Table 1: Annual surgical volumes at London Health Sciences Centre and St. Joseph's Health Care

Procedure	No. of procedures each year	No. of instruments on extant trays	No. of instruments on proposed trays	Difference	Percent reduction
Septoplasty	197	84	33	51	61
Tonsillectomy	336	34	13	21	62
Skin cancer excision	220	43	27	16	37
Endoscopic sinus surgery	505	100	36	64	64
Septorhinoplasty	190	142	60	82	58