Saddle joint occurs between

Options

A. Carpal and first metacarpal
B. Femur and pelvic girdle
C. All the vertebrae
D. Phalanges

Answer

**Step-by-Step Solution:**

1. **Understanding the Saddle Joint**: A saddle joint is a type of synovial joint that allows movement in two planes. It is characterized by two bones that fit together like a saddle on a horse, where one bone has a concave surface and the other has a convex surface.

2. **Identifying the Location of Saddle Joints**: The saddle joint is specifically found between the carpals (wrist bones) and the metacarpals (bones of the hand). The most notable example of a saddle joint in the human body is the carpometacarpal joint of the thumb.

3. **Excluding Other Joints**: It is important to differentiate saddle joints from other types of joints. For instance, phalanges (finger bones) do not form saddle joints, and the vertebrae and the femur with the pelvic girdle primarily consist of ball-and-socket joints, not saddle joints.

4. **Conclusion**: Therefore, the saddle joint occurs between the carpals and metacarpals.

**Final Answer**: The saddle joint occurs between the carpals and metacarpals.

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