Abstract:
:In able-bodied individuals, the ankle joint functions to provide shock absorption, aid in foot clearance during the swing phase, and provides a rocker mechanism during stance phase to facilitate forward progression of the body. Prosthetic ankles currently used by persons with lower limb amputations provide considerably less function than their anatomical counterparts. However, increased ankle motion in the sagittal plane may improve the gait of persons with lower limb amputations while providing a more versatile prosthesis. The primary aim of this study was to examine and quantify temporal-spatial, kinematic, and kinetic changes in the gait of four male subjects with bilateral trans-femoral amputations who walked with and without prosthetic ankle units. Two prosthesis configurations were examined: (i) Baseline with only two Seattle LightFoot2 prosthetic feet, and (ii) with the addition of Endolite Multiflex Ankle units. Data from the gait analyses were compared between prosthetic configurations and with a control group of able-bodied subjects. The amputee subjects' freely-selected walking speeds, 0.74 +/- 0.19 m/s for the Baseline condition and 0.81 +/- 0.15 m/s with the ankle units, were much less than that of the control subjects (1.35 +/- 0.10 m/s). The amputee subjects demonstrated no difference in walking speed, step length, cadence, or ankle, knee, and hip joint moments and powers between the two prosthesis configurations. Sagittal plane ankle range of motion, however, increased by 3-8 degrees with the addition of the prosthetic ankle units. Compared to the control group, following initial contact the amputee subjects passively increased the rate of energy storage or dissipation at the prosthetic ankle joint, actively increased the power generation at the hip, and increased the extension moment at the hip while wearing the prosthetic ankle configuration. The amputee subjects increased the power generation at their hips, possibly as compensation for the reduced rate of energy return at their prosthetic ankles. Results from subject questionnaires administered following the gait analyses revealed that the prosthetic ankle units provided more comfort during gait and did not increase the perceived effort to walk. The subjects also indicated that they preferred walking with the prosthetic ankle units compared to the Baseline configuration. The results of the study showed that the prosthetic ankle units improved sagittal plane ankle range of motion and increased the comfort and functionality of the amputee subjects' prostheses by restoring a significant portion of the ankle rocker mechanism during stance phase. Therefore, prosthetic ankle mechanisms should be considered a worthwhile option when prostheses are prescribed for persons with trans-femoral amputations.
journal_name
Prosthet Orthot Intjournal_title
Prosthetics and orthotics internationalauthors
McNealy LL,Gard SAdoi
10.1080/02699200701847244subject
Has Abstractpub_date
2008-03-01 00:00:00pages
111-26issue
1eissn
0309-3646issn
1746-1553pii
791361254journal_volume
32pub_type
杂志文章abstract:BACKGROUND AND AIM:DEKA Integrated Solutions Corp. (DEKA) was charged by the Defense Advanced Research Project Agency to design a prosthetic arm system that would be a dramatic improvement compared with the existing state of the art. The purpose of this article is to describe the two DEKA Arm prototypes (Gen 2 and Gen ...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364613506913
更新日期:2014-12-01 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::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::Longitudinal ulnar deficiency, whose detailed anatomy is varied, is often accompanied by other abnormalities and appears as part of several syndromes. The history of its classification is reviewed, and the treatments, which have been offered, described. Follow-up of a series shows that the function achieved is good an...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093649109164643
更新日期:1991-08-01 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:BACKGROUND:Good suspension lessens the pistoning (vertical displacement) of the residual limb inside the prosthetic socket. Several methods are used for measuring the pistoning. STUDY DESIGN:Clinical trial. OBJECTIVES:To introduce and evaluate a new simple method for measuring the pistoning between the soft liner and...
journal_title:Prosthetics and orthotics international
pub_type: 临床试验,杂志文章
doi:10.1177/0309364611423130
更新日期:2011-12-01 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:BACKGROUND:Ankle-foot orthoses are known to have a generally positive effect on gait in stroke, however the specifc type of AFO and the time point at which it is provided are highly variable in the currently available literature. OBJECTIVE:The objective was to determine the immediate spatiotemporal and kinematic effec...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364614538090
更新日期:2015-12-01 00:00:00
abstract:BACKGROUND:Until recently, no study had compared the quality of life of persons with transfemoral amputation treated with osseointegration to socket prosthesis users. OBJECTIVES:Comparison of quality of life in two types of prostheses users: a cohort of patients with osseointegration and patients equipped with a socke...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364620948649
更新日期:2020-08-25 00:00:00
abstract::Clinically applied multichannel stimulation was visualized in the very beginnings of FES. A short survey of existing multichannel systems was taken and compared to initial expectations. While much still remains to be done to get multichannel stimulation out of the research environment and into the clinical routine, th...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093647709164605
更新日期:1977-04-01 00:00:00
abstract::Terminal overgrowth in transverse deficiencies and in amputations, particularly of the humerus and tibia necessitate serial trimming procedures or re-amputation. Capping using an autogenous bone graft or a titanium and polyethylene endoprosthetic cap provides a satisfactory way of avoiding these re-amputations and all...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093649109164641
更新日期:1991-08-01 00:00:00
abstract:BACKGROUND:Little evidence exists for the orthotic management for individuals diagnosed with diabetic neuropathy and partial foot amputation. OBJECTIVE:This pilot study examined differences in balance and pressure distribution while individuals wore foot orthoses inside shoes (BA) and this same orthosis combined with ...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章,随机对照试验
doi:10.1177/0309364612437005
更新日期:2012-06-01 00:00:00
abstract::If below-knee amputation is impossible, knee disarticulation should be considered before above-knee amputation, regardless of age and etiology. Knee disarticulation which leaves the femur and patella untoched offers many advantages. The surgical technique is simple and non-traumatic since no bone or muscle tissue is t...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093647909164695
更新日期:1979-04-01 00:00:00
abstract:BACKGROUND:Increased foot temperature among individuals with type 2 diabetes can be predictive of diabetic foot ulcer development. A combination of physiological and mechanical deficiencies may contribute to elevations in intact foot temperature during gait for individuals with type 2 diabetes and transtibial amputatio...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364620968642
更新日期:2020-12-07 00:00:00
abstract:BACKGROUND:Mandibular reconstruction has been experiencing an amazing evolution. Several different approaches are used to reconstruct this bone and therefore have a fundamental role in the recovery of oral functions. OBJECTIVES:This review aims to highlight the persistent problems associated with the approaches identi...
