scholarly journals Discomfort/Pain and Tissue Oxygenation at the Lower Limb During Circumferential Compression: Application to Soft Exoskeleton Design

Author(s):  
Tjasa Kermavnar ◽  
Kevin J. O’Sullivan ◽  
Adam de Eyto ◽  
Leonard W. O’Sullivan

Objective To establish the relationship between circumferential compression on the lower limb during simulated ramp and staircase profile loading, and the resultant relationship with discomfort/pain and tissue oxygenation. Background Excessive mechanical loading by exoskeletons on the body can lead to pressure-related soft tissue injury. Potential tissue damage is associated with objective oxygen deprivation and accompanied by subjective perception of pain and discomfort. Method Three widths of pneumatic cuffs were inflated at the dominant thigh and calf of healthy participants using two inflation patterns (ramp and staircase), using a computer-controlled pneumatic rig. Participants rated discomfort on an electronic visual analog scale and deep tissue oxygenation was monitored using near infrared spectroscopy. Results Circumferential compression with pneumatic cuffs triggered discomfort and pain at lower pressures at the thigh, with wider cuffs, and with a ramp inflation pattern. Staircase profile compression caused an increase in deep tissue oxygenation, whereas the ramp profile compression decreased it. Conclusion Discomfort and pain during circumferential compression at the lower limb is related to the width of pneumatic cuffs, the inflation pattern, and the volume of soft tissue at the assessment site. The occurrence of pain is also possibly related to the decrease in deep tissue oxygenation during compression. Application Our findings can be used to inform safe and comfortable design of soft exoskeletons to avoid discomfort and possible soft tissue injury.

2021 ◽  
Vol 27 (8) ◽  
pp. 804-806
Author(s):  
Zhilin Zhu ◽  
Yuanyuan Ma

ABSTRACT Introduction: the assessment and proper management of lower extremity soft tissue injury is very important. Because the mechanism and clinical manifestations of lower extremity soft tissue injury are varied, it is necessary to make an accurate assessment based on the specific situation of the patient. Objective: To explore the mechanism and rehabilitation methods of lower limb soft tissue sports injury. Methods: In clinical practice, external application of Chinese herbal medicine combined with cold compresses, massage, pot dipping, hot immersion irradiation and other methods were used. Results: The self-made Chinese herbal medicine external ointment, swelling and pain relieving Chinese herbal medicine wine combined with electromagnetic wave therapy instrument is one of the commonly used and effective methods to treat sports injury of lower extremity soft tissue in health care experimental centers. It has the most remarkable effect on local burning, stasis, swelling and pain caused by the soft tissue injury of various lower limbs in various parts of the human body. Conclusions: Timely functional rehabilitation training after sports injury can promote the functional healing and rehabilitation of the body after injury, maintaining the good functional state of each organ system of the body. Level of evidence II; Therapeutic studies - investigation of treatment results.


Author(s):  
Richa Garg

The aim of this study was to evaluate and compare the efficacy and safety of serratiopeptidase and aceclofenac in reducing swelling and pain following soft tissue injury. This study included 100 patients with soft tissue injury to upper limb, lower limb or both. They were randomly divided into two groups of 50 each to receive serratiopeptidase and aceclofenac. Evaluation of efficacy was made using tape measurement (for swelling), and visual analogue scale (for pain) on day 0, week 1and week 2. Serratiopeptidase showed significant anti-inflammatory effect and mild analgesic effect. None of the patient was required to be put on another analgesic or any alteration in treatment. Aceclofenac showed superior analgesic effect as compared to serratiopeptidase. Mild to moderate adverse effects were reported. The most common adverse effect reported was dyspepsia. All were mild and did not require any alteration or discontinuation of treatment.


Author(s):  
Arjan Buis ◽  
Francesco Guarato ◽  
Jason Law ◽  
Zoe Ralston ◽  
Anna Courtney

