Ultrasonographic Anatomy of the Fetlock in Draught Horses

To describe the normal sonographic images of the soft tissues of the dorsal andpalmar aspects of the fetlock region in the draught horses.design- descriptive study.animals- five clinically and radiographically normal draught male horses were used duringthis study.procedures- horses were examined both radiographic and ultrasound ante mortem and postmortem. based on the proximal sesamoid bones the fetlock region was divided into threezones. zone i (psb1) located 4 cm above the sesamoid bone. zone ii (psb ii) located at thelevel of the sesamoid bones. zone iii (psbiii) located distal to the sesamoid bones.measurements of tendon and ligament structures for the three zones were determined bymeans of electronic calipers. cross transverse sections for the structures of the three zoneswere identified.results and conclusion- the fetlock joint is surrounded by soft and hard tissue structures.the gross anatomical, radiographic and ultrasonographic images were studied. theultrasound images of the palmar and dorsal aspects were identified and reviewed. theechogenic patterns of the three zones were evaluated. this study provides a detailedknowledge on the normal ultrasound anatomy and measurements of the tendon and ligamentsin the three zones.clinical relevance- this study is a useful value in the diagnosis of fetlock lameness underclinical conditions.