Comparative study between patellar-tendon-bearing and pressure cast prosthetic sockets

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

doi:10.1682/jrrd.2004.03.0491

Cited by 35 publications

(26 citation statements)

References 5 publications

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“…At late stance, the interface pressure at the proximal region of the anterior aspect increases, creating a more even distribution of interface pressure. This increase in proximal anterior pressure has also been shown by Goh et al [24,26]. However, the profiles observed for the sockets instrumented by Goh et al indicated a large difference in the distribution of pressure over the anterior aspect at late stance [24][25], which was not replicated in our study.…”

Section: Profile Over Anterior and Posterior Aspects Of Socketcontrasting

confidence: 61%

Untitled

Dumbleton

Buis²,

McFadyen³

et al. 2009

JRRD

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In this study, we investigated and compared the dynamic interface pressure distribution of hands-off and handson transtibial prosthetic systems by means of pressure mapping. Of the 48 established unilateral amputees recruited, half (n = 24) had been wearing pressure-cast prostheses (IceCast Compact) and the other half (n = 24) had been wearing hand-cast sockets of the patellar tendon bearing design. We measured the dynamic pressure profile of more than 90% of the area within each prosthetic socket by means of four Tekscan F-Scan socket transducer arrays. We compared the interface pressure between socket concepts. We found that the distribution of dynamic pressure at the limb-socket interface was similar for the two intervention (socket prescription) groups. However, a significant difference was found in the magnitude of the interface pressure between the two socket concepts; the interface pressures recorded in the hands-off sockets were higher than those seen in the hands-on concept. Despite the differences in interface pressure, the level of satisfaction with the sockets was similar between subject groups. The sockets instrumented for this study had been in daily use for at least 6 months, with no residual-limb health problems.

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Section: Profile Over Anterior and Posterior Aspects Of Socketcontrasting

confidence: 61%

Untitled

Dumbleton

Buis²,

McFadyen³

et al. 2009

JRRD

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“…Earlier studies [4][5] have investigated a waterbased pressure cast (PCAST) socket. Another study compared the performance of a PCAST socket with a conventional hand-cast patellar tendon bearing (PTB) socket by recording residual limb-socket interface pressures in four adults with unilateral TT amputation [7]. Although the sample size of the study was small, it found the PCAST socket fit to be as successful as the PTB socket fit.…”

Section: Introductionmentioning

confidence: 99%

Pressure casting technique for transtibial prosthetic socket fit in developing countries

Lee¹,

Lythgo²,

Laing³

et al. 2014

J Rehabil Res Dev

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Abstract-This study investigated a low-cost and low-skill dependent pressure casting technique (PCAST) to fabricate and fit transtibial (TT) prosthetic sockets in a developing country. Thirteen adult volunteers (average age 47 yr) with unilateral TT amputation participated. After fitting, five participants were lost to follow-up (four rejected the prosthesis and one died). The eight remaining participants used the prosthesis for an average of 167 +/-1 d and indicated regular use throughout this period. Success was evaluated by measures of satisfaction (Satisfaction with Prosthesis Questionnaire [SATPRO]), physical function, and gait recorded after fitting and following the usage period. SATPRO results showed high levels of satisfaction on both occasions. After the usage period, the timed upand-go and six-minute walk performances increased by 1.7 +/-2.0 s and 60 +/-29 m (p = 0.001), respectively, whereas gait speed, cadence, step and stride length, support base, and percent gait cycle times remained unchanged. The results show that a TT PCAST socket (with some minor modifications) was successfully fitted to eight of the participants (success rate of 62%). It is reasonable to conclude that this technique may assist people with TT amputation in a developing country where there is a lack of trained personnel. Importantly, this technique may reduce TT prosthetic costs and increase fitting opportunity in a developing country.

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“…Lower limb prosthesis can be composed of several components such as the socket, liner, shank, ankle, and foot. Among these components socket and liner are the important parts of the prosthesis due to its interface among the residuum and socket [1–3]. Poor socket fitting due to enhanced pressure between socket and residuum greatly reduces the activity level of prosthetic users [4, 5].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study between Dermo, Pelite, and Seal-In X5 Liners: Effect on Patient’s Satisfaction and Perceived Problems

Ali

Osman

Arifin

et al. 2014

The Scientific World Journal

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Purpose. This study aimed to compare the effect of satisfaction and perceived problems between Pelite, Dermo with shuttle lock, and Seal-In X5 liners on the transtibial amputees. Material and Methods. A total of thirty transtibial amputees (17 male, 13 female) volunteered to take part in this research. Two prostheses were fabricated for each participant. Prosthetic Evaluation Questionnaire (PEQ) was filled in by the participants with the three liners. Results. The statistics highlight that Dermo liner showed significantly higher score (P = 0.05) in walking, walking on uneven surfaces, stairs walking, fitting, donning/doffing, sitting, suspension, and overall satisfaction with Dermo liner compared with Seal-In X5 and Pelite liners. Overall satisfaction was 34% higher with Dermo liner than Seal-In X5 liner and 28% higher than Pelite liner. Participants reported less problems with Dermo liner and significant differences (P < 0.05) were recorded between the three liners in sweating, skin irritation, frustration, and pain compared with Seal-In X5 and Pelite liners. Conclusion. Participants experienced high level of satisfaction and practiced fewer problems with Dermo liner. These results showed that there is good indication to believe that Dermo liner might be a good choice for transtibial users and might help the clinicians and prosthetic practitioners in selection criteria of prosthetic liners.

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Comparative study between patellar-tendon-bearing and pressure cast prosthetic sockets

Cited by 35 publications

References 5 publications

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Untitled

Pressure casting technique for transtibial prosthetic socket fit in developing countries

Comparative Study between Dermo, Pelite, and Seal-In X5 Liners: Effect on Patient’s Satisfaction and Perceived Problems

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