INTRODUCTION Medial patellar luxation is thought to be associated with a high proximal position of the patella in the trochlear groove. OBJECTIVE To determine whether the ratio of patellar ligament length and patellar length (L:P) is influenced by the stifle angle (75°, 96°, 113°, 130°, and 148°) in small dog breeds and to compare the L:P ratio in dogs of three small dog breeds with and witho...

BACKGROUND The ovine stifle joint is an important location for investigations on the repair of articular cartilage defects in preclinical large animals. The classical medial parapatellar approach to the femoral trochlea is hazardous because of the high risk of postoperative patellar luxation. Here, we describe a low morbidity surgical exposure of the ovine trochlea without the necessity for int...

Case Description- Two foals were referred for lameness evaluation. Case 1 was an 8-month-old male KWPN foal and the second one was a 2-day-old female Arabian foal. Clinical Findings- The KWPN foal was presented with severe lameness at walk and the second foal was unable to stand. In both patients luxation of the patella was confirmed on physical and radiological examinations. Treatment and Outc...

Today, the treatment of patellar luxations using current techniques has become a very common procedureas part of the surgical treatment. Nevertheless, there are some doubts about such procedures in restraining the patella in lower grade cases. The purpose of the present retrospective clinical study was to determine theefficacy of the soft tissue and bone reconstructive procedures used for vario...

Patella luxations occur frequently in dogs (primarily medial (MPL) [1]) and less commonly in cats [2]. It is normally seen in small breed dogs but is becoming more common in dogs such as the Labrador retriever. It can be unilateral or bilateral (50-65%) of cases. Both conservative and surgical methods are used for correction of patella luxation and this decision-making usually depends on the se...

The need to characterize and understand the contribution of femoral and tibial bone deformity associated with medial patellar luxation was recognized by Putnam and Singleton fifty years ago (1, 2). For a very long time we struggled to comprehend this problem because the only means to image these bones non-invasively was radiology. Two-dimensional radiographic images were subject to projection a...

Medial patellar luxation is defined as medial displacement of the patella from the trochlear groove. In dogs, medial luxations account for 75% of all patellar luxation cases, and are frequently associated with patella alta. Common surgical treatments for medial luxation are trochleoplasty and lateral transposition of the crest to drive the patella into the correct anatomical alignment. Postoper...

OBJECTIVE To measure the quadriceps angle (Q-angle) in dogs with congenital patellar luxation using magnetic resonance (MR) methods. STUDY DESIGN Prospective clinical study. ANIMALS Thirty-eight client-owned dogs. METHODS Thirty-eight dogs were examined and placed into the following groups based on the degree of patellar instability: normal, grade I, grade II, and grade III. MR images of ...

Case DescriptionTwo foals were referred for lameness evaluation. Case 1 was an 8-month-old male KWPN foal and the second one was a 2-day-old female Arabian foal. Clinical FindingsThe KWPN foal was presented with severe lameness at walk and the second foal was unable to stand. In both patients luxation of the patella was confirmed on physical and radiological examinations. Treatment and OutcomeP...

Abstract The aim of this study was to report patellar groove replacement in a 6-year-old domestic short hair cat with chronic unilateral pelvic limb lameness and severe femoro-patellar osteoarthritis due medial luxation. This is case report. Computed tomographic scan the affected revealed marked periarticular osteophytosis, trochlear ridge erosion, flattening femoral trochlea, ectopic pseudo-tr...