Abstract:
BACKGROUND:Many individuals with cerebral palsy wear ankle foot orthoses during daily life. Orthoses influence joint motion, but how they impact muscle remains unclear. In particular, the gastrocnemius is commonly stiff in cerebral palsy. Understanding whether orthoses stretch or shorten this muscle during daily life may inform orthosis design and rehabilitation. OBJECTIVES:This study investigated the impact of different ankle foot orthoses on gastrocnemius operating length during walking in children with cerebral palsy. STUDY DESIGN:Case series, within subject comparison of gastrocnemius operating length while walking barefoot and with two types of ankle foot orthoses. METHODS:We performed gait analyses for 11 children with cerebral palsy. Each child was fit with two types of orthoses: a dynamic ankle foot orthosis (Cascade dynamic ankle foot orthosis) and an adjustable dynamic response ankle foot orthosis (Ultraflex ankle foot orthosis). Musculoskeletal modeling was used to quantify gastrocnemius musculotendon operating length and velocity with each orthosis. RESULTS:Walking with ankle foot orthoses could stretch the gastrocnemius more than barefoot walking for some individuals; however, there was significant variability between participants and orthoses. At least one type of orthosis stretched the gastrocnemius during walking for 4/6 and 3/5 of the Gross Motor Functional Classification System Level I and III participants, respectively. AFOs also reduced peak gastrocnemius lengthening velocity compared to barefoot walking for some participants, with greater reductions among the Gross Motor Functional Classification System Level III participants. Changes in gastrocnemius operating length and lengthening velocity were related to changes in ankle and knee kinematics during gait. CONCLUSION:Ankle foot orthoses impact gastrocnemius operating length during walking and, with proper design, may assist with stretching tight muscles in daily life. Clinical relevance Determining whether ankle foot orthoses stretch tight muscles can inform future orthotic design and potentially provide a platform for integrating therapy into daily life. However, stretching tight muscles must be balanced with other goals of orthoses such as improving gait and preventing bone deformities.
journal_name
Prosthet Orthot Intjournal_title
Prosthetics and orthotics internationalauthors
Choi H,Wren TAL,Steele KMdoi
10.1177/0309364616665731subject
Has Abstractpub_date
2017-06-01 00:00:00pages
274-285issue
3eissn
0309-3646issn
1746-1553pii
0309364616665731journal_volume
41pub_type
杂志文章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::An anterior bending posture of the trunk during walking is often seen among the elderly commonly due to weakened thoraco-lumbar and gluteal muscles. For the management of this debilitating condition, the authors have developed a modified design of thoraco-lumbosacral orthosis (TLSO). Incorporated in this device are po...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093649509078233
更新日期:1995-04-01 00:00:00
abstract:BACKGROUND:Prosthetic gait increases demands on stability. Some variability measures can be used to investigate the stability of movement for prosthetic feet. OBJECTIVES:The purpose of this study was to determine the influence of the prosthetic foot on ground reaction force variability for transtibial amputee gait. S...
journal_title:Prosthetics and orthotics international
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doi:10.1177/0309364612439572
更新日期:2012-06-01 00:00:00
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journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1080/03093640802425459
更新日期:2009-06-01 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::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::Static footprint parameters have been used to quantify arch height with conflicting results. This could be caused by the inherent inaccuracy and variations of the methodology used. Since the foot is a dynamic structure that undergoes changes during a step, it is more desirable to capture and analyse the dynamic footpr...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1080/03093640408726701
更新日期:2004-08-01 00:00:00
abstract::The swing-phase motion of the shank of an above-knee prosthesis has been modelled mathematically. An inexpensive endoskeletal prosthesis was designed using the Jaipur foot and conduit pipes with a hinge joint for the knee. Results of field trials and the modelling indicate that a very simple above-knee prosthesis can ...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093649209164323
更新日期:1992-08-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Lower extremity amputee outcome measures assess basic mobility. The Comprehensive High-Level Activity Mobility Predictor was developed to assess high-level mobility. Validity evidence was collected in military men with traumatic lower extremity amputations. This study examines its validity in a...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
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abstract:BACKGROUND:The incidence and etiology of prosthetic services utilization is poorly understood during the first 90 days post-delivery of the initial lower limb prosthesis. This period is of critical importance, as prevailing policy dictates limits on the reimbursement for certain services provided during this time perio...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
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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::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::Patients with osteoarthritis of the hip were treated with a conservative therapy of heel lifting. Orthoses were applied on 35 hips in 33 subjects and the cases were followed for 23 months on average. Dramatic pain relief was reported, but the time required to reduce or completely relieve pain increased according to th...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.3109/03093649709164544
更新日期:1997-08-01 00:00:00
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 du...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
doi:10.1177/0309364616640945
更新日期:2017-04-01 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: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
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更新日期:2020-08-25 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:BACKGROUND:The important purpose of a powered gait orthosis is to provide active joint movement for patients with spinal cord injury. OBJECTIVES:The aim of this study was to clarify the effect of a powered gait orthosis on the kinematics and temporal-spatial parameters in paraplegics with spinal cord injury. STUDY DE...
journal_title:Prosthetics and orthotics international
pub_type: 临床试验,杂志文章
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更新日期:2013-08-01 00:00:00
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journal_title:Prosthetics and orthotics international
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更新日期:2011-06-01 00:00:00
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journal_title:Prosthetics and orthotics international
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更新日期:1999-12-01 00:00:00
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journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
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更新日期:1979-12-01 00:00:00
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journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
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更新日期:2002-08-01 00:00:00
abstract:BACKGROUND:The role of the prosthetist has changed substantially over the past century. In the transition from 'limb-maker' to 'clinician', the expectations of prosthetics professionals have also changed. OBJECTIVES:To develop and test a new scale capable of assessing and comparing current expectations of the roles of...
journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
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更新日期:2018-04-01 00:00:00
abstract::The purpose of this study was to determine the effect of varying prosthetic shank mass, while maintaining the mass centre location and moment of inertia, on the swing phase kinematics, kinetics and hip muscular effort of free speed above-knee (AK) amputee gait. Six AK amputees, wearing similar prosthetic designs, had ...
journal_title:Prosthetics and orthotics international
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更新日期:1990-12-01 00:00:00
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journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
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更新日期:2017-08-01 00:00:00
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journal_title:Prosthetics and orthotics international
pub_type: 杂志文章
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更新日期:1987-04-01 00:00:00
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pub_type: 杂志文章,评审
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