Sound side trunk muscles contribute to trunk control during prosthetic gait in persons with unilateral transfemoral amputation

2021 ◽  
Vol 90 ◽  
pp. 230-231
Author(s):  
S. Scharr ◽  
L. Khavvam ◽  
D.W.W. Heitzmann ◽  
M. Alimusaj ◽  
S.I. Wolf
Keyword(s):  
Trunk Muscles ◽  
Transfemoral Amputation ◽  
Trunk Control ◽  
Sound Side

Innovative alignment of sprinting prostheses for persons with transfemoral amputation: Exploratory study on a gold medal Paralympic athlete

2020 ◽  
pp. 030936462094691 ◽  
Author(s):  
Gian Luca Migliore ◽  
Nicola Petrone ◽  
Hiroaki Hobara ◽  
Ryu Nagahara ◽  
Kenji Miyashiro ◽  
...  
Keyword(s):  
Repeated Measures ◽  
Scientific Evidence ◽  
Gold Medal ◽  
Single Subject ◽  
Transfemoral Amputation ◽  
Sound Side ◽  
Walking Biomechanics ◽  
Full Speed ◽  
Reaction Forces ◽  
Definition Of

Background: Recommendations for the alignment of the socket and foot in the sprinting prosthesis of athletes with transfemoral amputation are either based on walking biomechanics or lack public scientific evidence. Objectives: To explore the biomechanical changes and the sensations of a gold medal Paralympic sprinter, while running with three bench alignments: a conventional reference (A0), an innovative alignment based on the biomechanics of elite able-bodied sprinters (A2), and an intermediate alignment (A1). Study design: Single subject with repeated measures. Methods: A1 and A2 feature a progressively greater socket tilt and a plantar-flexed foot compared to A0. The 30-year-old female athlete trained with three prostheses, one per alignment, for at least 2 months. We administered a questionnaire to collect her impressions. Then, she ran on a treadmill at full speed (5.5 m/s). We measured the kinematics and moments of the prosthetic side, and the ground reaction forces of both sides. Results: A2 reduced the prosthetic side hip extension at foot-off while preserving hip range of motion, decreased the impulse of the hip moment, and increased the horizontal propulsion, leaving sufficient margin to prevent knee buckling without increasing sound side braking forces. Biomechanical outcomes matched well with subjective impressions. Conclusions: A2 appears promising to improve the performance and comfort of sprinters with transfemoral amputation, without compromising safety. Clinical relevance bservation of elite able-bodied sprinters led to the definition of a new specific alignment for the sprinting prosthesis of athletes with transfemoral amputation, which appears promising to improve performance and comfort, without compromising safety. This may constitute a major improvement compared to alignments based on walking biomechanics.

scholarly journals Contribution of Trunk Muscles to Upright Sitting with Segmental Support in Children with Spinal Cord Injury

Children ◽  
2020 ◽  
Vol 7 (12) ◽  
pp. 278
Author(s):  
Goutam Singh ◽  
Sevda Aslan ◽  
Beatrice Ugiliweneza ◽  
Andrea Behrman
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Surface Electromyography ◽  
Muscle Activation ◽  
Trunk Muscles ◽  
Typically Developing ◽  
Trunk Control ◽  
Rectus Abdominus ◽  
Cord Injury

To investigate and compare trunk control and muscle activation during uncompensated sitting in children with and without spinal cord injury (SCI). Static sitting trunk control in ten typically developing (TD) children (5 females, 5 males, mean (SD) age of 6 (2)y) and 26 children with SCI (9 females, 17 males, 5(2)y) was assessed and compared using the Segmental Assessment of Trunk Control (SATCo) test while recording surface electromyography (EMG) from trunk muscles. The SCI group scored significantly lower on the SATCo compared to the TD group. The SCI group produced significantly higher thoracic-paraspinal activation at the lower-ribs, and, below-ribs support levels, and rectus-abdominus activation at below-ribs, pelvis, and no-support levels than the TD group. The SCI group produced significantly higher lumbar-paraspinal activation at inferior-scapula and no-support levels. Children with SCI demonstrated impaired trunk control with the ability to activate trunk muscles above and below the injury level.

Analysis and Evaluating of Flexible Ankle Foot Orthosis for Drop Foot Deformity

2020 ◽  
Vol 398 ◽  
pp. 41-47 ◽  
Author(s):  
Fahad Mohanad Kadhim ◽  
Marfa Salah Hayal
Keyword(s):  
Composite Material ◽  
Reaction Force ◽  
Good Control ◽  
Trunk Muscles ◽  
Von Mises Stress ◽  
Element Analysis ◽  
Experimental Part ◽  
Sound Side ◽  
The Difference ◽  
Von Mises

