Cost-effectiveness of patient specific vs conventional instrumentation for total knee arthroplasty: A systematic review and meta-analysis

Figure 1 PRISMA-flowchart of searches in databases and registers. This figure was generated using the PRISMA-diagram provided in the PRISMA statement.

Figure 2 Scatter plot of total cost for patient specific instrumentation total knee arthroplasty and conventional instrumentation total knee arthroplasty per study. Total costs for patient specific instrumentation (PSI) total knee arthroplasty (TKA) and conventional instrumentation (CI) TKA per paper. This figure present costs without variance. The figure shows the heterogeneity of total cost per patient case for PSI TKA and CI TKA when compared in multiple different studies. When directly compared PSI TKA costs more per patient case in three[38,51,52] out of four[56] studies. PSI: Patient specific instrumentation; TKA: Total knee arthroplasty; CI: Conventional instrumentation; USD: United States Dollars.

Figure 3 Forrest plot of meta-analysis of total cost of patient specific instrumentation total knee arthroplasty compared to conventional instrumentation total knee arthroplasty. PSI: Patient specific instrumentation; TKA: Total knee arthroplasty; CI: Conventional instrumentation; USD: United States Dollars. This figure has been generated using Review Manager version 5.3 (2014).