The SDF and DDF check ligaments prevent overextension of which joints?

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Multiple Choice

The SDF and DDF check ligaments prevent overextension of which joints?

Explanation:
The SDF and DDF check ligaments limit how far the flexor tendons can pull the limb into extension as the leg bears weight. They are positioned to restrict movement mainly at the joints of the lower limb that the tendons cross—the carpal (wrist) joint and the pastern joints. By anchoring the tendons, these ligaments prevent hyperextension of the carpal region and the pastern, acting as safety restraints. The fetlock joint is stabilized by other structures in the suspensory system, so the checks don’t primarily serve that joint.

The SDF and DDF check ligaments limit how far the flexor tendons can pull the limb into extension as the leg bears weight. They are positioned to restrict movement mainly at the joints of the lower limb that the tendons cross—the carpal (wrist) joint and the pastern joints. By anchoring the tendons, these ligaments prevent hyperextension of the carpal region and the pastern, acting as safety restraints. The fetlock joint is stabilized by other structures in the suspensory system, so the checks don’t primarily serve that joint.

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