Related Experiment Video
Updated: Jan 6, 2026
Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy
Published on: February 17, 2023
Precision of preoperative planning in medial opening wedge high tibial osteotomy: A retrospective study
Ana Suarez-Quintero1,2,3, Javier Olmedo Palma1,2,3, Ramon Alvarez de Manzaneda1,2,3
1Servicio de Cirugía Ortopédica y Traumatología, Complejo Hospitalario de Torrecárdenas, Almería, Spain.
Background:
Medial opening wedge high tibial osteotomy (HTO) is a valid treatment for unicompartmental osteoarthritis due to varus alignment. This study aimed to examine the relationships between preoperative planning, intraoperative opening, and postoperative measurements, focusing on the correction of the mechanical axis.
Methods:
Radiological measurements, including HKA, mPTA, mLDFA, JLCA, and %WBL, were compared in 21 patients before and after surgery. The osteotomy size was calculated manually using the Miniaci method. A regression analysis determined which variables influenced successful correction (%WBL postoperative 45-55 %).
Results:
The mean age was 40 years. The difference between the intraoperative opening and the Miniaci-calculated size was 0.45 ± 1.05 mm (p = 0.048). Postoperative corrections were significant for HKA, mMPTA, and %WBL (p < 0.001). Preoperative HKA and Miniaci values negatively predicted successful correction.
Conclusions:
The Miniaci method tends to underestimate intraoperative opening size, but still allows for sufficient correction of the mechanical axis to the joint center.
