Stem diameter and rotational stability in revision total hip arthroplasty: a biomechanical analysis
<p>Abstract</p> <p>Background</p> <p>Proximal femoral bone loss during revision hip arthroplasty often requires bypassing the deficient metaphyseal bone to obtain distal fixation. The purpose of this study was to determine the effect of stem diameter and length of diaph...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
BMC
2006-10-01
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| Series: | Journal of Orthopaedic Surgery and Research |
| Online Access: | http://www.josr-online.com/content/1/1/5 |
| _version_ | 1811305609071427584 |
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| author | Paprosky Wayne G Jacobs Joshua J Berger Richard A Hallab Nadim J Meneghini R Michael Rosenberg Aaron G |
| author_facet | Paprosky Wayne G Jacobs Joshua J Berger Richard A Hallab Nadim J Meneghini R Michael Rosenberg Aaron G |
| author_sort | Paprosky Wayne G |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>Proximal femoral bone loss during revision hip arthroplasty often requires bypassing the deficient metaphyseal bone to obtain distal fixation. The purpose of this study was to determine the effect of stem diameter and length of diaphyseal contact in achieving rotational stability in revision total hip arthroplasty.</p> <p>Methods</p> <p>Twenty-four cadaveric femoral specimens were implanted with a fully porous-coated stem. Two different diameters were tested and the stems were implanted at multiple contact lengths without proximal bone support. Each specimen underwent torsional testing to failure and rotational micromotion was measured at the implant-bone interface.</p> <p>Results</p> <p>The larger stem diameter demonstrated a greater torsional stability for a given length of cortical contact (p ≤ 0.05). Decreasing length of diaphyseal contact length was associated with less torsional stability. Torsional resistance was inconsistent at 2 cm of depth.</p> <p>Conclusion</p> <p>Larger stem diameters frequently used in revisions may be associated with less diaphyseal contact length to achieve equivalent rotational stability compared to smaller diameter stems. Furthermore, a minimum of 3 cm or 4 cm of diaphyseal contact with a porous-coated stem should be achieved in proximal femoral bone deficiency and will likely be dependent on the stem diameter utilized at the time of surgery.</p> |
| first_indexed | 2024-04-13T08:29:29Z |
| format | Article |
| id | doaj.art-e35e008c558e430991544712830c045f |
| institution | Directory Open Access Journal |
| issn | 1749-799X |
| language | English |
| last_indexed | 2024-04-13T08:29:29Z |
| publishDate | 2006-10-01 |
| publisher | BMC |
| record_format | Article |
| series | Journal of Orthopaedic Surgery and Research |
| spelling | doaj.art-e35e008c558e430991544712830c045f2022-12-22T02:54:19ZengBMCJournal of Orthopaedic Surgery and Research1749-799X2006-10-0111510.1186/1749-799X-1-5Stem diameter and rotational stability in revision total hip arthroplasty: a biomechanical analysisPaprosky Wayne GJacobs Joshua JBerger Richard AHallab Nadim JMeneghini R MichaelRosenberg Aaron G<p>Abstract</p> <p>Background</p> <p>Proximal femoral bone loss during revision hip arthroplasty often requires bypassing the deficient metaphyseal bone to obtain distal fixation. The purpose of this study was to determine the effect of stem diameter and length of diaphyseal contact in achieving rotational stability in revision total hip arthroplasty.</p> <p>Methods</p> <p>Twenty-four cadaveric femoral specimens were implanted with a fully porous-coated stem. Two different diameters were tested and the stems were implanted at multiple contact lengths without proximal bone support. Each specimen underwent torsional testing to failure and rotational micromotion was measured at the implant-bone interface.</p> <p>Results</p> <p>The larger stem diameter demonstrated a greater torsional stability for a given length of cortical contact (p ≤ 0.05). Decreasing length of diaphyseal contact length was associated with less torsional stability. Torsional resistance was inconsistent at 2 cm of depth.</p> <p>Conclusion</p> <p>Larger stem diameters frequently used in revisions may be associated with less diaphyseal contact length to achieve equivalent rotational stability compared to smaller diameter stems. Furthermore, a minimum of 3 cm or 4 cm of diaphyseal contact with a porous-coated stem should be achieved in proximal femoral bone deficiency and will likely be dependent on the stem diameter utilized at the time of surgery.</p>http://www.josr-online.com/content/1/1/5 |
| spellingShingle | Paprosky Wayne G Jacobs Joshua J Berger Richard A Hallab Nadim J Meneghini R Michael Rosenberg Aaron G Stem diameter and rotational stability in revision total hip arthroplasty: a biomechanical analysis Journal of Orthopaedic Surgery and Research |
| title | Stem diameter and rotational stability in revision total hip arthroplasty: a biomechanical analysis |
| title_full | Stem diameter and rotational stability in revision total hip arthroplasty: a biomechanical analysis |
| title_fullStr | Stem diameter and rotational stability in revision total hip arthroplasty: a biomechanical analysis |
| title_full_unstemmed | Stem diameter and rotational stability in revision total hip arthroplasty: a biomechanical analysis |
| title_short | Stem diameter and rotational stability in revision total hip arthroplasty: a biomechanical analysis |
| title_sort | stem diameter and rotational stability in revision total hip arthroplasty a biomechanical analysis |
| url | http://www.josr-online.com/content/1/1/5 |
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