The space of Prussak lies between which two structures?
- A Tympanic membrane and handle of malleus
- B Lateral surface of the pars flaccida and the neck/lateral process of malleus ✓
- C Tegmen tympani and head of malleus
- D Scutum and short process of incus
Correct answer: B. Lateral surface of the pars flaccida and the neck/lateral process of malleus
Explanation
Prussak's space (superior recess of the tympanic membrane) is bounded laterally by the pars flaccida of the tympanic membrane, medially by the neck of the malleus, superiorly by the lateral malleolar ligament, and inferiorly by the lateral process of the malleus. It is the most common site of origin of primary acquired attic cholesteatoma because the pars flaccida is unsupported and prone to retraction pocket formation.
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.