Using the transepicondylar axis to define the sagittal morphology of the distal part of the femur
| Autor: | J. David Blaha, Corrie A. Mancinelli, William Simons |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
musculoskeletal diseases
Adult Male Kinematics Knee Joint Rotation Condyle Screw axis medicine Humans Orthopedics and Sports Medicine Femur Aged Aged 80 and over business.industry General Medicine Anatomy Middle Aged musculoskeletal system Sagittal plane medicine.anatomical_structure Surgery Female Cadaveric spasm business |
| Zdroj: | The Journal of bone and joint surgery. American volume. |
| ISSN: | 0021-9355 |
| Popis: | An appreciation of the morphology of the distal part of the femur is important for understanding the kinematics of the knee joint and is also important for the correct placement of the femoral component of a total knee prosthesis. Literature from the early 1800s has documented measurements of the shapes of the femoral condyles, and attempts have been made to define the shapes mathematically 1-6. Some studies have suggested that the kinematics of the knee can be described in terms of a single flexion axis and a single rotation axis 7,8. Others have suggested that, with a helical axis of rotation, the motion on the medial side of the joint is primarily spinning whereas that on the lateral side is a combination of rolling, spinning, countertranslation, and concordant translation 9. These newer kinematic studies have suggested that the sagittal outline of the knee could be circular in profile rather than having a decreasing radius, as has been proposed previously 10. Eckhoff et al. 10, in a scientific exhibit in 2001, proposed that the outlines of the condyles can be fit to a cylinder with the medial side slightly larger than the lateral. Surgeons who perform total knee arthroplasty have long recognized that the medial condyle most often is larger than the lateral but that the relative sizes of the condyles are not consistent. The purpose of the present study was to measure the sagittal morphology of the femur relative to the palpated epicondyles. Sixty-five pairs of embalmed cadaveric femora were obtained from the anatomic gift collection at West Virginia University. Two pairs of knees were unusable, and in six cases only one femur was available for measurement, leaving fifty-seven pairs and six single femora for measurement. The femora were harvested from … |
| Databáze: | OpenAIRE |
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