Abstract:
BACKGROUND:Reduced-stiffness components are often prescribed in lower-limb prostheses, but their efficacy in augmenting shock absorption has been inconclusive. OBJECTIVES:To perform a systematic variation of longitudinal prosthetic stiffness over a wide range of values and to evaluate its effect on shock absorption during gait. STUDY DESIGN:Repeated-measures crossover experiment. METHODS:Twelve subjects with a unilateral transtibial amputation walked at normal and fast self-selected speeds. Longitudinal prosthetic stiffness was modified by springs within a shock-absorbing pylon: normal (manufacturer recommended), 75% of normal (medium), 50% of normal (soft), and rigid (displacement blocked). The variables of interest were kinematic (stance-phase knee flexion and pelvic obliquity) and kinetic (prosthetic-side ground reaction force loading peak magnitude and timing). RESULTS:No changes were observed in kinematic measures during gait. A significant difference in peak ground reaction force magnitudes between medium and normal ( p = 0.001) during freely selected walking was attributed to modified walking speed ( p = 0.008). Ground reaction force peaks were found to be statistically different during fast walking, but only between isolated stiffness conditions. Thus, altering longitudinal prosthesis stiffness produced no appreciable change in gait biomechanics. CONCLUSION:Prosthesis stiffness does not appear to substantially influence shock absorption in transtibial prosthesis users. Clinical relevance Varying the level of longitudinal prosthesis stiffness did not meaningfully influence gait biomechanics at self-selected walking speeds. Thus, as currently prescribed within a transtibial prosthesis, adding longitudinal stiffness in isolation may not provide the anticipated shock absorption benefits. Further research into residual limb properties and compensatory mechanisms is needed.
journal_name
Prosthet Orthot Intjournal_title
Prosthetics and orthotics internationalauthors
Boutwell E,Stine R,Gard Sdoi
10.1177/0309364616640945subject
Has Abstractpub_date
2017-04-01 00:00:00pages
178-185issue
2eissn
0309-3646issn
1746-1553pii
0309364616640945journal_volume
41pub_type
杂志文章abstract::This study served as a pilot to develop the methodology for a larger number of clinical trials. Ten trans-tibial amputees compared sockets made by conventional methods with sockets made using computer aided socket design (CASD). Prosthetists, paired for experience, fitted each subject with one prosthesis using each me...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093648609164519
更新日期:1986-12-01 00:00:00
abstract::Fifty-nine amputees, 24 below-knee (BK), 17 through-knee (TK) and 18 above-knee (AK) who had prosthetic replacements, were evaluated using a questionnaire which provided a quantitative and qualitative assessment scale for the prosthetic function. The ability to apply or don the prosthesis was noted in 100% of the BK, ...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093649209164336
更新日期:1992-12-01 00:00:00
abstract::Myoelectric prostheses are generally not provided in the United Kingdom for children before the age of 3 1/2 years. Following the introduction of a smaller sized electric hand in the United Kingdom in 1993 the authors decided to introduce electrically powered hands for a group of congenital upper limb deficient childr...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093649809164477
更新日期:1998-08-01 00:00:00
abstract::Foot complications in diabetes can be decreased by preventive measures. The authors evaluated the current diabetic foot screening and prevention programme of the diabetes outpatient clinic of their university hospital, by assessing the presence of risk factors for the development of foot disorders and the preventive m...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1080/03093640108726586
更新日期:2001-08-01 00:00:00
abstract:BACKGROUND:Based on the literature, patients with carpal tunnel syndrome are suggested to wear a custom-made wrist orthosis immobilizing the wrist in a neutral position. Many prefabricated orthoses are available on the market, but the majority of those do not assure neutral wrist position. OBJECTIVES:We hypothesized t...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364613490440
