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Monoplanar, biplanar open wedge osteotomy yields similar outcomes
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BARCELONA — Monoplanar supracondylar femoral open wedge osteotomy for axial stiffness and torsional stiffness yielded similar outcomes compared with a biplanar open wedge osteotomy, according to data presented at the EFORT Annual Congress.
In their study, which received the Michael Freeman Award, Martin Pietsch, MD, and colleagues performed lateral distal supracondylar opening-wedge osteotomies in 10 composite femurs of the fourth-generation (Sawbones Europe AB). Among the 10 osteotomies, five were monoplanar and five were biplanar.
Results showed no bone, implant or construct damage among the monoplanar and biplanar groups during loading tests. Researchers noted cutting the contralateral corticalis reduced axial stiffness in both groups, but not significantly. Although cutting the contralateral corticalis for internal rotation reduced torsional stiffness for both groups, according to the results, only the monplanar group experienced significantly reduced torsional stiffness for external rotation. The investigators also found that neither group showed differences with intact or fractured contralateral corticalis. Compared with the biplanar group, results showed less torsional stiffness with intact or with fractures contralateral corticalis in the monplanar group. – by Casey Tingle
Reference:
Pietsch M, et al. Paper 2278. Presented at: EFORT Annual Congress; May 30-June 1, 2018; Barcelona, Spain.
Disclosures: Pietsch reports no relevant financial disclosures.