Effect of flip-flops on lower limb kinematics during walking: a cross-sectional study using three-dimensional gait analysis

BackgroundMandibular reconstruction is conventionally performed freehand, CAD/CAM-assisted, or by using partially adjustable resection aids. CAD/CAM-assisted reconstructions are usually done in cooperation with osteosynthesis manufacturers, which entails additional costs and longer lead time. The purpose of this study is to analyze an in-house, open-source software-based solution for virtual planning.Methods and MaterialsAll consecutive cases between January 2019 and April 2021 that underwent in-house, software-based (Blender) mandibular reconstruction with a free fibula flap (FFF) were included in this cross-sectional study. The pre- and postoperative Digital Imaging and Com munications in Medicine (DICOM) data were converted to standard tessellation language (STL) files. In addition to documenting general information (sex, age, indication for surgery, extent of resection, number of segments, duration of surgery, and ischemia time), conventional measurements and three-dimensional analysis methods (root mean square error [RMSE], mean surface distance [MSD], and Hausdorff distance [HD]) were used.ResultsTwenty consecutive cases were enrolled. Three-dimensional analysis of preoperative and virtually planned neomandibula models was associated with a median RMSE of 1.4 (0.4–7.2), MSD of 0.3 (-0.1–2.9), and HD of 0.7 (0.1–3.1). Three-dimensional comparison of preoperative and postoperative models showed a median RMSE of 2.2 (1.5–11.1), MSD of 0.5 (-0.6–6.1), and HD of 1.5 (1.1–6.5) and the differences were significantly different for RMSE (p < 0.001) and HD (p < 0.001). The difference was not significantly different for MSD (p = 0.554). Three-dimensional analysis of virtual and postoperative models had a median RMSE of 2.3 (1.3–10.7), MSD of -0.1 (-1.0–5.6), and HD of 1.7 (0.1–5.9).ConclusionsOpen-source software-based in-house planning is a feasible, inexpensive, and fast method that enables accurate reconstructions. Additionally, it is excellent for teaching purposes.

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Para Surfing Performance in Athletes With Lower Limb Amputations - A Cross-Sectional Study

Archives of Physical Medicine and Rehabilitation ◽

10.1016/j.apmr.2021.07.506 ◽

2021 ◽

Vol 102 (10) ◽

pp. e108

Author(s):

Maureen Johnson ◽

Heather David ◽

Mohan Ganesan

Keyword(s):

Lower Limb ◽

Cross Sectional Study ◽

Sectional Study ◽

Cross Sectional

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Gait analysis with videogrammetry can differentiate healthy elderly, mild cognitive impairment, and Alzheimer's disease: A cross-sectional study

Experimental Gerontology ◽

10.1016/j.exger.2019.110816 ◽

2020 ◽

Vol 131 ◽

pp. 110816 ◽

Cited By ~ 1

Author(s):

Felipe de Oliveira Silva ◽

José Vinícius Ferreira ◽

Jéssica Plácido ◽

Daniel Chagas ◽

Jomilto Praxedes ◽

...

Keyword(s):

Alzheimer’S Disease ◽

Alzheimer's Disease ◽

Cognitive Impairment ◽

Mild Cognitive Impairment ◽

Gait Analysis ◽

Cross Sectional Study ◽

Sectional Study ◽

Cross Sectional ◽

Healthy Elderly

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Concurrent assessments of lower limb loading patterns, mechanical muscle strength and functional performance in ACL-patients — A cross-sectional study

The Knee ◽

10.1016/j.knee.2013.06.002 ◽

2014 ◽

Vol 21 (1) ◽

pp. 66-73 ◽

Cited By ~ 24

Author(s):

A. Holsgaard-Larsen ◽

C. Jensen ◽

N.H.M. Mortensen ◽

P. Aagaard

Keyword(s):

Muscle Strength ◽

Lower Limb ◽

Functional Performance ◽

Cross Sectional Study ◽

Sectional Study ◽

Cross Sectional ◽

Limb Loading ◽

Loading Patterns

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Relationship between lower-limb muscle strength and functional independence among elderly people according to frailty criteria: a cross-sectional study

Sao Paulo Medical Journal ◽

10.1590/1516-3180.2014.1325669 ◽

2014 ◽

Vol 132 (5) ◽

pp. 282-289 ◽

Cited By ~ 16

Author(s):

Fernanda Sotello Batista ◽

Grace Angélica de Oliveira Gomes ◽

Maria José D'Elboux ◽

Fernanda Aparecida Cintra ◽

Anita Liberalesso Neri ◽

...

Keyword(s):

Muscle Strength ◽

Lower Limb ◽

Functional Independence ◽

Cross Sectional Study ◽

Limb Muscle ◽

Sectional Study ◽

Cross Sectional ◽

Elderly Outpatients ◽

The Mean ◽

Frailty Criteria

CONTEXT AND OBJECTIVE: Muscle strength and functional independence are considered to be determinants of frailty levels among elderly people. The aim here was to compare lower-limb muscle strength (LLMS) with functional independence in relation to sex, age and number of frailty criteria, and to ascertain the influence of these variables on elderly outpatients' independence.DESIGN AND SETTING: Quantitative cross-sectional study, in a tertiary hospital.METHODS: The study was conducted on 150 elderly outpatients of both sexes who were in a cognitive condition allowing oral communication, between October 2005 and October 2007. The following instruments were used: five-times sit-to-stand test (FTSST), Functional Independence Measurement (FIM) and Lawton's Instrumental Activities of Daily Living Scale (IADL). Descriptive, comparative, multivariate, univariate and Cronbach alpha analyses were performed.RESULTS: The mean time taken in the FTSST was 21.7 seconds; the mean score for FIM was 82.2 and for IADL was 21.2; 44.7% of the subjects presented 1-2 frailty criteria and 55.3% > 3 criteria. There was a significant association between LLMS and functional independence in relation to the number of frailty criteria, without homogeneity regarding sex and age. Functional independence showed significant influence from sex and LLMS.CONCLUSION: Elderly individuals with 1 or 2 frailty criteria presented greater independence in all FTSST scores. The subjects with higher LLMS presented better functional independence.

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