更新日期:2014-06-01 00:00:00
abstract:BACKGROUND:Flexor tendon repair in the hand remains challenging in avoiding tendon rupture and adhesion formation. Post-operative mobilization has been shown to be critical in regaining functional range of motion. OBJECTIVES:The objective of this study is 2-fold: to assess the influence of wrist position on maximum gr...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364615605395
更新日期:2017-02-01 00:00:00
abstract::In Europe, bespoke orthopaedic shoes are usually sent for a trial fitting in order to check the fit and indicate any modifications required before final finishing. The use of shell shoes at the fit assessment stage, rather than the traditional alternative of partially or fully finished shoes, can offer service advanta...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093649509168002
更新日期:1995-12-01 00:00:00
abstract::This contribution presents the case histories of two patients who underwent limb amputation. One patient suffered from psoriasis prior to the surgery and the second developed psoriatic lesions post surgery. Both patients were provided with a prosthesis and despite the multiple cutaneous complications of the psoriasis ...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093640309167979
更新日期:2003-04-01 00:00:00
abstract::Orthoses which fit inside shoes have, in many cases in the past, been fashioned to the shape of the patient's foot. It is suggested that improved stability and comfort is achieved if, instead, the outside shape of the foot-piece of the orthosis is fashioned to the inside shape of the footwear. A method for achieving t...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093647909103088
更新日期:1979-08-01 00:00:00
abstract:BACKGROUND:Custom-contoured wheelchair seating lowers risk of pressure injury and postural deterioration while custom-contoured wheelchair seating lowers risk of pressure injury and postural deterioration while increasing the stability and functional activity of the wheelchair occupant. Producing custom-contoured seati...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章,评审
doi:10.1177/0309364619836028
更新日期:2019-08-01 00:00:00
abstract:BACKGROUND:Prosthetic alignment is usually unchanged once optimized. However, a previous study indicated that long-distance walking significantly altered gait patterns, suggesting some alignment adjustments after walking are required. This study investigated the effects of alignment changes (by inserting a heel lift) o...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364612461521
更新日期:2013-08-01 00:00:00
abstract::Ten years after the ISPO consensus conference on amputation surgery, a search of relevant publications in the Rehabilitation-prosthetics-literature over the years 1990-2000 was performed. The main key-words in this research were: "lower limb, amputation, human and rehabilitation". One hundred and four (104) articles w...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章,评审
doi:10.1080/03093640108726563
更新日期:2001-04-01 00:00:00
abstract:BACKGROUND:The aim of this case study was to identify the effect of a powered hip orthosis on the kinematics and temporal-spatial parameters of walking by a patient with spinal cord injury (SCI). CASE DESCRIPTION AND METHODS:Two orthoses were evaluated while worn by an incomplete SCI subject with a T-8level of injury....
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364611431482
更新日期:2012-03-01 00:00:00
abstract::Since 1972 the Hyogo Rehabilitation Centre has been developing a variable-resistance-type pneumatic control device, the HRC Adjustable Pneumatic Swing-Phase Control Knee. Successful field tests have been carried out on 20 cases with Model IV since 1973 with only a limited number of mechanical troubles. This paper intr...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093647809166698
更新日期:1978-12-01 00:00:00
abstract::In a prospective, controlled study, 186 prosthetic rubber feet of different designs were fitted to amputees with trans-tibial prostheses. There were 158 amputees available for follow-up. The amputee compliance was good and 89% were satisfied with their device. After 18 months of use one VI-Solid rubber foot from VVAF ...