journal_title:Prosthetics and orthotics international
pub_type: 历史文章,杂志文章,评审
doi:10.1177/0309364613520032
更新日期:2015-06-01 00:00:00
abstract::In a prospective study of polypropylene (PP) prostheses for trans-tibial amputees four different modified SACH feet were used. These are identified as: 1. BAVI from the national manufacturer of componentry in BaVi; 2. HCMC a design initiated by the International Committee of the Red Cross (ICRC) together with the Army...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093649909071641
更新日期:1999-12-01 00:00:00
abstract:BACKGROUND:Polycentric knees for transfemoral prostheses have a variety of geometries, but a survey of literature shows that there are few ways of comparing their performance. OBJECTIVES:Our objective was to present a method for performance comparison of polycentric knee geometries and design a new geometry. STUDY DE...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364616652017
更新日期:2017-08-01 00:00:00
abstract::This paper discusses the place of rotational moulding in the provision of prosthetic shanks and shank sections. It covers the selection of thermoplastic material, the moulding conditions and their automation in a machine process, and the development of a suitable range of moulds. Also covered is the question of interf...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093648509164822
更新日期:1985-04-01 00:00:00
abstract::The activity achieved by a lower limb amputee is usually assessed by clinical judgement or physiological tests. The former is seldom absolute, being affected by factors such as patient age, and is expressed in categories which may not be equivalent to those used by other observers. Physiological testing provides a mea...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093648109146225
更新日期:1981-04-01 00:00:00
abstract::We present a case report of a patient, affected by post-polio syndrome and cuff tear arthropathy of his right shoulder, who underwent reverse shoulder arthroplasty. A previous radial deficiency was unmasked in the post-operative follow-up, with passive elbow bending when the forearm was put in an antigravitational pos...
journal_title:Prosthetics and orthotics international
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更新日期:2009-06-01 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
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更新日期:1998-08-01 00:00:00
abstract:BACKGROUND:High-quality clinical practice guidelines are necessary for effective use of resources both at an individual patient- and national-level. Nordic clinical practice guidelines recommendations for orthotic treatment of knee osteoarthritis vary and little is known about their quality. OBJECTIVES:The aim of the ...
journal_title:Prosthetics and orthotics international
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doi:10.1177/0309364619857854
更新日期:2019-10-01 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:BACKGROUND:Conservative pedorthic management of the diabetic foot has been shown to be an effective method to prevent ulcers, amputations, and re-amputations. This article exhibits why and how pedorthics plays such an important role via modalities such as footwear, shoe modifications, custom foot orthoses, and partial ...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章,评审
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更新日期:2015-02-01 00:00:00
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journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093649409164671
更新日期:1994-04-01 00:00:00
abstract::The concept of measuring pressure at the interface between the stump and the prosthetic socket could provide valuable information in the process of prosthetic socket fabrication, modification, and fit. Two systems, the Rincoe Socket Fitting System (SFS) and Tekscan's F-Socket Pressure Measurement System, have been com...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1080/03093640008726523
更新日期:2000-04-01 00:00:00
abstract:BACKGROUND AND AIM:In recent years, there has been an increased interest in recording high-quality electromyographic signals from within the sockets of lower-limb amputees. However, successful recording presents major challenges to both researchers and clinicians. This article details and compares four prototypical int...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364613516484
更新日期:2015-04-01 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
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更新日期:1998-12-01 00:00:00
abstract:BACKGROUND::Orthotic treatment for adolescent idiopathic scoliosis is a mainstay in nonoperative treatment to prevent progressive spinal deformity. OBJECTIVE::To determine the effectiveness of the Providence orthosis in the treatment of adolescent idiopathic scoliosis. STUDY DESIGN::Retrospective review. METHODS::Pa...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
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更新日期:2019-04-01 00:00:00
abstract::This paper explores the use of biofeedback to improve gait in Parkinson's disease (PD) and, in particular, reports on the design and testing of a new vibratory orthosis. The orthosis causes a rhythmic vibratory stimulus to be applied to one or other side of the lumbar region. The stimulus is synchronized with stepping...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1080/03093640802647094
更新日期:2009-03-01 00:00:00