Hammer sound elicited tinnitus in car body repair worker cured by stapedial tenotomy - A case report.

Abnormal auditory sensations or tinnitus caused by abnormal middle ear muscle contraction are extremely rare and uncomfortable for patients. A 67-year-old man who performed paint and body work for cars presented at our hospital with complaint of an audible and annoying abnormal sound that was synchronous with the striking of his hammer against the metal of the car body during his work. The patient reported that the sound was audible of left ear with a split-second delay after his hammer struck the metal. Preoperative subjective and objective testing failed to reveal any abnormal findings in our case. The patient's symptom was successfully cured by selective transection of the stapedius tendon. The characteristic nature of tinnitus with a split-second delay after striking the metal helped our diagnosis and method of intervention in this case.