Osteochondrosis

OBJECTIVE: To describe an alternative technique and resulting outcomes for arthroscopic removal of osteochondral (OC) fragments from the proximal intertarsal joint (PIJ) using a direct approach without resection of the membrane between the tarsocrural joint (TCJ) and the PIJ.

STUDY DESIGN: Retrospective case series.

ANIMALS: Client owned horses (n = 11) with Category 1 OC fragments in the PIJ.

Authors: I. M. Wright and G. J. Minshall
Journal: Equine Veterinary Journal

Summary
Reasons for performing study

Osteochondritis dissecans (OCD) of the distal sagittal ridge of the third metacarpal bone (McIII) has not previously been described in the literature.
Objectives

To describe the clinical, radiological and arthroscopic features of OCD of the distal sagittal ridge of the McIII and to report outcome in a series of cases.
Study design

Retrospective case series.
Methods

Authors: Guillaume Counotte, Gerrit Kampman, Vincent Hinnen
Journal: Journal of Equine Veterinary Science

The influence of supplements containing magnesium on the etiology of osteochondrosis (OC) is unknown. We did two studies to measure the effect of additional minerals (especially magnesium) on OC. In study 1 (five studs, in total 64 mares and foals aged 0 to 5 months, equally divided into two groups), supplementation with minerals and placebo was used. Blood samples were taken from foals at age of 2, 8, and 16 weeks. At the same time, milk samples were taken from the mare.

Category: Equine - Osteochondrosis
Authors: S. Lykkjen, H. F. Olsen, N. I. Dolvik, A. M. Grøndahl, K. H. Røed and G. Klemetsdal
Journal: Equine Veterinary Journal

Summary
Reasons for performing study

The pathogenesis of osteochondrosis (OC) and palmar/plantar first phalanx osteochondral fragments (POFs) is multifactorial, but specific knowledge of heritability is limited.
Objectives

Category: Equine - Osteochondrosis
Authors: N Tsuzuki, JP Seo, S Haneda, K Yamada, H Furuoka, Y Tabata and N Sasaki
Journal: Australian Veterinary Journal

Case report A 13-month-old Thoroughbred filly was diagnosed with osteochondritis dissecans (OCD) of the medial tibial malleolus. A sponge impregnated with platelet-rich plasma, bone morphogenetic protein-2, mesenchymal stem cells and gelatin β-tricalcium phosphate was applied to the OCD site following arthroscopy and debridement. Postoperative radiography (every week for 16 weeks), computed tomography (CT) (16 weeks postoperatively), arthroscopy (16 weeks postoperatively) and biopsy of the regenerated tissue (16 weeks postoperatively) were performed to evaluate the outcome.

Authors: Pascal Fontaine, Laurent Blond, Kate Alexander, Guy Beauchamp, Hélène Richard, Sheila Laverty
Journal: The Veterinary Journal

Osteochondrosis dissecans (OCD) is a focal failure of endochondral ossification of the epiphysis characterized by the presence of cartilage flaps and osteochondral fragments. The objective of this study was to image epiphyseal development in the equine pelvic limb to determine whether there was a variation in site maturation that could be a predisposing factor for OCD.

Category: Equine - Osteochondrosis
Authors: P. René van Weeren, Leo B. Jeffcott
Journal: The Veterinary Journal

Twenty years ago a supplement of Equine Veterinary Journal was devoted to equine osteochondrosis (OC) and recognised the importance of this developmental disease to the equine industry. In the accompanying editorial several controversial issues were identified and a number of areas for further research were highlighted. Today, equine OC is still a major clinical problem, but the on-going research has resulted in much improved knowledge and understanding of this highly complicated disease.

Category: Equine - Osteochondrosis
Authors: P. René van Weeren, Jean-Marie Denoix
Journal: The Veterinary Journal

Juvenile osteochondral conditions (JOCC) have a major impact on the equine industry and include many musculoskeletal disorders of the young horse, of which osteochondrosis (OC) is the most prominent. The Breeding, Osteochondral Status and Athletic Career (BOSAC) project is the first large, comprehensive, longitudinal field study on the subject conducted in three breeds of performance horses (Thoroughbreds, Standardbred Trotters and Warmbloods) that were monitored in their natural environment where they were reared under common field conditions.

Category: Equine - Osteochondrosis
Authors: Céline Robert, Jean-Paul Valette, Sandrine Jacquet, Jean-Marie Denoix
Journal: The Veterinary Journal

The relationship between osteoarticular status and future athletic capacity is commonly accepted in equine practice, but there is little to support this belief in Thoroughbreds. The objective of this study was to assess the prevalence of juvenile osteochondral conditions (JOCC) in Thoroughbred yearlings and to investigate the significance of these with regard to subsequent racing performance. The radiographic files from 328 Thoroughbred yearlings born in Normandy were assessed in a consistent manner and entered into a database together with racing records.

Category: Equine - Osteochondrosis
Authors: A. Ricard, M. Perrocheau, A. Couroucé-Malblanc, J.P. Valette, G. Tourtoulou, J.M. Dufosset, C. Robert, S. Chaffaux, J.M. Denoix, G. Guérin
Journal: The Veterinary Journal

Juvenile osteochondral conditions (JOCC) have been defined as lesions resulting from biomechanical influences (compressive, tensional or shear forces) on the developing and growing musculoskeletal system. They include different types of osteochondrosis, osteochondral fragmentation of the articular surface or of the periarticular margins, juvenile subchondral bone cysts, osteochondral collapse, avulsion fractures of epiphyseal (or metaphyseal) ossifying bone and ‘physitis’.

Category: Equine - Osteochondrosis