BACKGROUND: Background:  Acoustic emission from structures subject to external loads can be monitored to detect internal damage before destruction occurs. It is hypothesised that deformation of soft tissue will emit acoustic signals which may aid early detection of deep tissue injury, particularly in the lower limb amputee population. No previous studies have applied this method to biological soft tissue. OBJECTIVE: To determine if skeletal muscle tissue produced measurable acoustic emission during dynamic tensile loading with the aim to establish a reliable biomarker for lower limb prosthetic socket fit quantification and prosthetic health. STUDY DESIGN: Experimental study design. METHODOLOGY: In this research article, Sus scrofa domesticus (pork) muscle and Gallus gallus domesticus (chicken) muscle specimens (10mm width x 45mm height x 4mm depth) were submerged into saline baths while an Instron testing machine applied displacement controlled tensile loads. Time stamped, load, displacement and acoustic signal (hydrophone) data was collected. FINDINGS: The pork muscle was tested to failure being subject to tensile load. Prior to failure, no peaks were found in the amplitude or frequency of the acoustic signal to indicate that either tissue deformation or failure was occurring.  Data gathered during chicken muscle testing was inconclusive. CONCLUSIONS: Results displayed that tensile testing of pork intercostal muscle produced tissue deformation and failure with no detectable change in the amplitude or frequency of the background sound during tensile loading. The other specimens failed before reaching the same levels of tensile load. Further studies are required in order to address the numerous limitations of this study. LAYMAN’S ABSTRACT Humans are made of biological material, some are hard such as the skeleton and some are soft as in muscles. When the soft tissue are under a too high stress condition, such as in diabetic patients, we talk about deep tissue injury. It has been proven that deep tissue injury negatively impacts the affected persons’ quality of life, through a reduction in mobility and ability levels. Deep tissue injury is additionally very costly to health care systems worldwide. Unfortunately, those with lower limb dysvascularity (in particular, amputees with limb loss secondary to dysvascularity and/or neuropathy) are at heightened risk of further damage from deep tissue injury.  Therefore, this study ultimately aims to be used as a basis in order to determine if, at some stage, it would be possible to detect tissue that was ‘at risk’ of developing deep tissue injury. ARTICLE PDF LINK: https://jps.library.utoronto.ca/index.php/cpoj/article/view/30354/23004 How to cite: Buis A, Guarato F, Law J, Ralston Z, Courtney A. A feasibility study to investigate if there is a correlation between soft tissue deformation and acoustic emission. Canadian Prosthetics & Orthotics Journal, Volume 1, Issue 1, No 5, 2018. DOI: https://doi.org/10.33137/cpoj.v1i1.30354


Symmetry ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1586
Author(s):  
Łukasz Pawik ◽  
Malwina Pawik ◽  
Magdalena Karwacka ◽  
Emilia Wysoczańska ◽  
Aleksandra Schabowska ◽  
...  

Background: Most injuries in competitive sports are due to overstrain and excessive muscular and fascial tension. This study aimed to assess the effects of a single session of fascial therapy on balance and lower limb weight-bearing in professional athletes following a lower limb soft-tissue injury. Methods: A pedobarographic platform was used to assess the weight-bearing on both lower limbs and corporal balance. A total of 41 athletes with an acute soft-tissue injury involving the quadriceps femoris muscle were included in the study. Each patient underwent myofascial therapy in the injured limb only. The therapy was intended to release tension and improve proprioception. Results: The injured and healthy limbs showed significant asymmetry in body weight distribution. Before treatment, the patients bore less weight on the injured limb than on the healthy limb. After fascial therapy, eyes-closed tests showed an improved weight distribution symmetry between the two lower limbs. There were no significant differences in the values of the evaluated balance parameters between those measured at baseline and those measured after the therapy, measured after the rehabilitation session. Conclusions: A single fascial therapy session has a beneficial effect on corporal balance in runners with an injured lower limb.


Injury ◽  
1992 ◽  
Vol 23 (4) ◽  
pp. 280-281 ◽  
Author(s):  
T.B.M. Niazi ◽  
R.P. Joshi ◽  
P.G. Johnson

Author(s):  
John Mukhopadhaya ◽  
Arvind Gupta ◽  
Amit K. Sinha

<p class="abstract">Massive segmental bone defects of tibia present as a challenging task to manage specially when associated with extensive soft tissue injury. A 30 year old male presented to Paras HMRI hospital, Patna, post road traffic accident with Gustilo Anderson 3B comminuted open tibia shaft fracture and with an external fixator in situ with a grossly inflamed and infected wound. Initially patient was managed with serial wound debridement and skin grafting was done early to obtain adequate soft tissue coverage. The patient then underwent application of Ilizarov external fixator with plan of one level fibular osteotomy for ipsilateral fibular transport. With good outcome of the procedure clinically and radiologically, Ilizarov fixator was removed after time duration of about 1.3 years and limb was immobilized in plaster of Paris (POP) cast which was removed after 8 weeks. Within 1 month of removal of POP cast the patient presented to hospital again with complaints of pain and instability when his leg was run over by his child’s bicycle while playing. Diagnosed as fracture of proximal (transported) fibula he was managed then with locking plates; one of which was used as an internal fixator and the other as external fixator which was outside the body and acted as a support to the operated limb. After about 1 year the external locking plate was removed and patient was able to bear weight on his extremities. Despite various modalities to treat massive tibial gap, fibular transport procedure with Ilizarov external fixator seems to be the most viable option.</p>


1992 ◽  
Vol 20 (5) ◽  
pp. 601-603 ◽  
Author(s):  
Peter Aspelin ◽  
Olle Ekberg ◽  
Ola Thorsson ◽  
Mats Wilhelmsson ◽  
Nils Westlin

1987 ◽  
Vol 148 (2) ◽  
pp. 458-458 ◽  
Author(s):  
DR Pennes ◽  
WA Phillips

Sign in / Sign up

Export Citation Format

Share Document