Torsional stability of the femur after harvest of the medial femoral condyle corticocancellous flap

Journal of Reconstructive Microsurgery
Matthew R EndaraJames P Higgins

Abstract

Increasingly large segments of medial femoral condyle (MFC) corticocancellous flaps have been harvested for transfer. Biomechanical evaluations demonstrated no osseous stability impairment under axial loading regardless of flap size harvested. The purpose of this study was to determine the donor site's response to torsional forces. Dual-energy X-ray absorptiometry (DEXA) scanning was performed on 16 pairs of cadaver legs followed by removal of all soft tissues, except knee capsule and ligaments. Specimens were randomly assigned to three groups with bone harvest defects measuring 3, 5, or 7 cm in length and a control group with no osseous resection. Torsional load was applied until fracture or ligamentous failure. Bone failure rates were 12.5, 12.5, 28.6, and 55.6% for control, 3, 5, and 7 cm groups, respectively. Bone failure rate increased with increasing harvest size; the 7 cm group demonstrated a significantly higher rate compared with the other groups combined (55.6 vs. 17.4%; p = 0.03). Failure torque was 45.5, 29.35, 27.4, and 30.83 Nm for the control, 3, 5, and 7 cm groups, respectively (p = 0.11). Harvest of any size segment resulted in a significant decrease in failure torque (p = 0.01). Bone mineral density (BMD) and ...Continue Reading

Citations

Dec 22, 2017·Plastic and Reconstructive Surgery. Global Open·Hidehiko YoshimatsuChieh-Han John Tzou
Aug 28, 2018·Plastic and Reconstructive Surgery·Aviram M GiladiMatthew L Iorio
Aug 18, 2018·Plastic and Reconstructive Surgery·Ghassan MehioBrian T Carlsen
Feb 7, 2019·Current Opinion in Otolaryngology & Head and Neck Surgery·Jacek BanaszewskiAgata Andruszko
Sep 14, 2016·Plastic and Reconstructive Surgery. Global Open·Victor W Wong, James P Higgins
Oct 3, 2018·Plastic and Reconstructive Surgery. Global Open·Jorge G BorettoPablo De Carli
Mar 24, 2021·Plastic and Reconstructive Surgery·Kristine A HuynhKevin C Chung

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