Describe the function of the long and short plantar ligaments in the hindlimb stay apparatus.

Describe the function of the long and short plantar ligaments in the hindlimb stay apparatus.

• A. They connect the femur to the tibia.
• B. They prevent knee flexion during stance.
• C. They act mainly to support the navicular bone directly.
• D. They support the hock and proximal tarsal joints, distributing weight and helping align the limb.

Answer: (D)

The long and short plantar ligaments act as a strong plantar support for the hindlimb’s tarsus. They run from the calcaneus across the underside of the tarsus to the proximal tarsal bones and the bases of the metatarsals, forming a plantar sling that stabilizes the hock and proximal tarsal joints. In the stay apparatus, this passive support keeps the hock extended and distributes weight across the tarsus during stance, reducing the need for constant muscular effort to stand. They help maintain proper limb alignment by linking the calcaneus with the proximal tarsal bones and metatarsals, rather than primarily restricting knee movement or solely supporting the navicular bone.

The long and short plantar ligaments act as a strong plantar support for the hindlimb’s tarsus. They run from the calcaneus across the underside of the tarsus to the proximal tarsal bones and the bases of the metatarsals, forming a plantar sling that stabilizes the hock and proximal tarsal joints. In the stay apparatus, this passive support keeps the hock extended and distributes weight across the tarsus during stance, reducing the need for constant muscular effort to stand. They help maintain proper limb alignment by linking the calcaneus with the proximal tarsal bones and metatarsals, rather than primarily restricting knee movement or solely supporting the navicular bone.