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In vivo sagittal plane kinematics of the FPV patellofemoral replacement


Reference:

Monk, A. P., van Duren, B. H., Pandit, H., Shakespeare, D., Murray, D. W. and Gill, H. S., 2012. In vivo sagittal plane kinematics of the FPV patellofemoral replacement. Knee Surgery, Sports Traumatology, Arthroscopy, 20 (6), pp. 1104-1109.

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Official URL:

http://dx.doi.org/10.1007/s00167-011-1717-4

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Abstract

Isolated symptomatic patellofemoral osteoarthritis has been reported in 2% of men and 8% of women older than the age of 55 years in the community. With the development of improved designs and surgical techniques, interest in the use of patellofemoral replacement has increased. The primary aim of the newer generation of patellofemoral replacement implant designs has been to more closely reproduce normal knee kinematics. This study compares the functional sagittal plane in vivo kinematics of a contemporary patellofemoral prosthesis, the FPV, with normal knee kinematics using the patella tendon angle and patella flexion angle relationships with the knee flexion angle. in vivo kinematics for a group of 8 patients (15 knees) with patellofemoral replacement and 22 normal subjects was measured for both a step-up and a lunge exercise using an established fluoroscopic method. patella tendon angle characteristics of the implanted knees were similar to those of the normal knees for the step-up exercise with a significant difference only observed at 50 degrees knee flexion angle. For the lunge exercise, the patella tendon angle for the implanted knee was consistently lower than that measured for the normal knee. Overall the subjects had excellent clinical scores post-patellofemoral replacement showing a significant improvement from their pre-operative scores. the FPV implant was closer to normal than those of total knee implants; however, there were still differences from the normal knees.

Details

Item Type Articles
CreatorsMonk, A. P., van Duren, B. H., Pandit, H., Shakespeare, D., Murray, D. W. and Gill, H. S.
DOI10.1007/s00167-011-1717-4
Related URLs
URLURL Type
http://www.ncbi.nlm.nih.gov/pubmed/22009560PubMedCentral
DepartmentsFaculty of Engineering & Design > Mechanical Engineering
Research CentresCentre for Orthopaedic Biomechanics
RefereedYes
StatusPublished
ID Code30682

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