Asymmetrical hip loading correlates with metal ion levels in patients with metal-on-metal hip resurfacing during sit-to-stand.
The occurrence of pseudotumours following metal-on-metal hip resurfacing arthroplasty (MoMHRA) has been associated with high serum metal ion levels and consequently higher than normal bearing wear. Measuring ground reaction force is a simple method of collecting information on joint loading during a...
| मुख्य लेखकों: | , , , , |
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| स्वरूप: | Journal article |
| भाषा: | English |
| प्रकाशित: |
Wichtig Editore s.r.l.
2014
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| _version_ | 1826288417733869568 |
|---|---|
| author | Mellon, S Grammatopoulos, G Pandit, H Murray, D Gill, H |
| author_facet | Mellon, S Grammatopoulos, G Pandit, H Murray, D Gill, H |
| author_sort | Mellon, S |
| collection | OXFORD |
| description | The occurrence of pseudotumours following metal-on-metal hip resurfacing arthroplasty (MoMHRA) has been associated with high serum metal ion levels and consequently higher than normal bearing wear. Measuring ground reaction force is a simple method of collecting information on joint loading during a sit-to-stand (STS). We investigated vertical ground reaction force (VGRF) asymmetry during sit-to-stand for 12 MoMHRA patients with known serum metal ion levels. Asymmetry was assessed using two methods: a ratio of VGRF for implanted/unimplanted side and an absolute symmetry index (ASI). It was found that subjects with high serum metal ion levels preferentially loaded their implanted sides. The difference between the two groups was most apparent during the first 22% of STS. VGRF ratio showed significant and strong correlation with serum metal ion levels (Spearman's rho = 0.8, p = 0.003). These results suggest that individual activity patterns play a role in the wear of MoMHRA and preferential loading of an implanted limb during the initiation of motion may increase the wear of metal-on-metal hip replacements. |
| first_indexed | 2024-03-07T02:13:23Z |
| format | Journal article |
| id | oxford-uuid:a166a855-cf56-4775-8c52-c6e24aa73b3c |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:13:23Z |
| publishDate | 2014 |
| publisher | Wichtig Editore s.r.l. |
| record_format | dspace |
| spelling | oxford-uuid:a166a855-cf56-4775-8c52-c6e24aa73b3c2022-03-27T02:12:59ZAsymmetrical hip loading correlates with metal ion levels in patients with metal-on-metal hip resurfacing during sit-to-stand.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a166a855-cf56-4775-8c52-c6e24aa73b3cEnglishSymplectic Elements at OxfordWichtig Editore s.r.l.2014Mellon, SGrammatopoulos, GPandit, HMurray, DGill, HThe occurrence of pseudotumours following metal-on-metal hip resurfacing arthroplasty (MoMHRA) has been associated with high serum metal ion levels and consequently higher than normal bearing wear. Measuring ground reaction force is a simple method of collecting information on joint loading during a sit-to-stand (STS). We investigated vertical ground reaction force (VGRF) asymmetry during sit-to-stand for 12 MoMHRA patients with known serum metal ion levels. Asymmetry was assessed using two methods: a ratio of VGRF for implanted/unimplanted side and an absolute symmetry index (ASI). It was found that subjects with high serum metal ion levels preferentially loaded their implanted sides. The difference between the two groups was most apparent during the first 22% of STS. VGRF ratio showed significant and strong correlation with serum metal ion levels (Spearman's rho = 0.8, p = 0.003). These results suggest that individual activity patterns play a role in the wear of MoMHRA and preferential loading of an implanted limb during the initiation of motion may increase the wear of metal-on-metal hip replacements. |
| spellingShingle | Mellon, S Grammatopoulos, G Pandit, H Murray, D Gill, H Asymmetrical hip loading correlates with metal ion levels in patients with metal-on-metal hip resurfacing during sit-to-stand. |
| title | Asymmetrical hip loading correlates with metal ion levels in patients with metal-on-metal hip resurfacing during sit-to-stand. |
| title_full | Asymmetrical hip loading correlates with metal ion levels in patients with metal-on-metal hip resurfacing during sit-to-stand. |
| title_fullStr | Asymmetrical hip loading correlates with metal ion levels in patients with metal-on-metal hip resurfacing during sit-to-stand. |
| title_full_unstemmed | Asymmetrical hip loading correlates with metal ion levels in patients with metal-on-metal hip resurfacing during sit-to-stand. |
| title_short | Asymmetrical hip loading correlates with metal ion levels in patients with metal-on-metal hip resurfacing during sit-to-stand. |
| title_sort | asymmetrical hip loading correlates with metal ion levels in patients with metal on metal hip resurfacing during sit to stand |
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