Computed tomography identifies the proximodorsomedial subchondral bone of equine central tarsal bones as a predilection site for sclerosis, demineralisation and associated fractures.
Abstract: The distribution pattern of central tarsal bone (CTB) changes has not been described, except for slab- and dorsomedial-plantarolateral fractures. Objective: To describe CTB changes in CT and document their distribution and associations. Methods: Retrospective case series. Methods: Standing and recumbent tarsal CT studies from 94 clinical cases were retrospectively evaluated. General case information, degree of sclerosis (none-severe), lesions (demineralisation, cystoid, fissure/fracture) and their location were recorded, dividing CTBs into 8 regions. Results: Eighty five of 94 tarsi showed at least one region of moderate to severe sclerosis, of which 90% affected the dorsomedial region. The prevalence of lesions was significantly associated with higher degrees of sclerosis (p = 0.04) at this site. Of 32 demineralising lesions, 21 were in the proximal subchondral bone dorsomedially. Twenty-four CTBs showed fissures/fractures; 19/24 were in a dorsomedial-plantarolateral direction, and 17/19 were associated with demineralisation. Of five fissures/fractures with different configurations, none had associated demineralisation. There were 27 cyst-like lesions, 21/27 in the distal subchondral bone, of which almost half (13/27) located medially. Conclusions: Retrospective design; heterogeneous, warmblood-oriented population; no clinical correlation of findings nor histological confirmation of described changes. Conclusions: Given the links between sclerosis, demineralisation and fissures/fractures, the dorsomedial proximal subchondral bone plate of the CTB must be scrutinised both in CT and radiography.
© 2025 The Author(s). Equine Veterinary Journal published by John Wiley & Sons Ltd on behalf of EVJ Ltd.
Publication Date: 2025-07-24 PubMed ID: 40703020DOI: 10.1111/evj.70001Google Scholar: Lookup
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APA
Campana S, Dittmann M, Kircher P, Donati B.
(2025).
Computed tomography identifies the proximodorsomedial subchondral bone of equine central tarsal bones as a predilection site for sclerosis, demineralisation and associated fractures.
Equine Vet J.
https://doi.org/10.1111/evj.70001 Publication
Researcher Affiliations
- Clinic for Diagnostic Imaging, Vetsuisse Faculty, University of Zurich, Zürich, Switzerland.
- Department of Livestock Sciences, Research Institute of Organic Agriculture FiBL, Frick, Switzerland.
- Clinic for Diagnostic Imaging, Vetsuisse Faculty, University of Zurich, Zürich, Switzerland.
- Clinic for Diagnostic Imaging, Vetsuisse Faculty, University of Zurich, Zürich, Switzerland.
References
This article includes 25 references
- Murray RC, Dyson SJ, Weekes JS, Short C, Branch MV. Scintigraphic evaluation of the distal tarsal region in horses with distal tarsal pain. Vet Radiol Ultrasound 2005;46(2):171–178.
- Lischer CJ, Auer JA. Tarsus. .
- Gabel AA. Lameness caused by inflammation in the distal hock. Vet Clin North Am Large Anim Pract 1980;2(1):101–124.
- Dyson S. Lameness associated with mineralization of the central tarsal bone and a small osseous cyst‐like lesion in two sport horses. J Equine Vet Sci 2013;33(1):51–56.
- Zimmerman M, Schramme M, Eberlé O, Drumond B, Carter J, Carter‐Arnold J. Low‐field MRI findings and follow‐up of central tarsal bone fractures in four non‐racehorses. Equine Vet Educ 2023;35(2):e112–e120.
- Barrett MF, Selberg KT, Johnson SA, Hersman J, Frisbie DD. High field magnetic resonance imaging contributes to diagnosis of equine distal tarsus and proximal metatarsus lesions: 103 horses. Vet Radiol Ultrasound 2018;59(5):587–596.
