Middle ear deformity in arthrogryposis multiplex congenita

Area of Science:

• Otolaryngology
• Genetics
• Developmental Biology

Background:

• Arthrogryposis multiplex congenita (AMC) is a rare congenital disorder characterized by multiple joint contractures.
• Otolaryngological abnormalities are observed in a notable percentage of AMC cases.
• Previously documented otologic findings in AMC predominantly include low-set ears.

Observation:

• This report describes a patient with AMC presenting with bilateral conductive hearing loss.
• The hearing loss is attributed to a rare and unusual middle ear malformation.
• This specific combination of AMC and middle ear anomaly is unprecedented in existing literature.

Findings:

• The case highlights an atypical otologic manifestation in AMC.
• The unusual middle ear deformity is identified as the cause of conductive hearing loss.
• This presentation expands the known spectrum of otolaryngological issues associated with AMC.

Implications:

• This case underscores the importance of comprehensive otologic evaluation in AMC patients.
• It suggests that middle ear malformations should be considered in the differential diagnosis of hearing loss in AMC.
• Further research may elucidate the genetic or developmental links between AMC and complex middle ear anomalies.