In dogs and cats, sesamoid bones are associated with which joint?

Sesamoid bones are small, round bones that are embedded in tendons and are typically found at points where a tendon passes over a joint. In dogs and cats, sesamoid bones play an important role in the function and mechanics of specific joints, particularly in reducing friction and providing structural support.

The joint between the metacarpal bone and the first phalanx, commonly referred to as the metacarpophalangeal joint, is specifically associated with sesamoid bones. In this case, there are two sesamoid bones located at this joint: one on the palmar side of each metacarpal. These bones aid in stabilizing the joint and are crucial for proper function, especially during activities that involve weight-bearing and movement of the digits.

While the other options mention significant joints in the appendicular skeleton, they are not specifically associated with sesamoid bones. For instance, the joint between the radius and ulna primarily allows for rotational movement and does not involve the presence of sesamoids. Similarly, the stifle joint (the joint between the femur and tibia) has its own unique structures, such as menisci and ligaments, but it does not prominently feature sesamoid bones like the