Age has a minimal effect on knee kinematics: A cross-sectional 3D/2D image-registration study of kneeling.

Autor: Galvin CR; Research School of Electrical, Energy and Materials Engineering, Australian National University, Ian Ross Building 31, North Road, Acton, ACT, 2601; Faculty of Health, University of Canberra, Locked Bag 1, 2601, Australia; Trauma and Orthopaedic Research Unit, Canberra Hospital. Woden, ACT, 2606, Australia. Electronic address: catherine.galvin@anu.edu.au., Perriman DM; The Australian National University, Acton, ACT, 2601, Australia; Faculty of Health, University of Canberra, Locked Bag 1, 2601, Australia; Trauma and Orthopaedic Research Unit, Canberra Hospital. Woden, ACT, 2606, Australia. Electronic address: diana.perriman@act.gov.au., Lynch JT; The Australian National University, Acton, ACT, 2601, Australia; Trauma and Orthopaedic Research Unit, Canberra Hospital. Woden, ACT, 2606, Australia. Electronic address: joe.lynch@act.gov.au., Pickering MR; University of New South Wales Canberra at ADFA, PO Box 7916, Canberra BC, ACT 2610, Australia; Trauma and Orthopaedic Research Unit, Canberra Hospital. Woden, ACT, 2606, Australia. Electronic address: m.pickering@adfa.edu.au., Newman P; Faculty of Health, University of Canberra, Locked Bag 1, 2601, Australia. Electronic address: phillip.newman@canberra.edu.au., Smith PN; The Australian National University, Acton, ACT, 2601, Australia; Trauma and Orthopaedic Research Unit, Canberra Hospital. Woden, ACT, 2606, Australia. Electronic address: psmith@orthoact.com.au., Scarvell JM; Faculty of Health, University of Canberra, Locked Bag 1, 2601, Australia; Trauma and Orthopaedic Research Unit, Canberra Hospital. Woden, ACT, 2606, Australia. Electronic address: jennie.scarvell@canberra.edu.au.
Jazyk: angličtina
Zdroj: The Knee [Knee] 2019 Oct; Vol. 26 (5), pp. 988-1002. Date of Electronic Publication: 2019 Aug 16.
DOI: 10.1016/j.knee.2019.07.012
Abstrakt: Introduction: Kneeling is an activity of daily living which becomes difficult with knee pathology and increasing age. This study aimed to capture kneeling kinematics in six-degrees-of-freedom in healthy adults as a function of age.
Methods: 67 healthy knee participants aged from 20 to 90 years were categorised into four 20-year age-groups. 3D knee kinematics were captured using 3D/2D image-registration of CT scan and fluoroscopy during kneeling. Kinematic variables of position, displacement and rate-of-change in six-degrees-of-freedom were compared between age-groups while controlling for University of California Los Angeles activity scale and the Assessment of Quality of Life physical score.
Results: Over the entire kneeling cycle there were few differences between the age-groups. Results are reported as pairwise contrasts. At 110° flexion, 80+ knees were more varus than 20-39 and 40-69 (4.9° (95%CI: 0.6°, 9.1°) and 6.4° (2.1°, 10.7°), respectively). At 120° flexion, the 80+ age-group femur was 5.5 (0.0, 11.0) mm more anterior than 20-39. Between 120° to maximum flexion, 80+ knees rotated into valgus more than 20-39, 40-59 and 60-79 (5.5° (1.2°, 9.8°); 5.5° (1.1°, 9.8°); and 4.5° (0.9°, 7.5°), respectively).
Conclusion: This is the first study to report kneeling knee kinematics of ageing using 3D/2D image registration. We found that ageing does not change knee kinematics under 80 years, and there are minimal changes between 120° and maximum flexion between the younger and 80+ age-groups. Thus, difficulty kneeling should not be considered to be an inevitable consequence of ageing.
(Copyright © 2019 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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