The effect of varus and valgus osteotomies on femoral version

Journal of Pediatric Orthopedics
Raymond W LiuDaniel R Cooperman

Abstract

Although seldom described, varus and valgus osteotomies of the proximal femur can affect femoral version. The magnitude of the effect can be predicted with an understanding of the distinction between femoral version and femoral neck inclination. The purpose of this study was to elucidate this relationship. Version, inclination, apparent neck-shaft angle, and true neck-shaft angle were defined and measured in 72 preserved femora. Average values were 19.8+/-11.8 degrees for version versus 14.5+/-10.1 degrees for inclination (P=0.004), giving a mean difference of 27% between version and inclination, with greater discrepancy with increasing neck-shaft angle. There were high correlations between measured inclination and inclination calculated using version and apparent neck-shaft angle (r=0.96) and true neck-shaft angle (r=0.97), validating our formulaic relationship between these variables. We present and validate the concept of inclination, and its relationship with version and neck-shaft angle. This explains the mechanism for a varus osteotomy decreasing anteversion, and a valgus osteotomy increasing anteversion. With an understanding of these concepts, a surgeon can incline the femoral neck axis to achieve a desired amount of ve...Continue Reading

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Citations

Aug 27, 2013·AJR. American Journal of Roentgenology·Reto Sutter, Christian W A Pfirrmann
Jul 28, 2013·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·M NelitzS Lippacher
Jul 4, 2015·HSS Journal : the Musculoskeletal Journal of Hospital for Special Surgery·Ademola A AjuwonRaymond W Liu
Jun 24, 2015·AJR. American Journal of Roentgenology·Reto SutterChristian W A Pfirrmann
Sep 22, 2016·Bone & Joint Research·W Z MorrisR W Liu
Jan 28, 2017·Veterinary and Comparative Orthopaedics and Traumatology : V.C.O.T·Rachel W AdamsSamuel P Franklin
May 29, 2018·Hip International : the Journal of Clinical and Experimental Research on Hip Pathology and Therapy·William Z MorrisRaymond W Liu
Sep 28, 2010·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Aasis UnnanuntanaRichard E Grant
Sep 26, 2017·Journal of Pediatric Orthopedics·Hunter D ArchibaldRaymond W Liu
Sep 14, 2018·Journal of Pediatric Orthopedics·Don T LiDaniel R Cooperman
Mar 22, 2013·The Journal of Bone and Joint Surgery. American Volume·Raymond W LiuDaniel R Cooperman
Nov 8, 2014·Journal of Pediatric Orthopedics·William Z MorrisDaniel R Cooperman
Jul 28, 2015·Journal of Pediatric Orthopedics·Douglas S WeinbergRaymond W Liu
Oct 11, 2019·Journal of Pediatric Orthopedics·Daniel R Cooperman
May 20, 2016·The Journal of Bone and Joint Surgery. American Volume·William Z MorrisRaymond W Liu
Jan 21, 2011·The Journal of Bone and Joint Surgery. American Volume·Sanjeev SabharwalReggie C Hamdy
Dec 11, 2019·Journal of Pediatric Orthopedics·Danielle C MarshallRaymond W Liu
Mar 27, 2015·Journal of Pediatric Orthopedics·Raymond W LiuDaniel R Cooperman
Mar 21, 2013·Clinical Orthopaedics and Related Research·Lisa M TiborMichael Leunig
Aug 21, 2015·The Journal of Bone and Joint Surgery. American Volume·Allison R MoatsDaniel Cooperman
Jul 18, 2014·The Journal of Bone and Joint Surgery. American Volume·Raymond W Liu, Daniel R Cooperman
May 4, 2021·Hip International : the Journal of Clinical and Experimental Research on Hip Pathology and Therapy·Leigh-Anne TuRaymond W Liu

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