Post operative stifle range of motion in dogs with medial patellar luxation undergoing either trochlear wedge recession or trochlear block recession surgery

Radka Garnoeva

doi:10.30704/http-www-jivs-net.868512

Abstract

The aim of this study was to evaluate post-operative range of motion of stifle joints in dogs affected with medial patellar luxation in order to compare two surgical techniques: trochlear wedge recession vs. trochlear block recession. The study was done with 67 joints from 54 small breed dogs (21 Mini-Pinschers, 16 Chihuahuas, 11 Pomeranians and 6 Yorkshire terriers). From these, 31 joints underwent wedge recession surgery and the other 36: block recession surgery. In wedge recession surgery, trochlear groove deepening was done by removal of a V-shaped wedge, whereas in block recession, the wedge was rectangular. Block recession is suggested to provide a deeper and wider trochlea with preservation of the major part of the articular cartilage. The results suggested that both trochleoplasty techniques resulted in reduction of joint range of motion and improvement of limb alignment at the first post-operative month.

Highlights

Medial patellar luxation is a common hereditary Results from comparative assessment of the orthopedic condition in small breeds of dogs superiority of wedge and block recession of the (Wangdee et al, 2013)
The aim of this study was to compare post- measurements, dogs were anaesthetized as operative range of motion of stifle joints in dogs followed: s.c. premedication with 0.02 mg/kg with medial patellar luxation corrected by two atropine sulfate (Atropinum sulfuricum, surgical techniques: wedge recession and block Sopharma, Sofia – Bulgaria) and induction of recession of femoral trochlea
Median range of motion (ROM) of affected knees was 97°, and one month after block recession surgery, it decreased to 95.5° (p=0.09; Figure 2)

Summary

Introduction

Medial patellar luxation is a common hereditary Results from comparative assessment of the orthopedic condition in small breeds of dogs superiority of wedge and block recession of the (Wangdee et al, 2013). The evaluation of bone trochlear groove are contradictory (Linney et al, deformities by radiography is important for 2011; Fujii et al, 2013; Wangdee et al, 2013). The aim of the surgical of the patella (Talcott et al, 2000). Correction is to provide stability of the patella and Older cases of MPL are most prone to to restore the normal quadriceps muscle development of secondary osteoarthritis with mechanism. Surgery should not be postponed due progressive joint cartilage erosion and bone to the risk from aggravation of tissue damage and lesions (Edge-Hughes & Nicholson, 2007). Bone deformities (Wangdee et al, 2008; signs of occurring degenerative joint disease are Wangdee & Torwattanachai, 2010)

Objectives

Results

Conclusion