title: Patient-specific versus conventional instrumentation for total knee arthroplasty: peri-operative and cost differences.
abstract: The role of patient-specific instrumentation in total knee arthroplasty (TKA) is yet to be clearly defined. Current evidence evaluating peri-operative and cost differences against conventional TKA is unclear. We reviewed 356 TKAs between July 2008 and April 2013; 306 TKAs used patient-specific instrumentation while 50 had conventional instrumentation. The patient-specific instrumentation cohort averaged 20.4 min less surgical time (P < 0.01) and had a 42% decrease in operating room turnover time (P = 0.022). At our institution, the money saved through increased operating room efficiency offset the cost of the custom cutting blocks and pre-operative advanced imaging. Routine use of patient-specific TKA can be performed with less surgical time, no increase in peri-operative morbidity, and at no increased cost when compared to conventional TKA.
authors: Department of Orthopaedics and Rehabilitation, Oregon Health & Science University, Portland, Oregon 97239-3098.
authors: Alexander M
authors: AM
authors: DeHaan
authors: Department of Orthopaedics and Rehabilitation, Oregon Health & Science University, Portland, Oregon 97239-3098.
authors: Jacob R
authors: JR
authors: Adams
authors: Department of Orthopaedics and Rehabilitation, Oregon Health & Science University, Portland, Oregon 97239-3098.
authors: Matthew L
authors: ML
authors: DeHart
authors: Department of Orthopaedics and Rehabilitation, Oregon Health & Science University, Portland, Oregon 97239-3098.
authors: Thomas W
authors: TW
authors: Huff
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000191:economics / Q000295:instrumentation*; D005260:Female; D006801:Humans; D007592:Joint Diseases / Q000601:surgery*; D007719:Knee Joint / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D061646:Operative Time; D025321:Surgery, Computer-Assisted / Q000191:economics*
keywords: cost-effectiveness; custom cutting blocks; patient-specific instrumentation; patient-specific total knee arthroplasty; total knee arthroplasty