Neurectomy of the deep branch of the lateral plantar nerve can cause neurogenic atrophy of the muscle fibres in the proximal part of the suspensory ligament (M. interosseous III).

This research reveals that the surgical removal of the deep branch of the lateral plantar nerve in a horse led to significant shrinkage and unhealthy changes in the muscle fibers located in the upper part of the suspensory ligament, a condition known as neurogenic atrophy.

Research Methodology

• The study was performed on a single healthy, adult horse.
• The deep branch of the lateral plantar nerve on the right side was surgically removed via neurectomy.
• After six weeks from the operation, the horse was euthanized.
• Following euthanasia, the suspensory ligaments from both hind legs were collected. One of these ligaments had been affected by the neurectomy, serving as the treatment sample, while the ligament from the other leg functioned as a control.

Measurements and Evaluation

• The researchers measured the cross-sectional area of the muscle found in the upper part of the suspensory ligament, also known as the M. interosseous III muscle.
• The measurements and evaluation of possible abnormalities in the muscle’s structure were done blindly to ensure unbiased results.

Findings of the Study

• There was a noticeable difference in the cross-sectional area of the M. interosseous III muscle between the control and the treated ligament.
• The muscle fibers in the ligament affected by the neurectomy exhibited significant neurogenic atrophy, a condition characterized by muscle wastage and alteration due to nerve damage.

Implications of the Research

• The research provides further understanding of the potential repercussions of neurectomy of the deep branch of the lateral plantar nerve in horses, particularly on the health and integrity of the suspensory ligament’s muscle structure.
• The results could influence surgical decisions and aftercare strategies in equine veterinary medicine, with a focus on preventing severe muscle wastage and structural abnormalities in key ligaments after nerve removal procedures.