JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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Dynamic compression plates for Vancouver type B periprosthetic femoral fractures: a 3-year follow-up of 18 cases.

Acta Orthopaedica 2005 August
BACKGROUND: There is no consensus on the best surgical treatment of periprosthetic femoral fractures. We report our experience with a dynamic compression plate.

PATIENTS AND METHODS: We reviewed the results of 18 periprosthetic femoral fractures treated with open reduction and internal fixation using the dynamic compression plate (DCP). There were 7 Vancouver type B1, 2 type B2 and 9 type B3 fractures. 16 cases had previously undergone at least one revision procedure. In addition to a DCP plate, all B2 and B3 fractures were revised to cemented prostheses, and all B3 fractures were revised with impaction grafting. Mean follow-up was 39 months.

RESULTS: The mean healing time for those 11 cases that united was 13 months. One B1-type and one B3-type fracture with plate fracture within 8 months of surgery failed to heal. Furthermore, one B1-type fracture and one B2-type fracture failed and developed nonunion. 3 patients died, from causes not related to surgery, within 8 months after surgery without signs of healing.

INTERPRETATION: Open reduction and internal fixation using DCPs seems to be a valid method for the treatment of postoperative periprosthetic femoral fractures with stable stem in place. If the stem is unstable, we suggest that DCPs may be used in association with femoral revision using a long stem. In cases with stable stem (B1), we are inclined to agree with other authors that additional fixation using an extramedullary cortical strut graft may be necessary to improve stability and promote final healing.

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