Patient-Specific Instrumentation in Arthroplasty
PSI uses preop MRI/CT to fabricate custom cutting jigs. Goal: improve accuracy, reduce OR time/inventory; evidence shows marginal accuracy gains without clear functional benefit. Limitations: cost, imaging/manufacture time, error propagation if imaging off. Best reserved for complex deformity or limited instrument settings. Distinguish PSI (custom guides) from custom implants (rare).
Practised by MCQ
11What is the primary goal of Patient-Specific Instrumentation (PSI) in arthroplasty?
mcqWhich of the following is a limitation of Patient-Specific Instrumentation (PSI)?
mcqWhich imaging modality is commonly used for the fabrication of PSI for knee arthroplasty?
mcqWhat is a key difference between Patient-Specific Instrumentation (PSI) and custom implants?
mcqWhat is a major reason why PSI does not consistently improve alignment accuracy in TKA?
mcqWhich of the following systems uses CT imaging to manufacture custom cutting jigs?
mcqWhat is one of the claimed advantages of using PSI in arthroplasty?
mcqIn the context of PSI, what does the term 'seating error' refer to?
mcqWhich of the following has been noted in studies regarding the operative time when using PSI?
mcqWhat is the primary imaging modality used by the Visionaire system for PSI?
mcqWhich of the following is true regarding the clinical benefits of PSI in total knee arthroplasty?