Mona Alinejad
University of Oxford
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Clinical Biomechanics | 2016
Elise Pegg; Francesco Mancuso; Mona Alinejad; Bernard Van Duren; J J O'Connor; David W. Murray; Hemant Pandit
BACKGROUND There is a greater risk of tibial component loosening when mobile unicompartmental knee replacement is performed in anterior cruciate ligament deficient knees. We previously reported on a cohort of anterior cruciate ligament deficient patients (n=46) who had undergone surgery, but no difference was found in implant survivorship at a mean 5-year follow-up. The purpose of this study was to examine the kinematic behaviour of a subcohort of these patients. METHODS The kinematic behaviour of anterior cruciate deficient knees (n=16) after mobile unicompartmental knee replacement was compared to matched intact knees (n=16). Sagittal plane knee fluoroscopy was taken while patients performed step-up and forward lunge exercises. The patellar tendon angle, knee flexion angle and implant position was calculated for each video frame. FINDINGS The patellar tendon angle was 5° lower in the deficient group, indicating greater anterior tibial translation compared to the intact group between 30 and 40° of flexion. Large variability, particularly from 40-60° of flexion, was observed in the bearing position of the deficient group, which may represent different coping mechanisms. The deficient group took 38% longer to perform the exercises. INTERPRETATION Kinematic differences were found between the deficient and intact knees after mobile unicompartmental knee replacement; but these kinematic changes do not seem to affect the medium-term clinical outcome. Whether these altered knee kinematics will have a clinical impact is as yet undetermined, but more long-term outcome data is required before mobile unicompartmental knee replacement can be recommended for an anterior cruciate ligament deficient patient.
Archive | 2015
David Wycliffe Murray; Russell Lloyd; Mona Alinejad; John Joseph O'connor
American Academy of Orthopaedic Surgeons Annual Meeting | 2015
Elise Pegg; Francesco Mancuso; Mona Alinejad; Stephen Mellon; Thomas W. Hamilton; Barbara Marks; A. F. Dodd Christopher; David W. Murray; Hemant Pandit
4th Joint Meeting of the Bone Research Society & the British Orthopaedic Research Society | 2013
Mona Alinejad; Elise Pegg; A. F. Dodd Christopher; J J O'Connor; David W. Murray
Archive | 2017
Russell Lloyd; Mona Alinejad; Robert Metzger; Paul James Kistle
Archive | 2017
Russell Lloyd; Paul James Kistle; Mona Alinejad; Robert Metzger
Archive | 2016
David Wycliffe Murray; Russell Lloyd; Mona Alinejad; John Joseph O'connor
Archive | 2014
Elise Pegg; Bhavesh Popat; Mona Alinejad; Bernard Van Duren; David W. Murray; Hemant Pandit
4th Joint Meeting of the Bone Research Society & the British Orthopaedic Research Society | 2013
Elise Pegg; Mona Alinejad; J J O'Connor; David W. Murray
Archive | 2011
David Wycliffe Murray; Christopher Dodd; J J O'Connor; John Goodfellow; Mona Alinejad; Russell Lloyd; Duncan Andrew Ridley