Predicting Leg Length Change After Valgus-Correcting Lateral Opening-Wedge Versus Medial Closing-Wedge Distal Femoral Osteotomy.
Background: Distal femoral osteotomy (DFO) may be performed via either a lateral opening-wedge (LOW) or medial closing-wedge (MCW) osteotomy with meaningful clinical improvements; however, the effects of each DFO technique on leg length have not been well characterized. Purpose: To (1) validate a ra...
| Publicado en: | Orthopaedic Journal of Sports Medicine Vol. 14; no. 4; pp. 1 - 9 |
|---|---|
| Autores principales: | , , , , , , , , , |
| Formato: | diagnostic images equations & formulas research tables/charts Journal Article |
| Publicado: |
Sage Publications Inc.
Apr2026
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=193394259&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 193394259 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 23259671 FUGT jtl: Orthopaedic Journal of Sports Medicine issn: 23259671 maglogo: Y pubinfo: dt: Apr2026 vid: 14 iid: 4 pid: 344 pub: Sage Publications Inc. place: Thousand Oaks, California artinfo: ui: 193394259 193394259 193394259 10.1177/23259671251414156 193394259 ppf: 1 ppct: 8 formats: tig: atl: Predicting Leg Length Change After Valgus-Correcting Lateral Opening-Wedge Versus Medial Closing-Wedge Distal Femoral Osteotomy. aug: au: Elias, Tristan J. Haneberg, Erik C. Brusalis, Christopher M. Phillips, Andrew Wang, Allen S. Forlenza, Enrico Kogan, Monica Kaleka, Camila Cohen Krych, Aaron J. Yanke, Adam B. affil: Rush University Medical Center, Chicago, Illinois, USA sug: subj: Osteotomy Methods Femur Surgery Leg Length Inequality Risk Factors Risk Assessment Bone Malalignment Surgery Leg Length Inequality Radiography Human Comparative Studies Postoperative Complications Bone Lengthening Academic Medical Centers Femur Head Wilcoxon Rank Sum Test Mann-Whitney U Test ab: Background: Distal femoral osteotomy (DFO) may be performed via either a lateral opening-wedge (LOW) or medial closing-wedge (MCW) osteotomy with meaningful clinical improvements; however, the effects of each DFO technique on leg length have not been well characterized. Purpose: To (1) validate a radiographic measurement technique to predict leg length changes after DFO and (2) compare the change in leg length after DFO for the LOW and MCW techniques. Study Design: Cohort study; Level of evidence, 3. Methods: Preoperative and postoperative full-length standing radiographs obtained from patients who underwent DFO at 1 of 2 academic medical centers were evaluated. The region on the medial (for LOW) or lateral (for MCW) distal femur cortex that would be the "hinge point" during DFO was identified on the radiographs. The distance from the center of the femoral head to the hinge point (A), the distance from the hinge point to the center of the talus (B), and the resultant angle (α) were measured. The equation presented within the text was used to plot the predicted leg length changes corresponding to the change in alpha angle produced by DFO. Comparisons were made between (1) the predicted and measured leg length changes after DFO and (2) the measured leg length change after LOW versus MCW osteotomies. Results: For both LOW (n = 10) and MCW (n = 10) osteotomies, the predicted leg length change was equivalent to the true change measured on postoperative radiographs (LOW: P =.16; MCW: P =.85). There was a mean lengthening of 0.85 mm (range, 0.5-1.3 mm) for every 1° of mechanical axis correction with LOW DFO, compared to a mean shortening of 0.45 mm (range, 0.1-1.4 mm) per 1° of MCW correction. Conclusion: Preoperative radiographic imaging can be used to predict leg length change after DFO with high reliability. Surgeons can expect approximately 0.85 mm of lengthening per 1° of DFO correction when performing LOW osteotomies, compared to 0.45 mm of shortening per 1° of correction for MCW osteotomies. However, the most accurate prediction results from patient-specific calculations. pubtype: Academic Journal doctype: diagnostic images equations & formulas research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|