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A variety of methods are described for managing distal limb flexural deformities in the foal, including intravenous oxytetracycline and splint or cast use. This case series describes a novel technique that creates an ‘active tension‐extension splint’ by wiring the toe into a custom‐made fibreglass splint and therefore into active extension. A dorsal fibreglass splint is made by halving a cast that is set around the affected leg with padding underneath it, so that it is sculpted to a more appropriate anatomical shape. Cerclage wire is placed through the toe and the dorsal aspect of the splint, then tightened to pull the limb into active extension. Foals with distal limb flexural deformities that were treated in this way were followed up by examination of hospital records and telephone questionnaire. Records were examined for 13 foals treated between 2004 and 2010. One foal developed septic osteitis of the distal phalanx due to suspected laminar penetration; other post operative complications seen were bandage sores and minor cosmetic scarring. Out of 10 foals where follow‐up by questionnaire was available, 8 had complete resolution of their deformity following active tension‐extension splinting, one required inferior check ligament desmotomy for complete correction and one had carpal flexural deformities that did not resolve. All that survived to adulthood are sound and have achieved their intended purpose. This previously unpublished technique using a wire through the toe to create an active tension‐extension splint has a high success rate for correction of congenital flexural deformities affecting the distal interphalangeal and metacarpo‐/metatarsophalangeal joints in the foal. The majority of post operative complications are minor and easily managed. This is a simple technique that can improve the management of neonatal distal limb deformities both in a hospital situation and for equine practitioners in the field. 相似文献
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Trabecular and subchondral bone development of the talus and distal tibia from foal to adult in the warmblood horse
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B. M. C. Gorissen C. F. Wolschrijn B. van Rietbergen L. Rieppo S. Saarakkala P. R. van Weeren 《Anatomia, histologia, embryologia》2018,47(3):206-215
Horses are precocial animals and able to stand and walk within hours after birth. To cope with associated loading, intrauterine bone development has shown to be anticipative. This study provides further insight into the post‐natal development of structurally important features of trabecular and subchondral bone of the talus and sagittal ridge of the tibia of warm‐blooded horses. In all areas studied, the average bone volume fraction showed a gradual increase over time, which was the result of a significant increase in trabecular thickness, without significant changes in the degree of anisotropy. Similar to the mineralised part of the bone, collagen content, measured as average retardation using polarised light microscopy, increased significantly, but the degree of anisotropy of the collagen type I network did not. At birth, the subchondral bone layer had a more trabecular aspect, gradually changing to an even surface with only a few vascular canals at an age of 2 months. Presented results indicate the necessity for a stronger structure, but not for a different structural design after birth, providing further evidence for anticipatory bone development in the horse. More knowledge about the strategies used to cope with mechanical loading after birth might be helpful in understanding the developmental bone and joint diseases. 相似文献