Effect of Femoral Head and Neck Osteotomy on Canines’ Functional Pelvic Position and Locomotion

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http://hdl.handle.net/10138/346012

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Engstig, M.; Vesterinen, S.; Morelius, M.; Junnila, J.; Hyytiäinen, H.K. Effect of Femoral Head and Neck Osteotomy on Canines’ Functional Pelvic Position and Locomotion. Animals 2022, 12, 1631.

Title: Effect of Femoral Head and Neck Osteotomy on Canines’ Functional Pelvic Position and Locomotion
Author: Engstig, Madeleine; Vesterinen, Senni; Morelius, Mikael; Junnila, Jouni; Hyytiäinen, Heli K.
Publisher: Multidisciplinary Digital Publishing Institute
Date: 2022-06-24
URI: http://hdl.handle.net/10138/346012
Abstract: The long-term effect of femoral head and neck osteotomy (FHO) on the locomotory system of dogs was evaluated. The study comprised an owner questionnaire and an orthopaedic examination, anatomical measurements, and pressure-sensitive walkway analysis for dogs. Linear mixed effect models were used for statistical analysis. Ten dogs with a median of 2.5 years since their unilateral FHO were included. According to the questionnaire results, nine dogs had returned to a normal physical activity level. Muscle atrophy (<i>p</i> = 0.005), less extension in the coxofemoral joint (<i>p</i> = 0.003), and less static weight bearing on the FHO limb (<i>p</i> = 0.003) were observed. No consistent pattern regarding tilt or position of the pelvis was noted when measuring height of the tuber ischii (<i>p</i> = 0.39). Five of the dogs tilted away from, and five towards the FHO side when measured from the tuber sacrale with a Myrin goniometer. No differences regarding stance time, swing time, or peak pressure between the FHO and non-FHO limb were seen in trot (<i>p</i> = 0.70, <i>p</i> = 0.26, and <i>p</i> = 0.91, respectively). Over the long term, the FHO limb has muscle atrophy, decreased coxofemoral extension, and decreased static weight bearing. However, this does not seem to affect the trot of the dogs. Dog owners considered the outcome of surgery to be good or excellent.


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