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Updated: May 16, 2026

A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible

A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible

Published on: January 28, 2020

Novel image-matching software for postoperative evaluation after TKA.

Katsumasa Tei¹, Kazunari Ishida, Tomoyuki Matsumoto

¹Department of Orthopaedic Surgery, Kobe Kaisei Hospital, Kobe City, Japan. tkatsu@js6.so-net.ne.jp

|December 11, 2012

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Novel 3-D image-matching software accurately assesses implant positioning after total knee arthroplasty (TKA). This tool shows excellent correlation between intraoperative and postoperative measurements, proving useful for TKA evaluation.

Area of Science:

Orthopedic Surgery
Biomedical Engineering
Medical Imaging

Background:

Traditional 2-D radiographic assessments for total knee arthroplasty (TKA) may lack precision for 3-D implant positioning.
Accurate postoperative evaluation is crucial for assessing TKA outcomes and implant alignment.

Purpose of the Study:

To evaluate the accuracy of novel 3-D image-matching software for assessing implant positioning after TKA.
To determine if this 3-D software is a reliable tool for postoperative TKA evaluation.

Main Methods:

30 patients undergoing TKA were included.
Intraoperative bone cut thickness was measured.
Postoperative measurements were performed using Athena Knee 3-D image-matching software, comparing intra- and postoperative bone cut thicknesses.

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Last Updated: May 16, 2026

A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible

A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible

Published on: January 28, 2020

Main Results:

No significant differences were found in the medial compartment bone cuts.
A mean difference of approximately 1 mm was observed in the lateral compartment, potentially due to remaining cartilage.
Excellent correlation (linear regression) was found between intraoperative and postoperative measurements for all bone cuts.

Conclusions:

The 3-D image-matching software demonstrates sufficient accuracy for assessing postoperative implant positioning in TKA.
This software, initially for preoperative planning, is a valuable tool for postoperative TKA evaluation.