Physiology & Biochemistry · single question
A patient with pre-auricular pain, 45mm opening, and 'pop-and-click' most likely has:
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Correct answer: B. Internal derangement with reduction
The 'pop-and-click' is pathognomonic for internal derangement with reduction u2014 the disc displaces anteriorly but recaptures during opening. Normal mouth opening (45mm) confirms reduction is occurring. MPDS is a muscular disorder without clicking.
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