Cargando…
Distal Femur Morphology of Iranian Population and Correlation With Current Prostheses
BACKGROUND: Maintaining proper size and rotation of components of total knee arthroplasty is mandatory for optimal longevity. Ethnical differences may affect the fitness of prostheses that were manufactured mainly based on Caucasian dimensions. OBJECTIVES: To evaluate the distal femur morphology of...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Kowsar
2016
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4867163/ https://www.ncbi.nlm.nih.gov/pubmed/27186388 http://dx.doi.org/10.5812/ircmj.21818 |
_version_ | 1782432012657754112 |
---|---|
author | Moghtadaei, Mehdi Moghimi, Javad Shahhoseini, Gholamreza |
author_facet | Moghtadaei, Mehdi Moghimi, Javad Shahhoseini, Gholamreza |
author_sort | Moghtadaei, Mehdi |
collection | PubMed |
description | BACKGROUND: Maintaining proper size and rotation of components of total knee arthroplasty is mandatory for optimal longevity. Ethnical differences may affect the fitness of prostheses that were manufactured mainly based on Caucasian dimensions. OBJECTIVES: To evaluate the distal femur morphology of the Iranian population at the level of standard cuts simulated via computed tomography. PATIENTS AND METHODS: During 2013, 150 consecutive patients (96 males and 54 females) from the outpatient Department of Orthopedic Surgery of Rasoul Akram Hospital with knee CT scans were studied. We entered cases with apparent normal extremity alignment and bone maturity. Exclusion criteria were history of fracture or conditions affecting knee profile. Standard cuts were simulated on the CT scan using the Marco Pacs program. For each bone, anteroposterior (AP), mediolateral (ML), and aspect ratio (ML/AP) were measured. Values were compared with the sizing of four currently available prostheses. RESULTS: The mean age of the patients was 43 years (range: 17 to 80). All isolated parameters were higher in men significantly (P < 0.001). However, the aspect ratio did not show any significant difference (1.51 ± 0.11 vs 1.46 ± 0.1), suggestive of a similar configuration of distal femur profiles between genders. Ultimately, close correlations were observed among simulated cuts and size-matched femoral components of the prostheses. For females, however, components were mostly overhang mediolaterally except for one gender-specific subset. Decrement in the aspect ratio for larger knees was another mismatch with current prostheses that preserve an almost constant ratio throughout all sizes. CONCLUSIONS: Our findings may be applied by manufacturers to design prostheses more compatible with Asian populations. Alterations to the shape of components should be considered to provide optimal coverage. |
format | Online Article Text |
id | pubmed-4867163 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Kowsar |
record_format | MEDLINE/PubMed |
spelling | pubmed-48671632016-05-16 Distal Femur Morphology of Iranian Population and Correlation With Current Prostheses Moghtadaei, Mehdi Moghimi, Javad Shahhoseini, Gholamreza Iran Red Crescent Med J Research Article BACKGROUND: Maintaining proper size and rotation of components of total knee arthroplasty is mandatory for optimal longevity. Ethnical differences may affect the fitness of prostheses that were manufactured mainly based on Caucasian dimensions. OBJECTIVES: To evaluate the distal femur morphology of the Iranian population at the level of standard cuts simulated via computed tomography. PATIENTS AND METHODS: During 2013, 150 consecutive patients (96 males and 54 females) from the outpatient Department of Orthopedic Surgery of Rasoul Akram Hospital with knee CT scans were studied. We entered cases with apparent normal extremity alignment and bone maturity. Exclusion criteria were history of fracture or conditions affecting knee profile. Standard cuts were simulated on the CT scan using the Marco Pacs program. For each bone, anteroposterior (AP), mediolateral (ML), and aspect ratio (ML/AP) were measured. Values were compared with the sizing of four currently available prostheses. RESULTS: The mean age of the patients was 43 years (range: 17 to 80). All isolated parameters were higher in men significantly (P < 0.001). However, the aspect ratio did not show any significant difference (1.51 ± 0.11 vs 1.46 ± 0.1), suggestive of a similar configuration of distal femur profiles between genders. Ultimately, close correlations were observed among simulated cuts and size-matched femoral components of the prostheses. For females, however, components were mostly overhang mediolaterally except for one gender-specific subset. Decrement in the aspect ratio for larger knees was another mismatch with current prostheses that preserve an almost constant ratio throughout all sizes. CONCLUSIONS: Our findings may be applied by manufacturers to design prostheses more compatible with Asian populations. Alterations to the shape of components should be considered to provide optimal coverage. Kowsar 2016-01-06 /pmc/articles/PMC4867163/ /pubmed/27186388 http://dx.doi.org/10.5812/ircmj.21818 Text en Copyright © 2016, Iranian Red Crescent Medical Journal. http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited. |
spellingShingle | Research Article Moghtadaei, Mehdi Moghimi, Javad Shahhoseini, Gholamreza Distal Femur Morphology of Iranian Population and Correlation With Current Prostheses |
title | Distal Femur Morphology of Iranian Population and Correlation With Current Prostheses |
title_full | Distal Femur Morphology of Iranian Population and Correlation With Current Prostheses |
title_fullStr | Distal Femur Morphology of Iranian Population and Correlation With Current Prostheses |
title_full_unstemmed | Distal Femur Morphology of Iranian Population and Correlation With Current Prostheses |
title_short | Distal Femur Morphology of Iranian Population and Correlation With Current Prostheses |
title_sort | distal femur morphology of iranian population and correlation with current prostheses |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4867163/ https://www.ncbi.nlm.nih.gov/pubmed/27186388 http://dx.doi.org/10.5812/ircmj.21818 |
work_keys_str_mv | AT moghtadaeimehdi distalfemurmorphologyofiranianpopulationandcorrelationwithcurrentprostheses AT moghimijavad distalfemurmorphologyofiranianpopulationandcorrelationwithcurrentprostheses AT shahhoseinigholamreza distalfemurmorphologyofiranianpopulationandcorrelationwithcurrentprostheses |