scholarly journals Breast Biomechanics: What Do We Really Know?

Physiology ◽  
2020 ◽  
Vol 35 (2) ◽  
pp. 144-156 ◽  
Author(s):  
Deirdre E. McGhee ◽  
Julie R. Steele
Keyword(s):  
Breast Reconstruction ◽  
Activities Of Daily Living ◽  
Daily Living ◽  
Three Dimensional ◽  
Research Needs ◽  
Full Spectrum ◽  
Structure And Motion ◽  
Breast Motion

Although half the world’s population will develop breasts, there is limited research documenting breast structure or motion. Understanding breast structure and motion, however, is imperative for numerous applications, such as breast reconstruction, breast modeling to better diagnose and treat breast pathologies, and designing effective sports bras. To be impactful, future breast biomechanics research needs to fill gaps in our knowledge, particularly related to breast composition and density, and to improve methods to accurately measure the complexities of three-dimensional breast motion. These methods should then be used to investigate breast biomechanics while individuals, who represent the full spectrum of women in the population, participate in a broad range of activities of daily living and recreation.

In-vivo confirmation of the use of the dart thrower’s motion during activities of daily living

2012 ◽  
Vol 39 (4) ◽  
pp. 373-378 ◽  
Author(s):  
G.H.O. Brigstocke ◽  
A. Hearnden ◽  
C. Holt ◽  
G. Whatling
Keyword(s):  
Activities Of Daily Living ◽  
Motion Capture ◽  
Daily Living ◽  
Three Dimensional ◽  
Wrist Motion ◽  
Radiocarpal Joint ◽  
Infra Red ◽  
Wrist Function ◽  
Midcarpal Joint

The dart thrower’s motion is a wrist rotation along an oblique plane from radial extension to ulnar flexion. We report an in-vivo study to confirm the use of the dart thrower’s motion during activities of daily living. Global wrist motion in ten volunteers was recorded using a three-dimensional optoelectronic motion capture system, in which digital infra-red cameras track the movement of retro-reflective marker clusters. Global wrist motion has been approximated to the dart thrower’s motion when hammering a nail, throwing a ball, drinking from a glass, pouring from a jug and twisting the lid of a jar, but not when combing hair or manipulating buttons. The dart thrower’s motion is the plane of global wrist motion used during most activities of daily living. Arthrodesis of the radiocarpal joint instead of the midcarpal joint will allow better wrist function during most activities of daily living by preserving the dart thrower’s motion.

Three-dimensional dynamic hip contact area and pressure distribution during activities of daily living

2006 ◽  
Vol 39 (11) ◽  
pp. 1996-2004 ◽  
Author(s):  
H. Yoshida ◽  
A. Faust ◽  
J. Wilckens ◽  
M. Kitagawa ◽  
J. Fetto ◽  
...  
Keyword(s):  
Activities Of Daily Living ◽  
Pressure Distribution ◽  
Contact Area ◽  
Daily Living ◽  
Three Dimensional

Three-Dimensional Motion of the Shoulder Complex during Activities of Daily Living in Youths with Hypermobile Ehlers-Danlos Syndrome

2021 ◽  
Vol 102 (10) ◽  
pp. e109
Author(s):  
Joshua Leonardis ◽  
Anahita Qashqai ◽  
Olivia Wilwert ◽  
Alyssa Schnorenberg ◽  
Michael Muriello ◽  
...  
Keyword(s):  
Activities Of Daily Living ◽  
Daily Living ◽  
Three Dimensional ◽  
Ehlers Danlos Syndrome ◽  
Shoulder Complex ◽  
Danlos Syndrome

Three-Dimensional Joint Co-Ordination Strategies of the Upper Limb during Functional Activities

1996 ◽  
Vol 210 (1) ◽  
pp. 17-26 ◽  
Author(s):  
T M Barker ◽  
A C Nicol ◽  
I G Kelly ◽  
J P Paul
Keyword(s):  
Activities Of Daily Living ◽  
Upper Limb ◽  
Shoulder Joint ◽  
Daily Living ◽  
Three Dimensional ◽  
Angular Motion ◽  
Joint Motion ◽  
Functional Activities ◽  
Quantitative Parameters ◽  
Two Parameters

A triaxial flexible electrogoniometer has been developed to measure the three-dimensional angular motion of the shoulder joint during simulated activities of daily living. The motion of the elbow, forearm and wrist were also recorded and angle-angle diagrams were mathematically analysed to provide quantitative parameters regarding the control and co-ordination of the joints of the normal and the arthritic upper limb. Two parameters (slope and movement area quotient) were derived and used in the interpretation of joint motion during different activities.

