Coronal alignment is a predictor of the rotational geometry of the distal femur in the osteo-arthritic knee

Purpose There is a lot of inter-individual variation in the rotational anatomy of the distal femur. This study was set up to define the rotational anatomy of the distal femur in the osteo-arthritic knee and to investigate its relationship with the overall coronal alignment and gender. Methods CT-sca...

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Bibliographic Details
Published in:Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA sports traumatology, arthroscopy : official journal of the ESSKA, 2013-10, Vol.21 (10), p.2331-2337
Main Authors: Luyckx, T., Zambianchi, F., Catani, F., Bellemans, J., Victor, J.
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Anatomy
Arthritis
Arthroplasty, Replacement, Knee
Bone Anteversion - complications
Bone Anteversion - diagnostic imaging
Bone Anteversion - pathology
Bone Anteversion - surgery
Bone Retroversion - complications
Bone Retroversion - diagnostic imaging
Bone Retroversion - pathology
Bone Retroversion - surgery
Female
Femur - diagnostic imaging
Femur - pathology
Femur - surgery
Gender
Geometry
Humans
Knee
Knee Joint - diagnostic imaging
Knee Joint - pathology
Knee Joint - surgery
Linear Models
Male
Medicine
Medicine & Public Health
Middle Aged
Multivariate Analysis
Orthopedics
Osteoarthritis, Knee - complications
Osteoarthritis, Knee - diagnostic imaging
Osteoarthritis, Knee - pathology
Osteoarthritis, Knee - surgery
Patients
Retrospective Studies
Rotation
Sex Factors
Surgery
Tomography, X-Ray Computed
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Summary:Purpose There is a lot of inter-individual variation in the rotational anatomy of the distal femur. This study was set up to define the rotational anatomy of the distal femur in the osteo-arthritic knee and to investigate its relationship with the overall coronal alignment and gender. Methods CT-scans of 231 patients with end-stage knee osteo-arthritis prior to TKA surgery were obtained. This represents the biggest series published on rational geometry of the distal femur in literature so far. Results The posterior condylar line (PCL) was on average 1.6° (SD 1.9) internally rotated relative to the surgical transepicondylar axis (sTEA). The perpendicular to trochlear anteroposterior axis (⊥TRAx) was on average 4.8° (SD 3.3°) externally rotated relative to the sTEA. The relationship between the PCL and the sTEA was statistically different in the different coronal alignment groups ( p  
ISSN:0942-2056
1433-7347
DOI:10.1007/s00167-012-2306-x