Publication: The effect of trochleoplasty on patellar stability and kinematics : A biomechanical study in vitro
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0
Issued Date
2008
Resource Type
File Type
application/pdf
ISSN
0301620X
Other identifier(s)
2-s2.0-47549083271
Rights Holder(s)
Scopus
Bibliographic Citation
Journal of Bone and Joint Surgery - Series B. Vol 90, No.7 (2008), p.864-869
Suggested Citation
Amis A.A., Oguz C., Bull A.M.J., Senavongse W., Dejour D. The effect of trochleoplasty on patellar stability and kinematics : A biomechanical study in vitro. Journal of Bone and Joint Surgery - Series B. Vol 90, No.7 (2008), p.864-869. doi:10.1302/0301-620X.90B7.20447 Retrieved from: https://hdl.handle.net/20.500.14740/3958
Author(s)
Abstract
Objective patellar instability has been correlated with dysplasia of the femoral trochlea. This in vitro study tested the hypothesis that trochleoplasty would increase patellar stability and normalise the kinematics of a knee with a dysplastic trochlea. Six fresh-frozen knees were loaded via the heads of the quadriceps. The patella was displaced 10 mm laterally and the displacing force was measured from 0° to 90° of flexion. Patellar tracking was measured from 0° to 130° of knee flexion using magnetic sensors. These tests were repeated after raising the central anterior trochlea to simulate dysplasia, and repeated again after performing a trochleoplasty on each specimen. The simulated dysplasia significantly reduced stability from that of the normal knee (p < 0.001). Trochleoplasty significantly increased the stability (p < 0.001), so that it did not then differ significantly from the normal knee (p = 0.244). There were small but statistically significant changes in patellar tracking (p < 0.001). This study has provided objective biomechanical data to support the use of trochleoplasty in the treatment of patellar instability associated with femoral trochlear dysplasia. ©2008 British Editorial Society of Bone and Joint Surgery.
Subject(s)
Article
Biomechanics
Controlled study
Dysplasia
Human
Human tissue
Joint stability
Kinematics
Knee function
Knee instability
Leg movement
Loading test
Patella
Patella dislocation
Priority journal
Quadriceps femoris muscle
Sensor
Simulation
Statistical significance
Trochlea dysplasia
Trochleoplasty
Biomechanics
Cadaver
Evidence-Based Medicine
Humans
Joint Instability
Osteotomy
Patella
Stress, Mechanical
Biomechanics
Controlled study
Dysplasia
Human
Human tissue
Joint stability
Kinematics
Knee function
Knee instability
Leg movement
Loading test
Patella
Patella dislocation
Priority journal
Quadriceps femoris muscle
Sensor
Simulation
Statistical significance
Trochlea dysplasia
Trochleoplasty
Biomechanics
Cadaver
Evidence-Based Medicine
Humans
Joint Instability
Osteotomy
Patella
Stress, Mechanical