Bone

Authors: S. Plevin and J. McLellan
Journal: Equine Veterinary Journal

Summary

Reasons for performing the study

Limited information exists regarding the prognosis for juvenile racehorses sustaining injury to the suspensory ligament branch insertion (JISBI).

Objectives

To investigate the effect of JISBI on racing performance; and to assess whether the severity of JISBI is prognostically important.

Category: Bone - Equine - Ligament
Authors: J. McLellan and S. Plevin
Journal: Equine Veterinary Journal

Summary

Reasons for performing study

Sesamoiditis is believed to be associated with injury to the suspensory branch attachment and is a common radiographic finding in yearling Thoroughbreds. No study has investigated relationships between yearling sesamoiditis and subsequent development of suspensory ligament branch injury (SLBI) in early racehorse training.

Category: Bone - Equine - Ligament
Authors: S. Martig, W. Chen, P. V. S. Lee and R. C. Whitton
Journal: Equine Veterinary Journal

Summary

Category: Bone - Equine
Authors: Spooner H*, Hoffman R and Haffner J
Journal: Equine Veterinary Journal

Introduction

Previous research suggests stalling may have a negative influence on bone mineral content (BMC). Yet slow, long-distance exercise has not been successful in improving BMC compared to free-choice exercise. Still, it is a common practice to stall horses with light exercise and minimal turnout. We hypothesized stalled horses, despite “weekend” turnout and light exercise, would have lower estimated BMC compared to pasture turnout.

Category: Bone - Equine
Authors: Holmes J, Mirams M, Mackie E and Whitton C
Journal: Equine Veterinary Journal

Introduction

Subchondral bone fatigue is an important cause of poor performance, morbidity and mortality in racehorses. Fatigued bone is repaired by remodelling, a process that is attenuated under high cyclical loads, yet the effects of training on remodelling activity in Thoroughbred racehorses is unknown. We hypothesised that remodelling rates are lower in training horses than those that are resting from training.

Category: Bone - Equine
Authors: M. T. Alber, M. P. Brown, K. A. Merritt and T. N. Trumble
Journal: Equine Veterinary Journal

Reasons for performing study

Palmar osteochondral disease (POD) is an overload arthrosis that commonly affects fetlock joints of racing Thoroughbreds (TB) but the aetiopathogenesis of the disease has not been well defined.
Objectives

The aim of this study was to compare India ink perfusion in the dorsal and palmar condyles of the third metacarpal bone (McIII) in both passively flexed and maximally extended fetlock joints from paired equine cadaver limbs.
Study design

Category: Anatomic study - Bone - Equine
Authors: A. M. Beccar Varela, L. A. Patipa and R. B. Eggleston
Journal: Equine Veterinary Education

A 20-month-old Warmblood filly was evaluated for acute onset of a non weightbearing lameness and swelling of the left hindlimb. Clinical and lameness evaluation and diagnostic intrasynovial anaesthesia isolated the lameness to the left hind metatarsophalangeal region. Radiography and ultrasonography revealed a subchondral cystic lesion of the apical portion of the lateral proximal sesamoid bone associated with oedema and synovial effusion of the metatarsophalangeal joint.

Category: Bone - Case study - Equine - Lameness
Authors: Elizabeth H. Yorke, Carter E. Judy, Travis C. Saveraid, Conor P. McGowan and Fred J. Caldwell
Journal: Veterinary Radiology and Ultrasound

Distal border fragments of the navicular bone are increasingly being detected due to the improved capabilities of magnetic resonance imaging (MRI), but their clinical significance remains unclear. The purpose of this retrospective study was to describe the location, size, and frequency of fragments in a cohort of horses presented for MRI of the foot and to compare MRI findings with severity of lameness. Archived MRI studies and medical records were searched from March 2006 to June 2008. Horses were included if a distal border fragment of the navicular bone was visible in MRI scans.

Category: Bone - Equine - Lameness - MRI
Authors: C. P. Crijns, A. Martens, H.-J. Bergman, H. van der Veen, L. Duchateau, H. J. J. van Bree and I. M. V. L. Gielen
Journal: Equine Veterinary Journal

Summary
Reasons for performing study

Computed tomography (CT) is increasingly accessible in equine referral hospitals.
Objectives

To document the level of agreement within and between radiography and CT in characterising equine distal limb fractures.
Study design

Retrospective descriptive study.
Methods

Authors: M. R. W. Smith, I. M. Wright
Journal: Equine Veterinary Journal

Summary
Reasons for performing study

Fractures of the proximal phalanx are generally considered to result from monotonic supraphysiological loads, but radiological observations from clinical cases suggest there may be a stress-related aetiology.
Objectives

To determine whether there are radiologically identifiable prodromal changes in Thoroughbred racehorses with confirmed parasagittal fractures of the proximal phalanx.
Study design

Retrospective cross-sectional study.
Methods