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Titre : | Trunk Muscle Characteristics: Differences Between Sedentary Adults With and Without Unilateral Lower Limb Amputation (2021) |
Auteurs : | Jaclyn Megan Sions ; Emma H. Beisheim ; Mark A. Hoggarth ; James M. Elliott ; Gregory E. Hicks ; Ryan T. Pohlig ; Mayank Seth |
Type de document : | Article |
Dans : | Archives of Physical Medicine and Rehabilitation (Vol. 102, n° 7, 2021) |
Article en page(s) : | p. 1331-1339 |
Note générale : | https://doi.org/10.1016/j.apmr.2021.02.008 |
Langues: | Anglais |
Descripteurs : |
HE Vinci Amputation chirurgicale ; Amyotrophies ; Atrophie ; Dos ; Échographie ; Imagerie par résonance magnétique ; Membres artificiels ; Muscles paravertébraux ; Réadaptation ; Reproductibilité des résultats |
Résumé : |
Objective
The primary purpose of this study was to compare trunk muscle characteristics between adults with and without unilateral lower limb amputation (LLA) to determine the presence of modifiable trunk muscle deficits (ie, impaired activity, reduced volume, increased intramuscular fat) evaluated by ultrasonography (US) and magnetic resonance imaging (MRI). We hypothesized that compared with adults without LLA (controls), individuals with transfemoral or transtibial LLA would demonstrate reduced multifidi activity, worse multifidi and erector spinae morphology, and greater side-to-side trunk muscle asymmetries. Design Cross-sectional imaging study. Setting Research laboratory and imaging center. Participants Sedentary adults (n=38 total) with LLA (n=9 transfemoral level; n=14 transtibial level) and controls without LLA (n=15). Interventions Not applicable. Main Outcome Measures We examined bilateral multifidi activity using US at levels L3/L4-L5/S1. MRI was performed using 3-dimensional quantitative fat-water imaging; bilateral L1-L5 multifidi and erector spinae were manually traced, and muscle volume (normalized to body weight) and percentage intramuscular fat were determined. Between-group and side-to-side differences were evaluated. Results Compared with adults without LLA, participants with LLA demonstrated reduced sound-side multifidi activity; those with transfemoral LLA had larger amputated-side multifidi volume, whereas those with transtibial LLA had greater sound- and amputated-side erector spinae intramuscular fat (P<.050 with transfemoral lla side-to-side differences in erector spinae volume as well multifidi and intramuscular fat were found> Conclusions Impaired trunk muscle activity and increased intramuscular fat may be modifiable targets for intervention after LLA. |
Disponible en ligne : | Oui |
En ligne : | https://login.ezproxy.vinci.be/login?url=https://www.sciencedirect.com/science/article/pii/S0003999321001787#! |