Mechanical Axis Cannot Be Restored in Total Knee Arthroplasty With a Fixed Distal Valgus Resection Angle
| Autor: | Brandon Thompson, Akin Cil, Nikolaos V. Bardakos, Gregory W. Stocks |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
musculoskeletal diseases
Orthodontics biology business.industry Coxa valga Radiography Total knee arthroplasty Coxa vara biology.organism_classification Resection stomatognathic diseases Valgus otorhinolaryngologic diseases medicine Orthopedics and Sports Medicine Femur medicine.symptom business Mechanical axis |
| Zdroj: | The Journal of Arthroplasty. 22:307-308 |
| ISSN: | 0883-5403 |
| DOI: | 10.1016/j.arth.2006.12.040 |
| Popis: | Alignment radiographs of 174 extremities in patients undergoing total knee arthroplasty were measured to determine the variability in valgus cut angle (VCA) and the anatomical factors that affect the VCA necessary to restore the mechanical axis. The VCA averaged 5.6° ± 1.0° with a range of 2° to 9°. With the 3different methods of defining the anatomical axis of the femur, 30% to 51% of patients required a VCA of less than 5° or greater than 6°. The offset and neck-shaft angle of the ipsilateral hip exert a strong effect on the VCA necessary to restore the mechanical axis. Patients with coxa valga or reduced hip offset generally require a VCA less than 5°. Patients with coxa vara or increased hip offset generally require a VCA greater than 6°. |
| Databáze: | OpenAIRE |
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