Diagnosis and prediction of cervical vertebral malformation in thoroughbred foals based on semi-quantitative radiographic indicators.

This research is about a study conducted on thoroughbred foals to predict and diagnose cervical vertebral malformation (CVM), using semi-quantitative radiographic analysis. A total of 132 foals were involved in the five-year study and a scoring system was developed based on the radiographic findings to predict the presence of CVM.

Research Methodology

• The study was conducted on a central Kentucky Thoroughbred stud farm over a period of five years.
• Out of 132 thoroughbred foals, lateral radiographs of the neck (cervical vertebrae) were taken from 70 standing foals as a part of the evaluation.
• The radiographs were then semi-quantitatively assessed and numerically scored based on the presence of several indicators – stenosis (narrowing) of the vertebral canal, enlargement of the physeal growth plates (areas where new tissues proliferates for bone growth), caudal extension of the dorsal border of the vertebral canal’s opening, angular fixation, delayed ossification (bone formation), and degenerative joint disease.
• Based on these individual scores, each foal was given a total CVM score.

Key Findings

• All the foals included in the study were continuously monitored for any clinical symptoms of neurological disease related to their cervical vertebrae.
• Foals who showed no clinical signs of CVM had maximum total CVM scores averaging around 5.7, with a standard deviation of 2.8.
• Foals who were affected with CVM had much higher maximum total CVM scores, averaging around 17.0, again with a standard deviation of 2.8.

Conclusion and Implications

• The main conclusion drawn from the study suggests that the overall CVM score determined from the radiographic study can be a reliable, non-invasive, and cost-effective method for diagnosing and predicting the presence of CVM in thoroughbred foals up till one year of age.
• This scoring system would aid in detecting the degenerative conditions in equine species early on, allowing for timely treatment and potentially improving the prognosis for these animals.