Table 2

- Timeline table for case 2.

Date	Relevant past medical history and interventions
2019	60-year-old man diagnosed as case of bilateral otosclerosis underwent left stapedotomy and requested surgery on the other side
	Summaries from initial and follow-up visit	Diagnostic testing	Interventions
2019	Presented with decreased hearing on the right ear	Mild to moderate, up to 3 kHz, slopping to severe mixed hearing loss, and no response at 8 kHz. (31/01/2019)	Consented for right end aural stapedotomy
February 2019	Confirmed hearing loss and taken to the operating room for right stapedotomy	IIntra-operative examination: Confirmed the diagnosis	During the surgery, the incus was dislocated accidently, thereafter intraoperative decision was made to perform MS
April 2020	Postoperative: Patient reported improvement of hearing No other otological complaint	Postoperative PTA: significant air bone gap improvement from around 40 dB to 0 dB (23/4/2019)	Patient was satisfied No further intervention