Stump/socket pressure profiles of the pressure cast prosthetic socket

Goh, James Cho‐Hong; Lee, Peter Vee Sin; Chong, Sook-Yee

doi:10.1016/s0268-0033(02)00206-1

Cited by 35 publications

(38 citation statements)

References 4 publications

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“…The measurement techniques involve either inserting a thin sensor mat between the socket and skin, or positioning the transducers through the socket with the sensing surface leveled at the skin (71)(72)(73)(74)(75)(76).…”

Section: Stresses At the Residual Limb / Prosthetic Socket Interfacementioning

confidence: 99%

Biomechanics of Pressure Ulcer in Body Tissues Interacting with External Forces during Locomotion

Mak

Zhang²,

Tam

2010

Annu. Rev. Biomed. Eng.

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Forces acting on the body via various external surfaces during locomotion are needed to support the body under gravity, control posture, and overcome inertia. Examples include the forces acting on the body via the seating surfaces during wheelchair propulsion, the forces acting on the plantar foot tissues via the insole during gait, and the forces acting on the residual limb tissues via the prosthetic socket during various movement activities.Excessive exposure to unwarranted stresses at the body support interfaces could lead to tissue breakdowns commonly known as pressure ulcers, presented often as deep tissue injuries around bony prominences and/or surface damages on the skin. In this paper, we review the literatures on how the involved tissues respond to epidermal loadings, taking into account both experimental and computational findings from in-vivo and in-vitro studies. In particular, related literatures on internal tissue deformation and stresses, microcirculatory responses, as well as histological, cellular and molecular observations are discussed.

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Section: Stresses At the Residual Limb / Prosthetic Socket Interfacementioning

confidence: 99%

Biomechanics of Pressure Ulcer in Body Tissues Interacting with External Forces during Locomotion

Mak

Zhang²,

Tam

2010

Annu. Rev. Biomed. Eng.

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“…Effective suspension systems and prosthetic components can improve a person with amputation's gait and decrease his or her energy expenditure [2][3]. Prosthetic limbs should have an intimate fit with the residual limb in order to replace the lost body part with a device that offers high levels of comfort and satisfaction [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Transtibial prosthetic suspension: Less pistoning versus easy donning and doffing

Gholizadeh

Osman²,

Eshraghi³

et al. 2012

JRRD

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Abstract-Poor suspension increases slippage of the residual limb inside the socket during ambulation. The main purpose of this article is to evaluate the pistoning at the prosthetic linersocket interface during gait and assess patients' satisfaction with two different liners. Two prostheses with seal-in and locking liners were fabricated for each of the 10 subjects with transtibial amputation. The Vicon motion system was used to measure the pistoning during gait. The subjects were also asked to complete a Prosthesis Evaluation Questionnaire. The results revealed higher pistoning inside the socket during gait with the locking liner than with the seal-in liner (p < 0.05). The overall satisfaction with the locking liner was higher (p < 0.05) because of the relative ease with which the patients could don and doff the device. As such, pistoning may not be the main factor that determines patients' overall satisfaction with the prosthesis and other factors may also contribute to comfort and satisfaction with prostheses. The article also verifies the feasibility of the Vicon motion system for measuring pistoning during gait.

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“…3,7,15,18,21,22,25,28,31 The stress state in the soft tissues of a lower limb amputee has been established in experimentation procedures using force transducers. 1,3,6,13,[18][19][20][21]23,24,30,31 However, the sensors used in the experimentation can produce stress concentrations over the soft tissues, can modify the gait, and the results are valid only at the point where the sensor is located. 22,23 All these experimental difficulties have favored the use of numerical methods like the finite element (FE) method to assess the stress-strain state in a lower limb stump.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of Donning Procedure of a Prosthetic Transfemoral Socket

Lacroix

Patiño

2011

Ann Biomed Eng

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Lower limb amputation is a severe psychological and physical event in a patient. A prosthetic solution can be provided but should respond to a patient-specific need to accommodate for the geometrical and biomechanical specificities. A new approach to calculate the stress-strain state at the interaction between the socket and the stump of five transfemoral amputees is presented. In this study the socket donning procedure is modeled using an explicit finite element method based on the patient-specific geometry obtained from CT and laser scan data. Over stumps the mean maximum pressure is 4 kPa (SD 1.7) and the mean maximum shear stresses are 1.4 kPa (SD 0.6) and 0.6 kPa (SD 0.3) in longitudinal and circumferential directions, respectively. Locations of the maximum values are according to pressure zones at the sockets. The stress-strain states obtained in this study can be considered more reliable than others, since there are normal and tangential stresses associated to the socket donning procedure.

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Stump/socket pressure profiles of the pressure cast prosthetic socket

Cited by 35 publications

References 4 publications

Biomechanics of Pressure Ulcer in Body Tissues Interacting with External Forces during Locomotion

Biomechanics of Pressure Ulcer in Body Tissues Interacting with External Forces during Locomotion

Transtibial prosthetic suspension: Less pistoning versus easy donning and doffing

Finite Element Analysis of Donning Procedure of a Prosthetic Transfemoral Socket

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