Otosclerosis

Question 1

ESSENCE

Answer 1

There is remodelling of small bones in middle ear, leading to conductive hearing loss

Combination of environmental and genetic factors

Question 2

CLINICAL FEATURES

Presentation

Answer 2

• Patient <40 years with unilateral or bilateral
  
  • Hearing loss
  • Tinnitus
• Usually affects lower pitched sounds

Question 3

CLINICAL FEATURES

Examination results

Answer 3

• Otoscopy
  
  • Normal
• Weber’s test
  
  • Normal if bilateral, if unilateral sound is louder in more affected ear
• Rinne’s test
  
  • Shows conductive hearing loss of the affected ear