journal_title:Prosthetics and orthotics international
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1080/03093640600794692
更新日期:2006-08-01 00:00:00
abstract:BACKGROUND:The advanced reciprocating gait orthosis (ARGO) has a rigid structure which provides restricted movement at the hip, knee, and ankle joints and incorporates a pelvic section with an extended section in the lumbar region. Healthy subjects, when walking with an RGO in situ, could feasibly demonstrate the level...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364615592699
更新日期:2016-04-01 00:00:00
abstract::A simple alignment apparatus and the method of transferring the offset test load to the prosthetic assembly through an aligned mandrel for the principal structural tests in accordance with ISO 10328 is presented. The new alignment apparatus was used to prepare test specimens consisting of traditional laminated prosthe...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1080/03093640008726554
更新日期:2000-12-01 00:00:00
abstract:BACKGROUND:Children with cerebral palsy (CP) often demonstrate postural control difficulties. Orthotic management may assist in improving postural control in these children. OBJECTIVE:The purpose of this investigation was to examine the influence of floor reaction ankle foot orthosis (FRAFO) on postural flexion called...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364611429855
更新日期:2012-03-01 00:00:00
abstract::This paper describes a new casting system for transtibial socket fabrication. Like the earlier CIR Sand Casting System, the CIR Casting System is based on the 'dilatancy' principle that is similar to the packaging process for coffee beans by which loose beans become a solid mass when a vacuum is applied. The main diff...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1080/03093640802446703
更新日期:2009-03-01 00:00:00
abstract::A Reference Library of socket shapes for an Above-Knee Computer Aided Socket Design (CASD) System has been created. This library forms part of a more general CASD System (Dean & Saunders, 1985; Novicov & Foort, 1982). It consists of a matrix of reference shapes representing above-knee socket characteristics and is bas...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093648909079421
更新日期:1989-12-01 00:00:00
abstract::Initial analyses from a survey of people with unilateral upper limb congenital absence registered with the Cambridge Disablement Services Centre (DSC) indicated differences related to laterality and gender. A postal survey of all DSCs in the UK was conducted and support for these findings was provided from the analysi...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093649809164487
更新日期:1998-12-01 00:00:00
abstract:BACKGROUND:Contact dermatitis is a frequent inflammatory skin disease. A suspected diagnosis is based on clinical symptoms, a plausible contact to allergens and a suitable history of dermatitis. Therefore, careful diagnosis by patch testing is of great importance because the patch testing is important to find out which...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364614534293
更新日期:2015-10-01 00:00:00
abstract:BACKGROUND:Individuals with transtibial amputation are at increase risk of falling. The absence of an ankle joint and the associated musculature in these individuals can reduce clearance between the prosthetic foot and ground during the swing phase of gait, which may increase the risk of stumbling and in turn falling. ...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364616650085
更新日期:2017-08-01 00:00:00
abstract::The effects of introducing the Team Approach to the management of the lower limb amputee has been assessed in a consecutive series of 233 patients over a five year period. During the first year, baseline data was collected and during the subsequent yearly phases the effects of introducing a physiotherapist co-ordinato...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093648709079376
更新日期:1987-04-01 00:00:00
abstract::The need to measure and evaluate orthotics and prosthetics (O&P) practice has received growing recognition in the past several years. Reliable and valid self-report instruments are needed that can help facilities evaluate patient outcomes. The objective of this project was to develop a set of self-report instruments t...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1080/03093640308726682
更新日期:2003-12-01 00:00:00
abstract::Interface pressures and shear stresses at different sagittal plane angular alignment settings were measured on 3 trans-tibial amputee subjects ambulating with patellar-tendon-bearing total contact prostheses. Substantial socket-shank angular alignment modifications in the sagittal plane had minimal effect on stance ph...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093649909071607
更新日期:1999-04-01 00:00:00
abstract:BACKGROUND:Balance is an important variable to consider during the rehabilitation process of individuals with trans-tibial amputation. Limited evidence exists on the balance abilities of people with trans-tibial amputation due to vascular causes. OBJECTIVE:The purpose of this article is to review literature and determ...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章,评审
doi:10.1177/0309364616683819
更新日期:2017-08-01 00:00:00
abstract:BACKGROUND:In 2003, the British Society of Rehabilitation Medicine (BSRM) published guidelines on amputee and prosthetic rehabilitation, including those with congenital limb deficiency. OBJECTIVES:The aim of the study was to evaluate the service provided by the Regional Disablement Service (RDS) to children with conge...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364611427070
更新日期:2012-03-01 00:00:00
abstract:BACKGROUND AND AIM:Microtia is one of the forms of ear loss and deformity. A prosthesis that is simple to apply, and which has adequate suspension and acceptable aesthetics, can be useful in the rehabilitation of patients with this deficit and can improve the social and psychological effects of patients with ear amputa...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364612467344
更新日期:2013-08-01 00:00:00
abstract:BACKGROUND AND AIM:It is difficult to measure foam model shapes using contact digitizers because the stylus contact tends to get stuck in the soft foam. The aim of this paper is to describe a technique to overcome this challenge and to assess its effect on digitizer error. TECHNIQUE:A controlled laboratory study was c...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364610394478
更新日期:2011-06-01 00:00:00