MyMedR

Clinical evaluation of two prosthetic suspension systems in a bilateral transtibial amputee

Gholizadeh H, Abu Osman NA, Kamyab M, Eshraghi A, Lúvíksdóttir AG, Wan Abas WA

Am J Phys Med Rehabil, 2012 Oct;91(10):894-8.

The effects of Seal-In X5 and Dermo liner (Össur) on suspension and patient's comfort in lower limb amputees are unclear. In this report, we consider the case of a 51-yr-old woman with bilateral transtibial amputation whose lower limbs were amputated because of peripheral vascular disease. The subject had bony and painful residual limbs, especially at the distal ends. Two prostheses that used Seal-In X5 liners and a pair of prostheses with Dermo liners were fabricated, and the subject wore each for a period of 2 wks. Once the 2 wks had passed, the pistoning within the socket was assessed and the patient was questioned as to her satisfaction with both liners. This study revealed that Seal-In X5 liner decreased the residual limb pain experienced by the patient and that 1-2 mm less pistoning occurred within the socket compared with the Dermo liner. However, the patient needed to put in extra effort for donning and doffing the prosthesis. Despite this, it is clear that the Seal-In X5 liner offers a viable alternative for individuals with transtibial amputations who do not have enough soft tissue around the bone, especially at the end of the residual limb.

Satisfaction and problems experienced with transfemoral suspension systems: a comparison between common suction socket and seal-in liner

Gholizadeh H, Abu Osman NA, Eshraghi A, Ali S, Yahyavi ES

Arch Phys Med Rehabil, 2013 Aug;94(8):1584-9.

PMID: 23262380 DOI: 10.1016/j.apmr.2012.12.007

To compare a seal-in liner with the common suction socket with regards to patient satisfaction and problems experienced with the prosthesis.

Quantitative and qualitative comparison of a new prosthetic suspension system with two existing suspension systems for lower limb amputees

Eshraghi A, Abu Osman NA, Karimi MT, Gholizadeh H, Ali S, Wan Abas WA

Am J Phys Med Rehabil, 2012 Dec;91(12):1028-38.

PMID: 23168378 DOI: 10.1097/PHM.0b013e318269d82a

The objectives of this study were to compare the effects of a newly designed magnetic suspension system with that of two existing suspension methods on pistoning inside the prosthetic socket and to compare satisfaction and perceived problems among transtibial amputees.

Re: Re: "Quantitative and Qualitative Comparison of a New Prosthetic Suspension System with Two Existing Suspension Systems for Lower Limb Amputees"

Eshraghi A, Osman NA, Karimi MT, Gholizadeh H, Ali S, Wan Abas WA

Am J Phys Med Rehabil, 2015 Jul;94(7):e60.

PMID: 25888670 DOI: 10.1097/PHM.0000000000000304

Prosthesis donning and doffing questionnaire: Development and validation

Abu Osman NA, Eshraghi A, Gholizadeh H, Wan Abas WAB, Lechler K

Prosthet Orthot Int, 2017 Dec;41(6):571-578.

PMID: 28190376 DOI: 10.1177/0309364617690397

OBJECTIVES: To develop a questionnaire that specifically evaluates the ability of trans-tibial amputees to don and doff a prosthesis and to investigate the psychometric properties of the newly developed questionnaire.

BACKGROUND: Prosthesis should be donned and doffed few times during the day and night; thus, it is important to measure ease of donning and doffing.

STUDY DESIGN: A cross-sectional study.

METHODS: The questionnaire was designed and evaluated by a group of experts. The final questionnaire was administered to 50 individuals with trans-tibial amputation. A test-retest study was also conducted on 20 amputees to assess the repeatability of questionnaire items.

RESULTS: The prosthesis donning and doffing questionnaire was developed and tested through a pilot study. Based on Kappa index, the questionnaire items showed correlation coefficients greater than 0.7, which indicate good reliability and repeatability. The majority of the participants had good hand dexterity (80%) and could perform all types of grasps. The mean satisfaction scores with donning and doffing were 69.9 and 81.4, respectively. Most of the respondents needed to don and doff the prosthesis 3.44 times per day. Based on a 7-point score, the total scores ranged between 3 and 7.

CONCLUSION: The prosthesis donning and doffing questionnaire items showed good psychometric properties. A scoring method was suggested based on the pilot sample, which requires further evaluation to be able to differentiate between more suspension types. A larger international multicenter evaluation is required in the future to measure the responsiveness of the scales. This questionnaire will be useful in the evaluation of the ability of amputees to don and doff a trans-tibial limb prosthesis. Clinical relevance Donning and doffing of prostheses are challenging tasks for many lower limb amputees. The prosthesis donning and doffing questionnaire, on its own or combined with other prosthetic evaluation questionnaires, has the potential to help manufacturers, clinicians, and researchers gain knowledge and improve the donning and doffing qualities of prostheses.

