Loading...
Changes in total lower limb support moment in middle-aged patients undergoing arthroscopic partial meniscectomy — A longitudinal observational cohort study
Holsgaard-Larsen, Anders Thorlund, Jonas B. Blackmore, Tim Creaby, Mark W.
Holsgaard-Larsen, Anders
Thorlund, Jonas B.
Blackmore, Tim
Creaby, Mark W.
Abstract
Background Patients with a meniscal tear are frequently treated with arthroscopic partial meniscectomy (APM) which may alter the net extension moment across the entire lower limb – known as the total support moment (TSM). Purpose To investigate changes in TSM during walking in patients undergoing APM. Methods Three-dimensional motion analysis of walking was performed in individuals with meniscal tear prior to APM and 12 months after. Peak TSM, positive ankle (ASM), knee (KSM), and hip (HSM) moments at the time of peak TSM were calculated together with corresponding angular impulses. Results Patients (n = 20) were middle aged (45.9 ± 6.3 years) and the majority male (70%). At baseline a lower KSM (mean [95%CI]; 0.59 Nm/BM · HT% [− 1.93; 3.11], P = 0.048) and a trend towards lower peak TSM (0.46 Nm/BM · HT% [− 1.82; 2.78], P = 0.099) were observed for the APM leg compared with the contralateral. Pre- versus post-APM change scores indicated a relative decrease in loading of the contralateral leg for peak TSM (− 0.49 Nm/BM · HT% [− 0.96; − 0.01], P = 0.047) and a trend towards a relative increase in loading of the APM leg for peak KSM (− 0.41 Nm/BM · HT% [− 0.92; 0.09], P = 0.105). No differences were observed in angular impulse variables. Conclusions Prior to APM a strategy to unload the injured knee was manifested by reduced KSM and a tendency to a reduced peak TSM. A more equal distribution of joint moments between injured and contralateral legs was observed 12 months following APM.
Keywords
Meniscectomy, Support moment, Gait, Knee, Biomechanics, Joint loading
Date
2019
Type
Journal article
Journal
The Knee
Book
Volume
26
Issue
3
Page Range
595-602
Article Number
ACU Department
School of Behavioural and Health Sciences
Faculty of Health Sciences
Faculty of Health Sciences
Relation URI
Source URL
Event URL
Open Access Status
License
File Access
Controlled