Pathological Analysis of Bone Fractures in Race Horses.

Kaneko, Mikihiro; Oikawa, Masa-aki; Yoshihara, Toyohiko

doi:10.1292/jvms.55.181

Cited by 17 publications

(22 citation statements)

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“…As a result of the movement load, bone tissue hardness of the carpus and proximal sesamoid increased, thereby indicating that the bones had become more fragile [12,13]. It appears that factors contributing to distal bone fracture are focal osteopetrosia or osteosclerosis due to calcium movement [4,5], and generating factors in proximal bone groups with fractures are fatigue and stress fractures. These fractures might be associated with increased focal bone porosity which decreases the stiffness of the bone [7].…”

Section: Discussionmentioning

confidence: 99%

Distribution of Thyroid Gland C Cells at Fractures in Thoroughbred Racehorses.

Yoshikawa

Oishi

Ueki

et al. 2002

JES

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Section: Discussionmentioning

confidence: 99%

Distribution of Thyroid Gland C Cells at Fractures in Thoroughbred Racehorses.

Yoshikawa

Oishi

Ueki

et al. 2002

JES

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“…The metacarpophalangeal joint and corresponding bones are structures which are frequently damaged in the limbs of racehorses [2]. The primary structures involved are the third metacarpal bone (McIII), first phalanx, and the proximal sesamoid bones [2].…”

Section: -Note-mentioning

confidence: 99%

Section: -Note-mentioning

confidence: 99%

“…The primary structures involved are the third metacarpal bone (McIII), first phalanx, and the proximal sesamoid bones [2]. Of these, longitudinal fractures of the distal part of McIII are suggested to occur from subchondral cancellous bone sclerosis [2]. The stiffening process was likely reflected by the increases of bone mass,i.e., bone density [6] and bone mineral content [5].…”

Section: -Note-mentioning

confidence: 99%

“…DEXA determines the bone mineral content in grams and the area, in cm 2 , of calcified tissue for the subject. Bone mineral density (BMD; g/cm 2 ) as a measured value of mineral content is calculated by dividing the bone mineral content by the area.…”

Section: -Note-mentioning

confidence: 99%

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In Vitro Measurement of the Bone Mineral Density of the Third Metacarpal Bone by Dual Energy X-Ray Absorptiometry in Racehorses-Comparison with Single Photon Absorptiometry.

Oikawa

Shimazu

1996

JES

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Bone mineral density (BMD, g/cm 2 ) in the distal portion of the third metacarpal bone (McIII) of racehorses was measured by a dual energy x-ray absorptiometry system (DEXA; ALOKA Co, Ltd., Tokyo, Japan) Although there are several techniques to measure bone mineral content in vivo or in vitro, photon absorptiometry using 241 Americium as a source of monoenergetic (60 KeV) photons (SPA) has been used in horses [5]. SPA has reported that the value of the McIII measured by SPA were well correlated with the weight of ashed McIII, and the reproducibility of the value was high, thus being a precise and accurate non-invasive in vitro method of quantifying bone mineral content in equine McIII [5].Dual energy x-ray absorptiometry (DEXA), which is a relatively new photon absorptiometry, uses two energies of x-rays as the photon source. Unlike SPA, DEXA avoids the needs for the limb to be immersed or surrounded by soft-tissue-equivalent-medium, provides images not available by SPA (so that a region of interest can be set in a fixed position while observing images and ensuring the position) and has been reported to be a quick and reliable method for determining bone mineral content [3]. The principle of the two techniques described above is to scan a bone with a narrow beam of singleenergy photons in SPA or dual-energy photons in DEXA and measure the degree of attenuation of the beam by bone, relative to its attenuation by tissue, by means of a detector system. A direct relationship is established between the number of extra photons absorbed and bone mineral content. The objective of this study was to investigate the correlation of bone mineral content measured by SPA and that determined by DEXA for applying DEXA as the method of quantifying mineral content in vitro of the distal portion of McIII in racehorses.Measurements of mineral contents of the McIII in racehorses was made using DEXA (DCS-3000; ALOKA

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Diagnosis and Management of Lameness in the Horse

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Pathological Analysis of Bone Fractures in Race Horses.

Cited by 17 publications

References 1 publication

Distribution of Thyroid Gland C Cells at Fractures in Thoroughbred Racehorses.

Distribution of Thyroid Gland C Cells at Fractures in Thoroughbred Racehorses.

In Vitro Measurement of the Bone Mineral Density of the Third Metacarpal Bone by Dual Energy X-Ray Absorptiometry in Racehorses-Comparison with Single Photon Absorptiometry.

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