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Intraoperative Use of Ultrasound for Assessing Cam Deformity and Cam Resection

ABSTRACT: The use of intraoperative fluoroscopy is standard among hip arthroscopist to evaluate and confirm the adequacy of cam resection in patients with femoroacetabular impingement syndrome. However, given the inherent limitations of fluoroscopy, additional intraoperative imaging, such as ultrasound, should be pursued. We offer a technique to measure alpha angles intraoperatively using ultrasound to determine adequate cam resection. Technique Video Video 1 Alpha angle measurement of cam deformity in right hip using ultrasound in patient with femoroacetabular impingement syndrome. In the supine position, the hip is dynamically moved into 6 positions preoperatively and postoperatively for adequate assessment of the cam deformity. Key landmarks including the femoral neck and distal end of the joint capsule are identified. After placement of a perfect circle around the femoral head, the alpha angle is calculated using the axis of the femoral neck to the point at which the head loses sphericity.

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PROVIDER: S-EPMC10265616 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature

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