title: The angle-measuring device, a practical resource in high tibial osteotomy.
abstract: Thirty-two patients with medial gonarthrosis were subjected to high tibial osteotomy. In 16 knees the base of the osteotomy wedge was measured in mm using a caliper and in another 16 knees the angle-measuring device was used. The miscorrection in correlation to the aimed angle was in the first case 0.2 +/- 4.7 degrees, and in the second case 2.4 +/- 4.1 degrees varus undercorrection. The possible sources of error according to measurement of mechanical axis deviation angle of the knee, angle-measuring device and wedge measuring technique during surgery as well as laxity of knee and age-correlated need of overcorrection are pointed out. The angle-measuring device is an important tool especially in high tibial osteotomy of the knee.
authors.affiliation: Military Central Hospital, Helsinki, Finland.
authors.forename: P J
authors.initials: PJ
authors.lastname: Jokio
authors.forename: T S
authors.initials: TS
authors.lastname: Lindholm
mesh_terms: D000328:Adult; D000368:Aged; D001168:Arthritis / Q000601:surgery*; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000033:anatomy & histology* / Q000601:surgery*; D008297:Male; D008433:Mathematics; D008875:Middle Aged; D010003:Osteoarthritis / Q000601:surgery; D010027:Osteotomy / Q000295:instrumentation*; D013977:Tibia / Q000601:surgery*