A flexed dorso-palmar projection of the equine fetlock in demonstrating lesions of the distal third metacarpus

Pilsworth, R. C.; Hopes, R; Greet, TR

doi:10.1136/vr.122.14.332

Cited by 39 publications

(36 citation statements)

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“…In addition to the standard fetlock views, the flexed dorso-palmar and flexed dorso-35º-distal-palmaroproximal oblique projections are useful in diagnosing condylar fracture as PSB are elevated away from the condylar silhouette (O'Brien, Hornof and Meagher 1981;Pilsworth, Hopes and Greet 1988;Kawcak, Bramlage and Embertson 1995).…”

Section: 8 2 Diagnosismentioning

confidence: 99%

“…as well as special views (flexed dorsopalmar and lateral) of the fetlock (O'Brien, Hornof and Meagher 1981;Pilsworth, Hopes and Greet 1988). Despite commonly being found in fractured condyles, POD does not seem to be directly related to condylar fracture incidence in the majority of cases (Kaneko, Oikawa and Yoshihara 1993;Swindlehurst, Parkin and Morgan 2005).…”

Section: 8 8 Related Pathologiesmentioning

confidence: 99%

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Calcified tissue structure in the distal condyle of the third metacarpal bone in young Thoroughbred horses

Doube¹

2017

Preprint

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Aims: To determine improvements in third metacarpal (Mc3) condylar microanatomy attributable to preconditioning exercise. To investigate developmental causes of Mc3 condylar fracture.Methods: Twelve Thoroughbred horses were raised at pasture; six received preconditioning exercise from 10 days. Calcein labels were administered 19 and 11 days prior to euthanasia at 18 months. Six horses also received 2 seasons of race-training and were euthanised at 3 years. Slices were taken from the distal Mc3 condyle in the frontal and dorsal-and palmar-oblique frontal planes, scanned with DXA and macerated (frontal slices) or embedded in PMMA (oblique slices).Articular calcified cartilage (ACC) and subchondral bone (SCB) in oblique slices were imaged using confocal scanning light microscopy and quantitative backscattered electron scanning electron microscopy. ACC and SCB in the palmar slice lateral parasagittal grooves were imaged using µCT and nanoindentation tested. Results: Characteristic spatial variations in ACC and SCB histomorphometric parameters were present, none of which was significantly related to preconditioning exercise. Thickened, aberrantly mineralised ACC was found in 13/24 parasagittal grooves in the palmar slices and on the sagittal ridge of 4/12 dorsal slices of 18-month-old horses. Deep to thickened ACC, SCB had an open marrow structure, having not adopted the buttress morphology of the normal SCB plate. SCB in 3-year-old horses had incorporated early ACC defects as notches in parasagittal grooves and a hyaline cartilage island in a sagittal ridge. ACC was less stiff and SCB more stiff in affected than unaffected parasagittal grooves. Chondroclastic resorption in the parasagittal groove may be retarded as early as 3-6 months, possibly due to localised inhibition of Dr Naomi Boxall has guided me through the PhD experience; as one of the several PhD students 5 Attribution I knew while an undergraduate at Massey University she gave me insight into coping with the varied challenges that postgraduate study entails. Naomi also helped correct my sometimes dubious spelling, grammar and punctuation while preparing documents for submission. Jen Swindlehurst provided a number of images of equine metacarpals from her own studies that I was kindly allowed to use in my presentations. Jen's work also (conveniently) supported my own, and it was nice to have a colleague who was so intimately familiar with the problem of condylar fracture. Several of Professor

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Section: 8 2 Diagnosismentioning

confidence: 99%

Section: 8 8 Related Pathologiesmentioning

confidence: 99%

Calcified tissue structure in the distal condyle of the third metacarpal bone in young Thoroughbred horses

Doube¹

2017

Preprint

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“…Radiographs of the full metacarpus/metatarsus are mandatory for all cases of medial condylar fracture given the propensity for these fractures to extend into the proximal diaphysis, and the concerns of middiaphyseal comminution and the associated potential for catastrophic fracture. 47 A flexed dorsopalmar/plantar projection 48,49 is also recommended to evaluate the palmar/plantar aspect of the condyles for the presence of a comminuted fragment at the articular surface ( Fig. 16.7).…”

Section: Radiographymentioning

confidence: 99%

Metacarpus/metatarsus

Bassage¹

2014

Equine Sports Medicine and Surgery

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“…Radiographic projections have been developed to highlight specific areas of the MCPJ commonly associated with disease [9], such as the flexed dorsopalmar views to emphasise the palmar aspect of the distal condyles of the third metacarpal bone (McIII) [10] and elevated oblique views, to separate the subchondral bone of the palmar condyles of McIII from superimposed mineralised structures [7]. These projections aid the identification of pathology that is not visible on more conventional views, thereby improving sensitivity of radiography as a diagnostic tool for MCPJ disease [7,11,12].…”

Section: Introductionmentioning

confidence: 99%

Improved radiological diagnosis of palmar osteochondral disease in the Thoroughbred racehorse

Davis

Fan

Shen

et al. 2016

Equine Veterinary Journal

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A flexed dorso-palmar projection of the equine fetlock in demonstrating lesions of the distal third metacarpus

Cited by 39 publications

References 0 publications

Calcified tissue structure in the distal condyle of the third metacarpal bone in young Thoroughbred horses

Calcified tissue structure in the distal condyle of the third metacarpal bone in young Thoroughbred horses

Metacarpus/metatarsus

Improved radiological diagnosis of palmar osteochondral disease in the Thoroughbred racehorse

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