This work involved two major parts: the first Part is the experimental part included manufacturing ankle foot orthotics, measure the (the reaction force of the ground, pressure distribution) for both normal (healthy) and sound side (intake) legs in two case, the first measurement when the patient walking without orthosis while the second test when the patient dressed up the flexible (AFO). The pressure generated between leg and calf part is measured by F-Socket devise. The experimental part also consist test the mechanical properties of a suggestion composite material. The second Part is the (FEM) finite element analysis for numerical simulation part during which the stresses are calculated using ANSYS 14.5 software. Experimental work was done on a case study suffering from low level spinal cord trauma he has good control of the trunk muscles but the muscle weakness and nerve damage for right leg. The patient with age, weight of 30years, 75kg, respectively. The Results show the parameters of test for both legs (left and right) in two cases. The results show that the data of the gait cycle in the case of the patient wearing the brace is more acceptable and we notice improvement in the performance of walking steps and reduce the difference between the infected leg and natural and this indicates the good evaluation of this orthosis. Max pressure obtained is 1.53*10^5MPa from F .Socket at calf region .Max stress Calculated at Posterior ankle joint because it is flexible Position The equivalent Von-Mises stress and the safety factor for fatigue of the composite material gave good results this led to the longer life design.

scholarly journals Effect of Proprioceptive Neuromuscular Facilitation Neck Pattern Exercises on Balance in Stroke - An Evidence Based Study

2021 ◽  
Vol 6 (3) ◽  
pp. 48-53
Author(s):  
Twinkle Mahesh Mesaniya ◽  
Jayshree Sutaria
Keyword(s):  
Case Series ◽  
Trunk Muscles ◽  
Single Subject ◽  
Single Subject Design ◽  
Trunk Control ◽  
Level Of Evidence ◽  
Language Functions ◽  
Proprioceptive Neuromuscular Facilitation ◽  
Level Of Consciousness ◽  
The Brain

Background: Stroke is the sudden loss of neurological function which is caused by an interruption of blood flow to the brain. A variety of focal deficits are possible that include changes in level of consciousness and impairments of sensory, motor, cognitive, perceptual and language functions. Trunk muscles are impaired in the patients with stroke so there is diminished ability to maintain balance because of weakened muscle strength of trunk. Resistance to neck motion during PNF provides irradiation to the trunk muscles. Purpose: The purpose is to study the scientific evidences regarding the effect of proprioceptive neuromuscular facilitation neck pattern exercises on balance in stroke. Methodology: A search for relevant articles was carried out using key words- Neck proprioceptive neuromuscular facilitation, Balance, Trunk control and Stroke. Search engines used were Google Scholar, PubMed, PEDro, ScienceDirect and ResearchGate. Studies were selected from year 2011-2020. Eight studies were included in which there were 6 randomized control trial, 1 case series, 1 single subject design. Results: All the 8 articles concluded that proprioceptive neuromuscular facilitation neck pattern exercise is effective in improving balance in the patients with stroke. (level of evidence :1b,2a,4,5) Conclusion: Based on evidences, it can be concluded that proprioceptive neuromuscular facilitation neck pattern exercise is found to be effective in improving balance in the patients with stroke. Clinical Implication: Proprioceptive neuromuscular facilitation neck pattern exercises can be used as an adjunct to other treatment in improving balance in stroke. Keywords: Neck proprioceptive neuromuscular facilitation, Balance, Trunk control and Stroke.

scholarly journals Is There a Sex Difference in Trunk Neuromuscular Control among Recreational Athletes during Cutting Maneuvers?

2021 ◽  
pp. 743-750
Author(s):  
Guillaume Mornieux ◽  
Dominic Gehring ◽  
Albert Gollhofer
Keyword(s):  
Injury Risk ◽  
Neuromuscular Control ◽  
Trunk Muscles ◽  
Trunk Control ◽  
Joint Injury ◽  
Recreational Athletes ◽  
Peak Knee ◽  
Knee Abduction ◽  
Knee Joint Injury ◽  
Weight Acceptance

Trunk motion is most likely to influence knee joint injury risk, but little is known about sex-related differences in trunk neuromuscular control during changes of direction. The purpose of the present study was to test whether differences in trunk control between males and females during changes of direction exist. Twelve female and 12 male recreational athletes (with at least 10 years of experience in team sport) performed unanticipated changes of direction with 30° and 60° cut angles, while 3D trunk and leg kinematics, ground reaction forces and trunk muscles electromyography were recorded. Trunk kinematics at the time of peak knee abduction moment and directed co-contraction ratios for trunk muscles during the pre-activation and weight acceptance phases were determined. None of the trunk kinematics and co-contraction ratio variables, nor peak knee abduction moment differed between sexes. Compared to the 30° cut, trunk lateral flexion remained unchanged and trunk external rotation was reduced (p < 0.001; η²p (partial eta squared for effect size) = 0.78), while peak knee abduction moment was increased (p < 0.001; η²p = 0.84) at 60°. The sharper cutting angle induced muscle co-contraction during the pre-activation directed less towards trunk flexors (p < 0.01; η²p = 0.27) but more towards trunk medial flexors and rotators opposite to the movement direction (p < 0.001; η²p > 0.46). However, muscle co-contraction during the weight acceptance phase remained comparable between 30° and 60°. The lack of sex-related differences in trunk control does not explain knee joint injury risk discrepancies between sexes during changes of direction. Trunk neuromuscular strategies during sharper cutting angles revealed the importance of external oblique muscles to maintain trunk lateral flexion at the expense of trunk rotation. This provides new information for trunk strength training purposes for athletes performing changes of direction.

