Periosteal transection and periosteal stripping for correction of angular limb deformities in foals.

The research article discusses a study conducted on 6 pony foals to measure the effect of periosteal transection and periosteal stripping on the correction of valgus deformities in their limbs. It was found that the surgical procedures notably increased bone growth and successfully corrected the valgus deformities.

Study Design and Procedure

• The researchers performed surgical procedures named hemicircumferential transection of the periosteum and periosteal stripping (HCTP and PS) on the limbs of the foals.
• These procedures were carried out on the medial side of a radius (principal thoracic limb) in each foal, while the opposite limb was used as a control.
• A month later, radiographs were taken of the limbs to work out the degree of deviation.
• Following the initial surgery, all tested foals developed a valgus deformity in the treated limb.
• To rectify these malformations, a second surgical procedure was implemented. This time, HCTP and PS was performed on the lateral aspect of the principal limb.
• In the 3 months following the second surgery, the deformities were corrected.

Observations and Finding

• To measure the difference in growth post-surgery, stainless-steel wires were inserted at certain points on the distal part of the radius in each foal’s leg.
• It was observed that there were no significant differences in the growth response to the HCTP and PS between the two groups of limbs.
• However, accelerated bone growth was observed in response to both surgical procedures.
• Following the first surgery, there was a noticeable increase in bone growth on the medial aspect, and likewise, an increase on the lateral aspect following the second surgery.
• Although these changes fell short of statistical significance, an increase in bone width at the growth plate was observed, due to the HCTP and PS procedures.

Conclusions and Discussions

• The researchers observed that the surgical procedures of periosteal transection and periosteal stripping did yield promising results, even though they were not statistically significant.
• The procedures led to an increase in bone growth on both the medial and lateral aspects of the bone which might contribute to the correction of angular limb deformities.
• The study suggests that these surgical procedures, although they need further research and understanding, could be potentially used for treating valgus and other similar limb deformities in young animals.