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Knee Surgery, Sports Traumatology, Arthroscopy

Published in:

01-12-2014 | Knee

Strong correlation between the morphology of the proximal femur and the geometry of the distal femoral trochlea

Authors: Samantha J. Wright, Tim A. E. J. Boymans, Bernd Grimm, Anthony W. Miles, Oliver Kessler

Published in: Knee Surgery, Sports Traumatology, Arthroscopy | Issue 12/2014

Abstract

Purpose

Previous investigations suggested that the geometry of the proximal femur may be related to osteoarthritis of the tibiofemoral joint and various patellofemoral joint conditions. This study aims to investigate the correlation between proximal and distal femoral geometry. Such a correlation could aid our understanding of patient complications after total knee arthroplasty (TKA) and be of benefit for further development of kinematic approaches in TKA.

Methods

CT scans of 60 subjects (30 males, 30 females) were used to identify anatomical landmarks to calculate anatomical parameters of the femur, including the femoral neck anteversion angle, neck–shaft angle (NSA), mediolateral offset (ML-offset), condylar twist angle (CTA), trochlear sulcus angle (TSA) and medial/lateral trochlear inclination angles (MTIA/LTIA). Correlation analyses were carried out to assess the relationship between these parameters, and the effect of gender was investigated.

Results

The CTA, TSA and LTIA showed no correlation with any proximal parameter. The MTIA was correlated with all three proximal parameters, mostly with the NSA and ML-offset. Per 5° increase in NSA, the MTIA was 2.1° lower (p < 0.01), and for every 5 mm increase in ML-offset, there was a 2.6° increase in MTIA (p < 0.01). These results were strongest and statistically significant in females and not in males and were independent of length and weight.

Conclusions

Proximal femoral geometry is distinctively linked with trochlear morphology. In order to improve knowledge on the physiological kinematics of the knee joint and to improve the concept of kinematic knee replacement, the proximal femur seems to be a factor of clinical importance.

Level of evidence

III.

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Title: Strong correlation between the morphology of the proximal femur and the geometry of the distal femoral trochlea
Authors: Samantha J. Wright
Tim A. E. J. Boymans
Bernd Grimm
Anthony W. Miles
Oliver Kessler
Publication date: 01-12-2014
Publisher: Springer Berlin Heidelberg
Published in: Knee Surgery, Sports Traumatology, Arthroscopy / Issue 12/2014
Print ISSN: 0942-2056
Electronic ISSN: 1433-7347
DOI: https://doi.org/10.1007/s00167-014-3343-4

At a glance: The STEP trials

Springer Medicine

Strong correlation between the morphology of the proximal femur and the geometry of the distal femoral trochlea

Abstract

Purpose

Methods

Results

Conclusions

Level of evidence

At a glance: The STEP trials

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusions

Level of evidence

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