scholarly journals THREE-DIMENSIONAL MULTI-SEGMENTED SPINE JOINT REACTION FORCES DURING COMMON WORKPLACE PHYSICAL DEMANDS/ACTIVITIES OF DAILY LIVING

2017 ◽  
Vol 29 (04) ◽  
pp. 1750025
Author(s):  
Scott P. Breloff ◽  
Li-Shan Chou
Keyword(s):  
Activities Of Daily Living ◽  
Daily Living ◽  
Reaction Force ◽  
Three Dimensional ◽  
Physical Demands ◽  
Stair Descent ◽  
Joint Reaction Forces ◽  
Spine Model ◽  
Reaction Forces ◽  
Joint Reaction

Objective: The quantification of inter-segmental spine joint reaction forces during common workplace physical demands. Background: Many spine reaction force models have focused on the L5/S1 or L4/L5 joints to quantify the vertebral joint reaction forces. However, the L5/S1 or L4/L5 approach neglects most of the intervertebral joints. Methods: The current study presents a clinically applicable and noninvasive model which calculates the spinal joint reaction forces at six different regions of the spine. Subjects completed four ambulatory activities of daily living: level walking, obstacle crossing, stair ascent, and stair descent. Results: Peak joint spinal reaction forces were compared between tasks and spine regions. Differences existed in the bodyweight normalized vertical joint reaction forces where the walking (8.05[Formula: see text][Formula: see text][Formula: see text]3.19[Formula: see text]N/kg) task had significantly smaller peak reaction forces than the stair descent (12.12[Formula: see text][Formula: see text][Formula: see text]1.32[Formula: see text]N/kg) agreeing with lower extremity data comparing walking and stair descent tasks. Conclusion: This method appears to be effective in estimating the joint reaction forces using a segmental spine model. The results suggesting the main effect of peak reactions forces in the segmental spine can be influenced by task.

The three-dimensional analysis of three thumb joints coordination in activities of daily living

2011 ◽  
Vol 26 (4) ◽  
pp. 371-376 ◽  
Author(s):  
Hwai-Ting Lin ◽  
Li-Chieh Kuo ◽  
Hsin-Yi Liu ◽  
Wen-Lan Wu ◽  
Fong-Chin Su
Keyword(s):  
Activities Of Daily Living ◽  
Dimensional Analysis ◽  
Daily Living ◽  
Three Dimensional

Can Computer-Assisted Total Knee Arthroplasty Support the Prediction of Postoperative Three-Dimensional Kinematics of the Tibiofemoral and Patellofemoral Joints at the Replaced Knee?

2020 ◽  
Author(s):  
Claudio Belvedere ◽  
Silvia Tamarri ◽  
Andrea Ensini ◽  
Stefano Durante ◽  
Maurizio Ortolani ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Activities Of Daily Living ◽  
Knee Arthroplasty ◽  
Daily Living ◽  
Surgical Navigation ◽  
Three Dimensional ◽  
Knee Kinematics ◽  
Computer Assisted ◽  
Total Knee

AbstractThe aim of this study was to analyze the extent to which postoperative patellofemoral joint (PFJ) kinematics assessed at 6-month follow-up after total knee arthroplasty (TKA) mimics the intraoperative kinematics after final component implantation. The study hypothesis, already proved in terms of tibiofemoral joint (TFJ) kinematics, is that the intraoperative assessment of PFJ kinematics after component implantation is also capable of predicting postoperative knee kinematics during activities of daily living. Twenty patients selected for TKA with patellar resurfacing were implanted using surgical navigation, including patellar component positioning via a novel computer-assisted procedure. This allowed for intraoperative TFJ and PFJ kinematic assessment after final component implantation. At 6-month follow-up, all patients were contacted for follow-up control; in addition to clinical examination, this implied postoperative kinematics assessments by three-dimensional video fluoroscopy of the replaced knee during standard activities of daily living. Several traditional PFJ, as well as TFJ, rotations and translations were calculated intra- and postoperatively and then statistically compared. Good postoperative replication of the intraoperative measurements was observed for most of PFJ variables analyzed, as well as those for TFJ. Relevant statistical analysis also supported the significant consistency between the intra- and postoperative measurements. Pertaining to the present findings on a statistical basis, intraoperative measurements performed at both TFJ and PFJ kinematics using a surgical navigation system under passive conditions, are predictive of the overall knee kinematics experienced at postoperative follow-ups by the same replaced knees in typical activities of daily living.

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