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| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Wakelin, Edgar A Tran, Linda Twiggs, Joshua G Theodore, Willy Roe, Justin P Solomon, Michael I Fritsch, Brett A Miles, Brad P |
| Abstract | Background Successful component alignment is a major metric of success in total knee arthroplasty. Component translational placement, however, is less well reported despite being shown to affect patient outcomes. CT scans and planar X-rays are routinely used to report alignment but do not report measurements as precisely or accurately as modern navigation systems can deliver, or with reference to the pre-operative anatomy. Methods A method is presented here that utilises a CT scan obtained for pre-operative planning and a post-operative CT scan for analysis to recreate a computation model of the knee with patient-specific axes. This model is then used to determine the post-operative component position in 3D space. Results Two subjects were investigated for reproducibility producing 12 sets of results. The maximum error using this technique was 0.9° ± 0.6° in rotation and 0.5 mm ± 0.3 mm in translation. Eleven subjects were investigated for reliability producing 22 sets of results. The intra-class correlation coefficient for each of the three axes of rotation and three primary resection planes was > 0.93 indicating excellent reliability. Conclusions Routine use of this analysis will allow surgeons and engineers to better understand the effect of component alignment as well as the placement on outcome. |
| Related Links | https://josr-online.biomedcentral.com/counter/pdf/10.1186/s13018-018-0957-0.pdf |
| Ending Page | 10 |
| Page Count | 10 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| DOI | 10.1186/s13018-018-0957-0 |
| Journal | Journal of Orthopaedic Surgery and Research |
| Issue Number | 1 |
| Volume Number | 13 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2018-10-30 |
| Access Restriction | Open |
| Subject Keyword | Orthopedics Surgical Orthopedics Registration CT scan Total knee arthroplasty Alignment Reliability Reproducibility |
| Content Type | Text |
| Resource Type | Article |
| Subject | Surgery Orthopedics and Sports Medicine |
| Journal Impact Factor | 2.8/2023 |
| 5-Year Journal Impact Factor | 3/2023 |
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