Fulltext The capability of fiber Bragg grating sensors to measure amputees' trans-tibial stump/socket interface pressures

Al-Fakih EA, Osman NA, Eshraghi A, Adikan FR

Sensors (Basel), 2013 Aug 12;13(8):10348-57.

PMID: 23941909 DOI: 10.3390/s130810348

This study presents the first investigation into the capability of fiber Bragg grating (FBG) sensors to measure interface pressure between the stump and the prosthetic sockets of a trans-tibial amputee. FBG element(s) were recoated with and embedded in a thin layer of epoxy material to form a sensing pad, which was in turn embedded in a silicone polymer material to form a pressure sensor. The sensor was tested in real time by inserting a heavy-duty balloon into the socket and inflating it by using an air compressor. This test was conducted to examine the sensitivity and repeatability of the sensor when subjected to pressure from the stump of the trans-tibial amputee and to mimic the actual environment of the amputee's Patellar Tendon (PT) bar. The sensor exhibited a sensitivity of 127 pm/N and a maximum FSO hysteresis of around ~0.09 in real-time operation. Very good reliability was achieved when the sensor was utilized for in situ measurements. This study may lead to smart FBG-based amputee stump/socket structures for pressure monitoring in amputee socket systems, which will result in better-designed prosthetic sockets that ensure improved patient satisfaction.

Fulltext Interface pressure in transtibial socket during ascent and descent on stairs and its effect on patient satisfaction

Ali S, Abu Osman NA, Eshraghi A, Gholizadeh H, Abd Razak NA, Wan Abas WA

Clin Biomech (Bristol), 2013 Nov-Dec;28(9-10):994-9.

PMID: 24161521 DOI: 10.1016/j.clinbiomech.2013.09.004

Transtibial amputees encounter stairs and steps during their daily activities. The excessive pressure between residual limb/socket may reduce the walking capability of transtibial prosthetic users during ascent and descent on stairs. The purposes of the research were to evaluate the interface pressure between Dermo (shuttle lock) and Seal-In X5 (prosthetic valve) interface systems during stair ascent and descent, and to determine their satisfaction effects on users.

An experimental study of the interface pressure profile during level walking of a new suspension system for lower limb amputees

Eshraghi A, Abu Osman NA, Gholizadeh H, Ali S, Sævarsson SK, Wan Abas WA

Clin Biomech (Bristol), 2013 Jan;28(1):55-60.

PMID: 23157843 DOI: 10.1016/j.clinbiomech.2012.10.002

Different suspension systems that are used within prosthetic devices may alter the distribution of pressure inside the prosthetic socket in lower limb amputees. This study aimed to compare the interface pressure of a new magnetic suspension system with the pin/lock and Seal-In suspension systems.

Clinical investigation of the interface pressure in the trans-tibial socket with Dermo and Seal-In X5 liner during walking and their effect on patient satisfaction

Ali S, Osman NA, Mortaza N, Eshraghi A, Gholizadeh H, Wan Abas WA

Clin Biomech (Bristol), 2012 Nov;27(9):943-8.

PMID: 22795863 DOI: 10.1016/j.clinbiomech.2012.06.004

The interface pressure between the residual limb and prosthetic socket has a significant effect on an amputee's satisfaction and comfort. Liners provide a comfortable interface by adding a soft cushion between the residual limb and the socket. The Dermo and the Seal-In X5 liner are two new interface systems and, due to their relative infancy, very little are known about their effect on patient satisfaction. The aim of this study was to compare the interface pressure with these two liners and their effect on patient satisfaction.

Transtibial prosthetic socket pistoning: static evaluation of Seal-In(®) X5 and Dermo(®) Liner using motion analysis system

Gholizadeh H, Osman NA, Kamyab M, Eshraghi A, Abas WA, Azam MN

Clin Biomech (Bristol), 2012 Jan;27(1):34-9.

PMID: 21794965 DOI: 10.1016/j.clinbiomech.2011.07.004

The method of attachment of prosthesis to the residual limb (suspension) and socket fitting is a critical issue in the process of providing an amputee with prosthesis. Different suspension methods try to minimize the pistoning movement inside the socket. The Seal-In(®) X5 and Dermo(®) Liner by Ossur are new suspension liners that intend to reduce pistoning between the socket and liner. Since the effects of these new liners on suspension are unclear, the objective of this study was to compare the pistoning effect of Seal-In(®) X5 and Dermo(®) Liner by using Vicon Motion System.

Transtibial prosthetic suspension: less pistoning versus easy donning and doffing

Gholizadeh H, Abu Osman NA, Eshraghi A, Ali S, Sævarsson SK, Wan Abas WA, et al.

J Rehabil Res Dev, 2012;49(9):1321-30.

PMID: 23408214

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 liner-socket 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.

Displaying publications 21 - 31 of 31 in total