scholarly journals Trunk Muscle Activation Patterns During Standing Turns in Patients With Stroke: An Electromyographic Analysis

2021 ◽  
Vol 12 ◽  
Author(s):  
I-Hsuan Chen ◽  
Pei-Jung Liang ◽  
Valeria Jia-Yi Chiu ◽  
Shu-Chun Lee
Keyword(s):  
Muscle Activation ◽  
Trunk Muscle ◽  
Erector Spinae ◽  
Trunk Muscles ◽  
Trunk Control ◽  
Activation Patterns ◽  
Muscle Activation Patterns ◽  
Paretic Side ◽  
External Oblique ◽  
Electromyographic Analysis

Recent evidence indicates that turning difficulty may correlate with trunk control; however, surface electromyography has not been used to explore trunk muscle activity during turning after stroke. This study investigated trunk muscle activation patterns during standing turns in healthy controls (HCs) and patients with stroke with turning difficulty (TD) and no TD (NTD). The participants with stroke were divided into two groups according to the 180° turning duration and number of steps to determine the presence of TD. The activation patterns of the bilateral external oblique and erector spinae muscles of all the participants were recorded during 90° standing turns. A total of 14 HCs, 14 patients with TD, and 14 patients with NTD were recruited. The duration and number of steps in the turning of the TD group were greater than those of the HCs, independent of the turning direction. However, the NTD group had a significantly longer turning duration than did the HC group only toward the paretic side. Their performance was similar when turning toward the non-paretic side; this result is consistent with electromyographic findings. Both TD and NTD groups demonstrated increased amplitudes of trunk muscles compared with the HC groups. Their trunk muscles failed to maintain consistent amplitudes during the entire movement of standing turns in the direction that they required more time or steps to turn toward (i.e., turning in either direction for the TD group and turning toward the paretic side for the NTD group). Patients with stroke had augmented activation of trunk muscles during turning. When patients with TD turned toward either direction and when patients with NTD turned toward the paretic side, the flexible adaptations and selective actions of trunk muscles observed in the HCs were absent. Such distinct activation patterns during turning may contribute to poor turning performance and elevate the risk of falling. Our findings provide insights into the contribution and importance of trunk muscles during turning and the association with TD after stroke. These findings may help guide the development of more effective rehabilitation therapies that target specific muscles for those with TD.

The influence of continuous local wound infusion on postoperative pain in patients undergoing transfemoral amputation

VASA ◽  
2015 ◽  
Vol 44 (5) ◽  
pp. 381-386 ◽  
Author(s):  
Christian Uhl ◽  
Thomas Betz ◽  
Andrea Rupp ◽  
Markus Steinbauer ◽  
Ingolf Töpel
Keyword(s):  
Pain Management ◽  
Pilot Study ◽  
Local Anaesthetic ◽  
Phantom Pain ◽  
Transfemoral Amputation ◽  
Postoperative Wound ◽  
Stump Pain ◽  
Management Protocol ◽  
Group 2 ◽  
Group 1

Abstract. Summary: Background: This pilot study was set up to examine the effects of a continuous postoperative wound infusion system with a local anaesthetic on perioperative pain and the consumption of analgesics. Patients and methods: We included 42 patients in this prospective observational pilot study. Patients were divided into two groups. One group was treated in accordance with the WHO standard pain management protocol and in addition to that received a continuous local wound infusion treatment (Group 1). Group 2 was treated with analgesics in accordance with the WHO standard pain management protocol, exclusively. Results: The study demonstrated a significantly reduced postoperative VAS score for stump pain in Group 1 for the first 5 days. Furthermore, the intake of opiates was significantly reduced in Group 1 (day 1, Group 1: 42.1 vs. Group 2: 73.5, p = 0.010; day 2, Group 1: 27.7 vs. Group 2: 52.5, p = 0.012; day 3, Group 1: 23.9 vs. Group 2: 53.5, p = 0.002; day 4, Group 1: 15.7 vs. Group 2: 48.3, p = 0.003; day 5, Group 1 13.3 vs. Group 2: 49.9, p = 0.001). There were no significant differences between the two groups, neither in phantom pain intensity at discharge nor postoperative complications and death. Conclusions: Continuous postoperative wound infusion with a local anaesthetic in combination with a standard pain management protocol can reduce both stump pain and opiate intake in patients who have undergone transfemoral amputation. Phantom pain was not significantly affected.

Estimation of EMG activity of trunk muscles in manual lifting tasks based on trunk dynamics using the fuzzy relational rule network

2003 ◽  
Author(s):  
Waldemar Karwowski ◽  
Adam Gaweda ◽  
William S. Marras ◽  
Kermit Davis ◽  
Jacek Zurada
Keyword(s):  
Trunk Muscles ◽  
Emg Activity ◽  
Manual Lifting
Sign in / Sign up

Export Citation Format

Share Document