The Dorr Type and Cortical Thickness Index of the Proximal Femur for Predicting Peri-Operative Complications during Hemiarthroplasty
Purpose. To assess the Dorr proximal femoral types and the cortical thickness index for predicting peri-operative complications during hemiarthroplasty. Methods. Records of 53 male and 147 female elderly who underwent cemented or uncemented monopolar hemiarthroplasty for displaced intracapsular femo...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2014-04-01
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| Series: | Journal of Orthopaedic Surgery |
| Online Access: | https://doi.org/10.1177/230949901402200123 |
| _version_ | 1819175961920274432 |
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| author | William Nash Andrew Harris |
| author_facet | William Nash Andrew Harris |
| author_sort | William Nash |
| collection | DOAJ |
| description | Purpose. To assess the Dorr proximal femoral types and the cortical thickness index for predicting peri-operative complications during hemiarthroplasty. Methods. Records of 53 male and 147 female elderly who underwent cemented or uncemented monopolar hemiarthroplasty for displaced intracapsular femoral neck fractures were reviewed. Any intra-operative fracture and postoperative dislocation within 30 days was recorded. The cortical thickness index was defined as the ratio of cortical width minus endosteal width to cortical width at a level of 100 mm below the tip of the lesser trochanter. Higher values indicated thicker cortices. The Dorr proximal femur morphology was classified into types A, B, and C. Results. 28 patients were excluded. The proximal femurs of the remaining 172 patients (mean age, 85 years) were categorised as Dorr type A (n=29), type B (n=75), and type C (n=68). The respective mean cortical thickness indices were 1.10, 0.79, and 0.65. Lower cortical thickness indices correlated with worse Dorr types (p<0.05). There were 18 intra-operative fractures; 8 and 10 occurred in Dorr types B and C femurs versus none in Dorr type A femurs (p=0.046). There were 5 postoperative dislocations; 3 and 2 occurred in Dorr types B and C femurs versus none in Dorr type A femurs (p=0.591). The mean cortical thickness index was significantly lower in those with a fracture (n=18) than those without a fracture (n=154) [0.59 vs. 0.81, p=0.0003]. Conclusion. Dorr types B and C proximal femurs were at greater risk of intra-operative fracture. |
| first_indexed | 2024-12-22T21:03:11Z |
| format | Article |
| id | doaj.art-83e0ee52ce3a4b06855fb2896241e72f |
| institution | Directory Open Access Journal |
| issn | 2309-4990 |
| language | English |
| last_indexed | 2024-12-22T21:03:11Z |
| publishDate | 2014-04-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Journal of Orthopaedic Surgery |
| spelling | doaj.art-83e0ee52ce3a4b06855fb2896241e72f2022-12-21T18:12:47ZengSAGE PublishingJournal of Orthopaedic Surgery2309-49902014-04-012210.1177/230949901402200123The Dorr Type and Cortical Thickness Index of the Proximal Femur for Predicting Peri-Operative Complications during HemiarthroplastyWilliam Nash0Andrew Harris1 SE Thames Rotation, Queen Elizabeth Hospital, London, United Kingdom Belfast Hospitals NHS Trust, Belfast, Northern Ireland, United KingdomPurpose. To assess the Dorr proximal femoral types and the cortical thickness index for predicting peri-operative complications during hemiarthroplasty. Methods. Records of 53 male and 147 female elderly who underwent cemented or uncemented monopolar hemiarthroplasty for displaced intracapsular femoral neck fractures were reviewed. Any intra-operative fracture and postoperative dislocation within 30 days was recorded. The cortical thickness index was defined as the ratio of cortical width minus endosteal width to cortical width at a level of 100 mm below the tip of the lesser trochanter. Higher values indicated thicker cortices. The Dorr proximal femur morphology was classified into types A, B, and C. Results. 28 patients were excluded. The proximal femurs of the remaining 172 patients (mean age, 85 years) were categorised as Dorr type A (n=29), type B (n=75), and type C (n=68). The respective mean cortical thickness indices were 1.10, 0.79, and 0.65. Lower cortical thickness indices correlated with worse Dorr types (p<0.05). There were 18 intra-operative fractures; 8 and 10 occurred in Dorr types B and C femurs versus none in Dorr type A femurs (p=0.046). There were 5 postoperative dislocations; 3 and 2 occurred in Dorr types B and C femurs versus none in Dorr type A femurs (p=0.591). The mean cortical thickness index was significantly lower in those with a fracture (n=18) than those without a fracture (n=154) [0.59 vs. 0.81, p=0.0003]. Conclusion. Dorr types B and C proximal femurs were at greater risk of intra-operative fracture.https://doi.org/10.1177/230949901402200123 |
| spellingShingle | William Nash Andrew Harris The Dorr Type and Cortical Thickness Index of the Proximal Femur for Predicting Peri-Operative Complications during Hemiarthroplasty Journal of Orthopaedic Surgery |
| title | The Dorr Type and Cortical Thickness Index of the Proximal Femur for Predicting Peri-Operative Complications during Hemiarthroplasty |
| title_full | The Dorr Type and Cortical Thickness Index of the Proximal Femur for Predicting Peri-Operative Complications during Hemiarthroplasty |
| title_fullStr | The Dorr Type and Cortical Thickness Index of the Proximal Femur for Predicting Peri-Operative Complications during Hemiarthroplasty |
| title_full_unstemmed | The Dorr Type and Cortical Thickness Index of the Proximal Femur for Predicting Peri-Operative Complications during Hemiarthroplasty |
| title_short | The Dorr Type and Cortical Thickness Index of the Proximal Femur for Predicting Peri-Operative Complications during Hemiarthroplasty |
| title_sort | dorr type and cortical thickness index of the proximal femur for predicting peri operative complications during hemiarthroplasty |
| url | https://doi.org/10.1177/230949901402200123 |
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