Malleus handle probe: a middle ear diagnostic procedure

Area of Science:

• Otolaryngology
• Diagnostic Imaging
• Middle Ear Pathologies

Background:

• Middle ear inflammation and effusion (OME) diagnosis relies on methods like impedance audiometry and pneumatic otoscopy.
• The tensor tympani muscle's (TTM) role in middle ear reflexes and inflammation is not fully understood.
• Accurate assessment of middle ear conditions is crucial for effective treatment.

Observation:

• Manual probing of the malleus handle (MH) in 477 patients revealed a protective middle ear reflex.
• The degree of MH retraction indicated three stages of progressive middle ear inflammation.
• Mechanical pressure gauge readings correlated with finger pressure estimations in 202 ears.

Findings:

• Malleus handle probing achieved 92% prediction accuracy for myringotomy findings, significantly higher than 60% with impedance audiometry.
• Sectioning TTM tendons in ten children with persistent OME resulted in benefits for seven.
• Malleus handle probing alone detected attic loculation of OME in 5.6% of cases.

Implications:

• Malleus handle probing is a valuable, complementary diagnostic tool for middle ear conditions, extending diagnostic capabilities to TTM activity.
• This method offers improved accuracy in diagnosing OME and identifying potential therapeutic targets like the TTM.
• Further research into TTM function and its therapeutic modulation in OME is warranted.