Comparing the Accuracy of Radiographic Preoperative Digital Templating for a Second- Versus a First-generation THA Stem

Abstract

This study assessed the accuracy of preoperative digital templating for a second-generation cementless stem compared with its first-generation design. A prospective cohort of 100 consecutive patients who had undergone a primary total hip arthroplasty using a new second-generation cementless stem was compared with the prior 100 hips that had received the first-generation stem. The authors believe that the second-generation stem may allow equal or more accurate digital templating compared with its predicate design.

Value of computed tomography-based three-dimensional surgical preoperative planning software in total hip arthroplasty with developmental dysplasia of the hip

“…In total hip arthroplasty, stem size influences postoperative leg length discrepancy and femoral offset, and undersized stems increase the risk of postoperative stem subsidence [3]. Further, stem anteversion influences combined anteversion theory, and inappropriate stem anteversion increases the risk of dislocation [12].…”

“…Recent years have seen a growing number of younger and more active patients undergoing THA, along with increasing use of cementless prostheses worldwide. One important factor is the need to accurately determine implant size; undersized stems can result in stem subsidence, while oversized stems can lead to intraoperative fractures [1][2][3][4]. Thus, appropriate and meticulous preoperative planning is necessary to reduce the chances of these complications.…”

Second-Generation Versus First-Generation Cementless Tapered Wedge Femoral Stems

“…So although this second-generation design yielded results similar to those of the first-generation stem, it offers a better overall canal fit, as demonstrated by this anatomical software. 24 Despite this, it is important to note that these earlier generation prostheses can achieve satisfactory outcomes. Most recently, Pierce et al 25 evaluated the outcomes and survivorship of the same prostheses used in the control cohort of this study (194 arthroplasties).…”

Scaling Marker Position Determines the Accuracy of Digital Templating for Total Hip Arthroplasty

“…Digital templating systems allow for measurement and sizing of patient anatomy for preoperative implant selection. Preoperative planning aims to reduce the risk of intraoperative fracture, decrease overall surgical time, plan for implant constructs, and decrease the total number of trays required for a given surgery [3][4][5]. Images that are used by digital templating systems must be accurately scaled to allow for accurate implant selection [1,7,8].…”