Which type of synovial joint describes the incudostapedial articulation?
- A Saddle joint
- B Ball and socket joint ✓
- C Plane (gliding) joint
- D Hinge joint
Correct answer: B. Ball and socket joint
Explanation
The incudostapedial joint is a true synovial ball and socket joint, formed by the spherical lenticular process of the incus long process fitting into the concave head of the stapes. The incudomalleolar joint, by contrast, is a saddle type synovial joint. This distinction matters clinically because the incudostapedial joint is the most common site of traumatic ossicular disconnection in head injury.
Reference: Gray's Anatomy, 42nd ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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