Abstract
This article is a retrospective report of the outcome of 43 unilateral unstable, vertically displaced pelvic ring injuries using a reduction frame which is attached to the OR table, along with special instruments allowing "unlocking" of the fracture to facilitate reduction. The frame utilized by the authors is a modification of the Starr Frame® (Starr Frame, LLC, Richardson), which has been refined to be lower profile, more accessible, and more versatile in pin placement. They have also reported a new attachment for the frame to apply lateral traction to the fractured hemipelvis. The authors provide a detailed description of the techniques involved in securing the patient to the frame and table, and then the stepwise application of multiplanar tractions to the fractured hemipelvis. Their technique of unlocking closed reduction (UCRT) involved controlled application of lateral distraction to disimpact the compressed or overlapping fractured bone surfaces, followed by distal and anterior traction through a femoral supracondylar pin, and direct manipulation of the hemipelvis through a supracetabular "LC-2" half pin. Reduction is followed by percutaneous fixation using 7.3-mm cannulated screws across the posterior ring and either external fixation or subcutaneous supra-acetabular pedicle screw internal fixation device (INFIX) anteriorly.