- Gunst S, Del Chicca F, Fürst AE, Kuemmerle JM. Central tarsal bone fractures in horses not used for racing: computed tomographic configuration and long‐term outcome of lag screw fixation. Equine Vet J 2016;48(5):585–589.
- Knuchell JA, Spriet M, Galuppo LD, Katzman SA. Fracture of the central tarsal bone in nonracehorses: four cases. Vet Radiol Ultrasound 2016;57(4):403–409.
- Raes E, Bergman HJ, Van Ryssen B, Vanderperren K, Stock E, Saunders JH. Computed tomographic features of lesions detected in horses with tarsal lameness. Equine Vet J 2014;46(2):189–193.
- Redding WR. The Tarsus. .
- Vanderperren K, Raes E, Bree HV, Saunders JH. Diagnostic imaging of the equine tarsal region using radiography and ultrasonography. Part 2: bony disorders. Vet J 2009;179(2):188–196.
- Baird DH, Pilsworth RC. Wedge‐shaped conformation of the dorsolateral aspect of the third tarsal bone in the Thoroughbred racehorse is associated with development of slab fractures in this site. Equine Vet J 2001;33(6):617–620.
- Murphey ED, Schneider RK, Adams SB, Santschi EM, Stick JA, Ruggles AJ. Long‐term outcome of horses with a slab fracture of the central or third tarsal bone treated conservatively: 25 cases (1976–1993). J Am Vet Med Assoc 2000;216(12):1949–1954.
- Kelleher ME, Charles EM, Werpy NM. What is your diagnosis? Acute lameness. J Am Vet Med Assoc 2011;238(8):977–978.
- Bolt DM, Williams J, Burba DJ. Fracture of the small tarsal bones and luxation of the tarsal joints in horses. Compend Contin Educ Pract Vet 2003;25(4):310–315.
- Dabareiner RM, Carter GK, Dyson SJ. The Tarsus. .
- Laverty S, Stover SM, Bélanger D, O'Brien TR, Pool RR, Pascoe JR. Radiographic, high detail radiographic, microangiographic and histological findings of the distal portion of the tarsus in weanling, young and adult horses. Equine Vet J 1991;23(6):413–421.
- Kelmer G. Computed tomography assisted repair of a central tarsal bone slab fracture in a horse. Equine Vet Educ 2008;20(6):284–287.
- Barneveld A, van Weeren PR. Early changes in the distal intertarsal joint of Dutch warmblood foals and the influence of exercise on bone density in the third tarsal bone. Equine Vet J 1999;31(S31):67–73.
- Murray RC, Branch MV, Dyson SJ, Parkin TD, Goodship AE. How does exercise intensity and type affect equine distal tarsal subchondral bone thickness?. J Appl Physiol (1985) 2007;102(6):2194–2200.
- Branch MV, Murray RC, Dyson SJ, Goodship AE. Is there a characteristic distal tarsal subchondral bone plate thickness pattern in horses with no history of hindlimb lameness?. Equine Vet J 2005;37(5):450–455.
- Branch MV, Murray RC, Dyson SJ, Goodship AE. Alteration of distal tarsal subchondral bone thickness pattern in horses with tarsal pain. Equine Vet J 2007;39(2):101–105.
- Faulkner JE, Joostens Z, Broeckx BJG, Hauspie S, Mariën T, Vanderperren K. Follow‐up magnetic resonance imaging of sagittal groove disease of the equine proximal phalanx using a classification system in 29 non‐racing sports horses. Animals Basel 2023;14(1):34.
- Peloso JG, Cohen ND, Vogler JB, Marquis PA, Hilt L. Association of catastrophic condylar fracture with bony changes of the third metacarpal bone identified by use of standing magnetic resonance imaging in forelimbs from cadavers of Thoroughbred racehorses in the United States. Am J Vet Res 2019;80(2):178–188.
- Jeffcott LB, Kold SE, Melsen F. Aspects of the pathology of stifle bone cysts in the horse. Equine Vet J 1983;15(4):304–311.
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