recurrence after Bankart repair: a systematic review and meta-analysis
Mingtao Zhang1, Jiaxin Liu1, Yaofei Jia2
1Department of Orthopaedics, Lanzhou University Second Hospital, No. 82 Cuiyingmen, Chengguan District, Lanzhou, 730030, Gansu, China.
Background:
The aim of this literature review was to identify preoperative risk factors associated with recurrent instability after Bankart repair.
Methods:
The PubMed, Web of Science, Embase, and Cochrane Library databases were searched for potentially eligible articles. Two reviewers independently screened the titles and abstracts using prespecified criteria. Articles were included if they clearly stated the risk factors for recurrence after Bankart repair. Data on patient characteristics and recurrence rate were collected from each study. A random-effects model was used for the meta-analysis and the statistical analysis was performed using Review Manager 5.4 software.
Results:
Nineteen studies that included 2922 participants met the inclusion criteria. The overall pooled prevalence of recurrent instability was 15.3% (range 6.9-42). The mean follow-up duration was 40.5 months (18-108). Twenty-one risk factors were identified, 10 of which were explored quantitatively. Statistically significant risk factors for recurrent instability following a Bankart procedure were age under 20 years (odds ratio [OR] 4.24, 95% confidence interval [CI] 2.8-96.23, p < 0.00001), a Hill-Sachs lesion (OR 3.61, 95% CI 2.06-6.33, p < 0.00001), a glenoid bone lesion (OR 2.8, 95% CI 1.96-4.01, p < 0.00001), shoulder hyperlaxity (OR 4.55, 95% CI 2.19-9.44, p < 0.0001), and an off-track lesion (OR 5.53, 95% CI 2.21-13.86, p = 0.0003). There was moderate evidence indicating that male sex (OR 1.6, 95% CI 1.07-2.37, p = 0.02) and playing contact sports (OR 1.54, 95% CI 0.96-2.45, p = 0.07) were further risk factors. Dominant side, a superior labrum from anterior to posterior (SLAP) lesion, and more than five preoperative dislocations were not found to be risk factors.
Conclusions:
Patients younger than 20 years of age, a Hill-Sachs lesion, a glenoid bone lesion, shoulder hyperlaxity, and an off-track lesion appear to be significant predictors of recurrent instability following a Bankart procedure. Factors such as male sex and playing contact sports were associated with recurrent instability. Dominant side, a SLAP lesion, and more than five preoperative dislocations were not significant risk factors.