Restoration of anterior glenoid bone defects in posttraumatic recurrent anterior shoulder instability using the J-bone graft shows anatomic graft remodeling

The American Journal of Sports Medicine
Philipp MoroderAlexander Auffarth

Abstract

The J-bone graft technique has previously been reported for anatomic restoration of the bony glenoid surface in cases of posttraumatic recurrent anterior shoulder instability with significant glenoid bone loss. To analyze the physiological remodeling process of the J-bone graft over time. Case series; Level of evidence, 4. Thirty-one consecutive patients treated with anatomic glenoid restoration surgery using the J-bone graft for posttraumatic recurrent anterior shoulder instability with a significant bony glenoid defect were included in this study. Twenty patients received 3-dimensional computed tomography scans of the affected shoulder preoperatively, postoperatively, and at 1-year follow-up. On "en face" views of the glenoid, the change over time of the glenoid diameter, glenoid area, and glenoid defect size in relation to a best-fit circle indicating 100% was measured. The average glenoid diameter increased from 81.0% preoperatively to 110.4% postoperatively (P < .001). At 1-year follow-up, the diameter had decreased significantly to 100.6% (P < .001), which is concordant to a theoretical perfect glenoid diameter of 100% (P = .73). The average glenoid surface area increased from 80.8% preoperatively to 110.0% postoperativel...Continue Reading

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