Reliability of preoperative measurement with standardized templating in Total Knee Arthroplasty

Abstract

Agreement between the preoperative measurement with standardized acetate templates and the prosthetic size implanted can be considered satisfactory. We thus conclude it is a reproducible technique.

Fallacies of CT based component size prediction in total knee arthroplasty – Are patient specific instruments the answer?

“…Similarly, most of the studies which have investigated the component size prediction in TKA have used MRI based or 2-dimensional templating. 1,12,15,18,20,21 The possible reason for the higher accuracy achieved by the authors as compared to the present study could be the difference in the technique used for jig manufacturing (MRI versus CT). It has been predicted that the CT based jigs may not be able to delineate the cartilage and also have a tendency to magnify the knee sizes predicted as compared to the MRI based jigs.…”

“…can also contribute to decreasing the armamentarium of the tibial and femoral implants which are required in the operating room (OR) by determining the size which may be needed. 12,13 This can assist in minimizing the OR traffic, which is one of the prime concerns of an arthroplasty set up. Also, this can have a bearing in small volume arthroplasty setups, where the whole gamut of the available tibial and femoral component sizes is not available.…”

Computed tomography based 3D printed patient specific blocks for total knee replacement

“…Preoperative templating in TKR has been used in the past to decrease the operating room (OR) instruments and trial trays 6,7 Preoperative templating can minimize the movement of personnel in the OR, by predicting the size of the components of the femur and tibia. In a low volume replacement set up, preoperative templating can help the surgeon know if there are unusual femoral or tibial component sizes which may be needed.…”

Planning on CT-Based 3D Virtual Models Can Accurately Predict the Component Size for Total Knee Arthroplasty

“…3,6,7 Preoperative templating can also contribute to decrease the volume of tibial and femoral implants, required in the operating room, by anticipating sizes needed for the procedure. 8,9 There are differences between the analog and digital planning, and there is no consensus on the best system. [10][11][12][13] The most important finding of the present study was that the preoperative planning, approved by the surgeon with the MyKnee CT-based patient-specific cutting block system, correctly predicted the size of the femoral component in over 95% of cases and the tibial component in over 92% of cases, with high concordance.…”