Academic Journal
The final implant position of a commonly used collarless straight tapered stem design (Corail®) does not correlate with femoral neck resection height in cement-free total hip arthroplasty: a retrospective computed tomography analysis
| العنوان: | The final implant position of a commonly used collarless straight tapered stem design (Corail®) does not correlate with femoral neck resection height in cement-free total hip arthroplasty: a retrospective computed tomography analysis |
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| المؤلفون: | Michael Worlicek, Markus Weber, Michael Wörner, Timo Schwarz, Florian Zeman, Joachim Grifka, Tobias Renkawitz, Benjamin Craiovan |
| المصدر: | Journal of Orthopaedics and Traumatology, Vol 19, Iss 1, Pp 1-7 (2018) |
| بيانات النشر: | SpringerOpen, 2018. |
| سنة النشر: | 2018 |
| المجموعة: | LCC:Orthopedic surgery |
| مصطلحات موضوعية: | Hip arthroplasty, Stem version, Combined anteversion, Final stem position, Orthopedic surgery, RD701-811 |
| الوصف: | Abstract Background In total hip arthroplasty, inadequate femoral component positioning can be associated with instability, impingement and component wear and subsequently with patient dissatisfaction. In this study, we investigated the influence of femoral neck resection height on the final three-dimensional position of a collarless straight tapered stem (Corail®). We asked two questions—(1) is neck resection height correlated with version, tilt, and varus/valgus alignment of the femoral component, and (2) dependent on the resection height of the femoral neck, which area of the stem comes into contact with the femoral cortical bone? Materials and methods Three-dimensional computed tomography scans of 40 patients who underwent minimally invasive, cementless total hip arthroplasty were analyzed retrospectively. We analyzed the relationship between femoral neck resection height and three-dimensional alignment of the femoral implant, as well as the contact points of the implant with the femoral cortical bone. This investigation was approved by the local Ethics Commission (No.10-121-0263) and is a secondary analysis of a larger project (DRKS00000739, German Clinical Trials Register May-02-2011). Results Mean femoral neck resection height was 10.4 mm (± 4.8) (range 0–20.1 mm). Mean stem version was 8.7° (± 7.4) (range − 2° to 27.9°). Most patients had a varus alignment of the implant. The mean varus/valgus alignment was 1.5° (± 1.8). All 40 patients (100%) had anterior tilt of the implant with a mean tilt of 2.2° (± 1.6). Femoral neck resection height did not correlate with stem version, varus/valgus alignment, or tilt. Independent from femoral neck resection height, in most patients the implant had contact with the ventral and ventromedial cortical bone in the upper third (77.5%) and the middle third (52.5%). In the lower third, the majority of the implants had contact with the lateral and dorsolateral cortical bone (92.5%). Conclusion Femoral neck resection height ranging between 0 and 20.1 mm does not correlate with the final position of a collarless straight tapered stem design (Corail®). Level of evidence Level 3. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1590-9921 1590-9999 |
| Relation: | http://link.springer.com/article/10.1186/s10195-018-0513-z; https://doaj.org/toc/1590-9921; https://doaj.org/toc/1590-9999 |
| DOI: | 10.1186/s10195-018-0513-z |
| URL الوصول: | https://doaj.org/article/b25df72f52b94013a1354741315a7f69 |
| رقم الانضمام: | edsdoj.b25df72f52b94013a1354741315a7f69 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 15909921 15909999 |
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| DOI: | 10.1186/s10195-018-0513-z |