Suture-on-Screw Technique for Os Acetabuli Fixation and Labral Repair

The os acetabuli is thought to arise from unfused secondary ossification centers or as rim fractures in the setting of dysplastic hips or hips with femoroacetabular impingement. Resection of a large os acetabuli can lead to structural instability of the joint, and in these cases, osteoplasty of the impingement, reduction and internal fixation of the osseous fragment, and labral repair have been described in the literature. Anchor fixation for labral repair in the surrounding zone of the osteosynthesis might bring some technical problems. We aim to describe a technical modification improving labral lesion treatment while addressing the rim fracture. The addition of a suture to the screw addresses both lesions because it simultaneously has the function of a screw and an anchor. A suture-on-screw technique for os acetabuli fixation helps surgeons to gain versatility and is more cost-effective for the patients and health services.