Bone

Authors: Olive, J.; Mair, T.S.; Charles, B.
Journal: Equine Veterinary Education

Bone marrow lesions (BMLs) (also known as 'bone bruises', 'bone oedema', 'bone contusions' and 'occult fractures') within the middle phalanx were diagnosed by standing low field magnetic resonance imaging (MRI) in 7 horses. The lesions were characterised by low signal intensity on T1- and T2*-weighted gradient echo sequences, mildly increased signal intensity on T2 fast spin echo sequences, and high signal intensity on short tau inversion recovery (STIR) sequences.

Category: Bone - Equine - Imaging - MRI
Authors: Hu, A.J.; Grant, B.; Cannon, J.
Journal: Equine Veterinary Education

Vertebral body osteomyelitis in the cervical spine secondary to Rhodococcus equi has been treated both medically and surgically. This Case Report describes a 4-month-old foal exhibiting severe neurological signs from R. equi vertebral body osteomyelitis. Rapid, significant resolvement of neurological signs was noted in this case with surgical debridement and use of synthetic bone filler. The outcome suggests that aggressive surgical therapy in conjunction with synthetic allograft may be indicated in treatment of cervical vertebral body osteomyelitis.

Category: Bone - Equine - Spine
Authors: Marc T. Launois, DMV; Jean-Michel E. F. Vandeweerd, DMV, MS; Roland A. R. Perrin, DMV; Laurent Brogniez, DMV; Francis G. Desbrosse, DMV; Peter D. Clegg, MA, VetMB
Journal: Journal of the American Veterinary Medical Association

Case Description—3 horses with lameness localized to the proximal aspect of the metacarpus or metatarsus.

Authors: CERI E. SHERLOCK , TIMOTHY S. MAIR , FRERIK TER BRAAKE
Journal: Veterinary Radiology and Ultrasound

We report the use of low-field standing magnetic resonance imaging in the standing horse for the diagnosis of osseous lesions in the metacarpophalangeal (MCP) or metatarsophalangeal (MTP) joint that were not apparent using standard radiography. Thirteen horses were studied and all had thickening of the subchondral bone plate and abnormal signal intensity in the adjacent spongiosa in either the condyles of metacarpal/metatarsal III or the proximal phalanx or both.

Category: Bone - Equine - Imaging - MRI
Authors: Naoki Sasaki, DVM, PhD; Takuto Minami, DVM; Kazutaka Yamada, DVM, PhD; Haruo Yamada, DVM, PhD; Yoshinobu Inoue, PhD; Mitsutoshi Kobayashi, DVM, PhD; Yasuhiko Tabata, PhD, DMS, DP
Journal: American Journal of Veterinary Research

Objective—To evaluate the effect of intra-articular injection of gelatin hydrogel microspheres containing basic fibroblast growth factor (bFGF) on experimentally induced defects in third metacarpal bones (MC3s) of horses, in vivo.

Animals—6 healthy adult Thoroughbreds.

Category: Bone - Equine
Authors: Luis M. Rubio-Martínez, DVM, PhD, DVSc; Antonio M. Cruz, DVM, MVM, MSc, DrMedVet; Karen Gordon, PhD; Mark B. Hurtig, DVM, MVSc
Journal: American Journal of Veterinary Research

Objective—To characterize the microstructure of subchondral bone (SCB) plate and trabecular bone (TBB) of the distopalmar aspect of the condyles of third metacarpal bones (MC3s) from Thoroughbred racehorses at 2 different stages of SCB disease via micro–computed tomography (CT). Sample Population—12 pairs of MC3s from Thoroughbred racehorses euthanized for various reasons. Procedures—MC3s were collected from horses with mild (n = 6) or severe (6) SCB disease, as determined via micro-CT.

Category: Bone - CT - Equine
Authors: Luis M. Rubio-Martínez, DVM, PhD, DVSc; Antonio M. Cruz, DVM, MVM, MSc, DrMedVet; Karen Gordon, PhD; Mark B. Hurtig, DVM, MVSc
Journal: American Journal of Veterinary Research

Objective—To characterize the mechanical properties of subchondral bone (SCB) of the distopalmar aspect of the condyles of the third metacarpal bone (MC3) and their correlations with structural aspects of MC3s in Thoroughbred racehorses. Sample Population—12 pairs of MC3s from Thoroughbred racehorses euthanized for various reasons. Procedures—MC3s were collected from horses with mild (n = 6) and with severe (6) SCB changes, as determined by micro–computed tomography (CT).

Category: Bone - Equine
Authors: MELANIE PERRIER DVM , YAN LU MD , BRETT NEMKE, MS, HIROHITO KOBAYASHI, MS , ANNA PETERSON, and MARK MARKEL DVM, PhD, Diplomate ACVS
Journal: Veterinary surgery

ABSTRACT
Objective—To compare the efficacy of recombinant human bone morphogenetic protein-2 (rhBMP-2)/calcium phosphate (CP) to autogenous cancellous bone graft (CBG) and to no treatment on bone healing, in surgically induced osteotomies and ostectomies of the accessory metatarsal bones in an equine model.

Study Design—Experimental.

Animals—Adult horses (n=9).

Category: Bone - Equine
Authors: Wallis, T.W.; Goodrich, L.R.; McIlwraith, C.W.; Frisbie, D.D.; Hendrickson, D.A.; Trotter, G.W.; Baxter, G.M.; Kawcak, C.E.
Journal: Equine Veterinary Journal

Arthroscopic injection of corticosteroids into the fibrous tissue of subchondral cystic lesions of the medial femoral condyle in horses: A retrospective study of 52 cases (2001-2006) Reasons for performing study: There are no published results of subchondral cystic lesions (SCLs) in the medial femoral condyle (MFC) treated with arthroscopic injection of corticosteroids into the lining of the cyst. Objectives: 1) To determine the success rate for treatment of SCLs in the MFC with arthroscopic injection of the fibrous tissue of the cyst with corticosteroids.

Authors: Jonathan D. C. Anderson, BVM&S; Larry D. Galuppo, DVM, DACVS; Bradd C. Barr, DVM, DACVP; Sarah M. Puchalski, DVM, DACVR; Melinda
Journal: Journal of the American Veterinary Medical Association

Objective—To describe clinical and scintigraphic abnormalities in horses with a bone fragility disorder. Design—Retrospective case series. Animals—16 horses with scintigraphic evidence of multiple sites of increased radiopharmaceutical uptake (IRU). Procedures—Medical records were reviewed for information on signalment; history; clinical, clinicopathologic, and diagnostic imaging findings; and treatment. Follow-up information was obtained through telephone interviews with owners. Results—Horses ranged from 4 to 22 years old; there were 8 castrated males and 8 females.