Radiographic localisation of the entheses of the equine stifle.

This research was focused on developing a detailed radiographic mapping of the tendons and ligaments in the horse’s stifle (or knee), which is used to better understand and assess injuries and lameness in horses.

Objective and Methods

• The main objective of the study was to create a comprehensive series of radiographs that clearly identify the origins and insertions of the tendons and ligaments in a horse’s stifle. This is an area where injury is a common cause of lameness, but which has not been thoroughly studied with radiographic projections so far.
• This study used a single horse’s tissues as a reference. For this, the researchers dissected and isolated key parts around the stifle area, including the proximal tibia and fibula, the distal femur, the patella, and the menisci. These parts were then radiographed in a series of projections, with an emphasis on the entheses, or points of attachment of a tendon or ligament to the bone, which were marked with barium paste to make them visible in the images.
• The radiographic landmarks for each enthesis were described in detail, and the most effective projections for visually assessing each structure were identified. This was done in a structured and methodical manner to ensure a thorough and accurate mapping.

Results

• The study successfully resulted in the production of 48 distinct radiographic images. These images provide clear and specific information about the best radiographic angles and positions to define each enthesis in the stifle.
• This comprehensive set of images provides a valuable tool for future radiographic studies of horse stifles. By comparing the images with those from injured or lame horses, veterinarians and scientists can better identify, understand, and potentially treat various musculoskeletal issues.

Conclusions

• Radiography is a common imaging method used to evaluate the stifle in horses. However, this study significantly enhances the potential usefulness of this approach by providing, for the first time, a detailed understanding and visual representation of the individual tendons and ligaments in the area.
• These images are expected to be particularly useful for identifying issues related to the entheses such as avulsions (where a ligament or tendon is torn away from the bone) and enthesopathies (diseases at the point where a tendon or ligament attaches to a bone).