The annular ligament attaches the footplate of the stapes to the oval window. Which type of joint best describes the stapes–oval window articulation?
- A Syndesmosis ✓
- B Synarthrosis (fibrous)
- C Amphiarthrosis (cartilaginous)
- D Synovial diarthrodial joint
Correct answer: A. Syndesmosis
Explanation
The stapes footplate is attached to the margins of the oval window by the annular ligament, which is a ring of elastic fibrous tissue — classifying this articulation as a syndesmosis. This flexible attachment allows piston-like motion while maintaining a seal. It is not a true synovial joint, which would be inappropriate at the oval window.
Reference: Dhingra Diseases of Ear, Nose and Throat, 7th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.