Desmotomy, specifically referring to an inferior check ligament desmotomy in horses, is a surgical procedure that aims to improve limb movement by lengthening the deep flexor tendon unit.
Understanding Inferior Check Ligament Desmotomy
The inferior check ligament plays a critical role in supporting the deep digital flexor tendon (DDFT) in horses. When this ligament is too tight, it can restrict the DDFT, leading to issues such as:
- DDFT Contracture: This condition, particularly in foals, results in an abnormal posture where the toe points outwards and the heel doesn't reach the ground correctly.
- Limited Limb Movement: The tight ligament restricts the natural flexibility and range of motion in the horse's lower limb.
How Desmotomy Helps
Inferior check ligament desmotomy involves surgically cutting the inferior check ligament. This procedure:
- Increases Tendon Length: By cutting the ligament, more length is provided to the deep flexor tendon unit.
- Corrects Abnormal Posture: The increased length allows the toe to align correctly and the heel to move to its normal position. This helps in cases of DDFT contracture.
- Improves Limb Flexibility: The procedure enhances the overall flexibility and movement of the lower limb.
When is Desmotomy Considered?
According to the provided reference, this surgical procedure should always be considered in:
- Cases of DDFT contracture in foals.
- Cases of DDFT contracture in adult horses.
Desmotomy as a Solution
Desmotomy is a treatment to improve the mechanics of a horse’s leg movement. It is not preventative; it is a treatment for a problem.
- It aims to correct the position and function of the lower limb by addressing a tight check ligament.
- It is a targeted intervention to improve the performance and comfort of the horse.
