Correlation between the Bone Mineral Density and Stress on Femur around a Duetto SI Stem
In cementless stem fixation, BMD reduction around the stem is of concern because it may cause loosening. This BMD reduction is assumed to be caused by stem implantation-induced alteration of the physiological feedback system, which may cause stress shielding and result in loosening, but the causal r...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2014-01-01
|
| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/786185 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832554360280711168 |
|---|---|
| author | Rina Sakai Takeaki Yamamoto Katsufumi Uchiyama Kentaro Uchida Masaki Nakao Kiyoshi Mabuchi |
| author_facet | Rina Sakai Takeaki Yamamoto Katsufumi Uchiyama Kentaro Uchida Masaki Nakao Kiyoshi Mabuchi |
| author_sort | Rina Sakai |
| collection | DOAJ |
| description | In cementless stem fixation, BMD reduction around the stem is of concern because it may cause loosening. This BMD reduction is assumed to be caused by stem implantation-induced alteration of the physiological feedback system, which may cause stress shielding and result in loosening, but the causal relationship has not been clarified. In this study, using a Duetto SI stem, we investigated the correlation between the postoperative BMD around the stem and stress. In patients who underwent their first THA at the orthopedic department of our university, the BMD was measured using DEXA, and FEA was performed with an equivalent time course. Time-course changes in the BMD, von Mises stress, and triaxial stress in Gruen zones 1 through 7 were calculated from those measured at 2 weeks and 5 months after surgery. The BMD and von Mises stress showed a bidirectional correlation when Gruen’s classification was plotted on the horizontal axis. An increase in stress loaded on bone was assumed to be a factor increasing the BMD. The Duetto SI stem was fixed on the distal side, suggesting its stable fixation. BMD measurement and FEA were useful for quantification of the bone dynamics around the stem from an early phase. |
| format | Article |
| id | doaj-art-6da5a98eb338445ea240ab2fef9006d5 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-6da5a98eb338445ea240ab2fef9006d52025-02-03T05:51:45ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/786185786185Correlation between the Bone Mineral Density and Stress on Femur around a Duetto SI StemRina Sakai0Takeaki Yamamoto1Katsufumi Uchiyama2Kentaro Uchida3Masaki Nakao4Kiyoshi Mabuchi5Department of Medical Engineering and Technology, School of Allied Health Sciences, Kitasato University, 1-15-1 Kitasato, Minami Ku, Sagamihara, Kanagawa 252-0329, JapanDepartment of Orthopaedic Surgery, School of Medicine, Kitasato University, Sagamihara, Kanagawa, JapanDepartment of Orthopaedic Surgery, School of Medicine, Kitasato University, Sagamihara, Kanagawa, JapanDepartment of Orthopaedic Surgery, School of Medicine, Kitasato University, Sagamihara, Kanagawa, JapanGraduate School of Medical Sciences, Kitasato University, Sagamihara, Kanagawa, JapanDepartment of Medical Engineering and Technology, School of Allied Health Sciences, Kitasato University, 1-15-1 Kitasato, Minami Ku, Sagamihara, Kanagawa 252-0329, JapanIn cementless stem fixation, BMD reduction around the stem is of concern because it may cause loosening. This BMD reduction is assumed to be caused by stem implantation-induced alteration of the physiological feedback system, which may cause stress shielding and result in loosening, but the causal relationship has not been clarified. In this study, using a Duetto SI stem, we investigated the correlation between the postoperative BMD around the stem and stress. In patients who underwent their first THA at the orthopedic department of our university, the BMD was measured using DEXA, and FEA was performed with an equivalent time course. Time-course changes in the BMD, von Mises stress, and triaxial stress in Gruen zones 1 through 7 were calculated from those measured at 2 weeks and 5 months after surgery. The BMD and von Mises stress showed a bidirectional correlation when Gruen’s classification was plotted on the horizontal axis. An increase in stress loaded on bone was assumed to be a factor increasing the BMD. The Duetto SI stem was fixed on the distal side, suggesting its stable fixation. BMD measurement and FEA were useful for quantification of the bone dynamics around the stem from an early phase.http://dx.doi.org/10.1155/2014/786185 |
| spellingShingle | Rina Sakai Takeaki Yamamoto Katsufumi Uchiyama Kentaro Uchida Masaki Nakao Kiyoshi Mabuchi Correlation between the Bone Mineral Density and Stress on Femur around a Duetto SI Stem The Scientific World Journal |
| title | Correlation between the Bone Mineral Density and Stress on Femur around a Duetto SI Stem |
| title_full | Correlation between the Bone Mineral Density and Stress on Femur around a Duetto SI Stem |
| title_fullStr | Correlation between the Bone Mineral Density and Stress on Femur around a Duetto SI Stem |
| title_full_unstemmed | Correlation between the Bone Mineral Density and Stress on Femur around a Duetto SI Stem |
| title_short | Correlation between the Bone Mineral Density and Stress on Femur around a Duetto SI Stem |
| title_sort | correlation between the bone mineral density and stress on femur around a duetto si stem |
| url | http://dx.doi.org/10.1155/2014/786185 |
| work_keys_str_mv | AT rinasakai correlationbetweenthebonemineraldensityandstressonfemuraroundaduettosistem AT takeakiyamamoto correlationbetweenthebonemineraldensityandstressonfemuraroundaduettosistem AT katsufumiuchiyama correlationbetweenthebonemineraldensityandstressonfemuraroundaduettosistem AT kentarouchida correlationbetweenthebonemineraldensityandstressonfemuraroundaduettosistem AT masakinakao correlationbetweenthebonemineraldensityandstressonfemuraroundaduettosistem AT kiyoshimabuchi correlationbetweenthebonemineraldensityandstressonfemuraroundaduettosistem |