Defining the fit and ideal entry site of the fibula rod system––a computed tomography based study in elderly patients with lower limb infections, vascular diseases or tumors
Objectives To determine the configuration of the distal fibula anatomy and the fitness of the Fibula Rod System (Acumed®, Hillsboro, Oregon) in a series of fibula models and to determine the optimal entry site of the rod. Methods Consecutive series of computed tomography (CT) of tibias and fibulae w...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2023-02-01
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| Series: | Journal of Orthopaedic Surgery |
| Online Access: | https://doi.org/10.1177/10225536231157129 |
| _version_ | 1827987643006189568 |
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| author | Yan Chun Cheung Dennis KH Yee Christian Fang |
| author_facet | Yan Chun Cheung Dennis KH Yee Christian Fang |
| author_sort | Yan Chun Cheung |
| collection | DOAJ |
| description | Objectives To determine the configuration of the distal fibula anatomy and the fitness of the Fibula Rod System (Acumed®, Hillsboro, Oregon) in a series of fibula models and to determine the optimal entry site of the rod. Methods Consecutive series of computed tomography (CT) of tibias and fibulae with no fracture or deformity were converted to stereo-lithograph format, and imported into Meshmixer software (Autodesk, San Rafael, California). A 3.6 × 180 mm fibula rod model was virtually inserted to best fit the intramedullary canal of the fibula model and to a depth of 0 mm proud at the distal fibula. The location of the entry point in relationship to the fibular tip, and the distance between the rod and the lateral fibula cortex were measured. Results CT of 41 fibulae (23 male and 18 female patients) contributed to the three-dimensional fibula modeling. The entry point was 3.5 mm (SD 2.0) medial to (in mortise view) and 1.0 mm (SD 2.1) anterior to (in lateral view) the fibular tip. The fibula rod was inserted to a depth of 6.2 mm (SD 2.1) proximal to the fibula tip. The mean shortest distance of the rod to the outer cortex was 1.88 mm (SD 0.87). There was a breach of the posterolateral cortex in one patient. Conclusion The guide pin entry site of fibula rod should be medial and anterior offset with reference to the fibula tip, in contrary to the distal tip as recommended in the manual. There is a chance of breaching the posterolateral cortex with rod entry. |
| first_indexed | 2024-04-09T23:51:17Z |
| format | Article |
| id | doaj.art-40549343545e484a9499ce2960448ee0 |
| institution | Directory Open Access Journal |
| issn | 2309-4990 |
| language | English |
| last_indexed | 2024-04-09T23:51:17Z |
| publishDate | 2023-02-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Journal of Orthopaedic Surgery |
| spelling | doaj.art-40549343545e484a9499ce2960448ee02023-03-17T09:34:16ZengSAGE PublishingJournal of Orthopaedic Surgery2309-49902023-02-013110.1177/10225536231157129Defining the fit and ideal entry site of the fibula rod system––a computed tomography based study in elderly patients with lower limb infections, vascular diseases or tumorsYan Chun CheungDennis KH YeeChristian FangObjectives To determine the configuration of the distal fibula anatomy and the fitness of the Fibula Rod System (Acumed®, Hillsboro, Oregon) in a series of fibula models and to determine the optimal entry site of the rod. Methods Consecutive series of computed tomography (CT) of tibias and fibulae with no fracture or deformity were converted to stereo-lithograph format, and imported into Meshmixer software (Autodesk, San Rafael, California). A 3.6 × 180 mm fibula rod model was virtually inserted to best fit the intramedullary canal of the fibula model and to a depth of 0 mm proud at the distal fibula. The location of the entry point in relationship to the fibular tip, and the distance between the rod and the lateral fibula cortex were measured. Results CT of 41 fibulae (23 male and 18 female patients) contributed to the three-dimensional fibula modeling. The entry point was 3.5 mm (SD 2.0) medial to (in mortise view) and 1.0 mm (SD 2.1) anterior to (in lateral view) the fibular tip. The fibula rod was inserted to a depth of 6.2 mm (SD 2.1) proximal to the fibula tip. The mean shortest distance of the rod to the outer cortex was 1.88 mm (SD 0.87). There was a breach of the posterolateral cortex in one patient. Conclusion The guide pin entry site of fibula rod should be medial and anterior offset with reference to the fibula tip, in contrary to the distal tip as recommended in the manual. There is a chance of breaching the posterolateral cortex with rod entry.https://doi.org/10.1177/10225536231157129 |
| spellingShingle | Yan Chun Cheung Dennis KH Yee Christian Fang Defining the fit and ideal entry site of the fibula rod system––a computed tomography based study in elderly patients with lower limb infections, vascular diseases or tumors Journal of Orthopaedic Surgery |
| title | Defining the fit and ideal entry site of the fibula rod system––a computed tomography based study in elderly patients with lower limb infections, vascular diseases or tumors |
| title_full | Defining the fit and ideal entry site of the fibula rod system––a computed tomography based study in elderly patients with lower limb infections, vascular diseases or tumors |
| title_fullStr | Defining the fit and ideal entry site of the fibula rod system––a computed tomography based study in elderly patients with lower limb infections, vascular diseases or tumors |
| title_full_unstemmed | Defining the fit and ideal entry site of the fibula rod system––a computed tomography based study in elderly patients with lower limb infections, vascular diseases or tumors |
| title_short | Defining the fit and ideal entry site of the fibula rod system––a computed tomography based study in elderly patients with lower limb infections, vascular diseases or tumors |
| title_sort | defining the fit and ideal entry site of the fibula rod system a computed tomography based study in elderly patients with lower limb infections vascular diseases or tumors |
| url | https://doi.org/10.1177/10225536231157129 |
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