| Can we predict outcome of surgical reconstruction of Charcot neuroarthropathy by dynamic plantar pressure assessment?--A proof of concept study. | |
| | |
MedLine Citation:
|
PMID: 19836956 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The joint deformity that arises as a result of Charcot neuroarthropathy, leads to gait modification. Ulceration risk associated with the deformity is generally assessed by measuring plantar pressure magnitude (PPM). However, as PPM is partially dependent on gait speed and treatment interventions may impact speed, the use of PPM to validate treatment is not ideal. This study suggests a novel assessment protocol, which is speed independent and can objectively (1) characterize abnormality in dynamic plantar loading in patients with foot Charcot neuroarthropathy and (2) screen improvement in dynamic plantar loading after foot reconstruction surgery. To examine whether the plantar pressure distribution (PPD) measured using EMED platform, was normal, a customized normal distribution curve was created for each trial. Then the original PPD was fitted to the customized normal distribution curve. This technique yields a regression factor (RF), which represents the similarity of the actual pressure distribution with a normal distribution. RF values may range from negative 1 to positive 1 and as the value increases positively so does the similarity between the actual and normalized pressure distributions. We tested this novel score on the plantar pressure pattern of healthy subjects (N=15), Charcot patients pre-operation (N=4) and a Charcot patient post-foot reconstruction (N=1). In healthy subjects, the RF was 0.46+/-0.1. When subjects increased their gait speed by 29%, PPM was increased by 8% (p<10(-5)), while RF was not changed (p=0.55), suggesting that RF value is independent of gait speed. In preoperative Charcot patients, the RF<0, however, RF increased post-surgery (RF=0.42), indicating a transition to normal plantar distribution after Charcot reconstruction. |
| | |
Authors:
|
Bijan Najafi; Ryan T Crews; David G Armstrong; Lee C Rogers; Kamiar Aminian; James Wrobel |
Related Documents
:
|
7976496 - Periosteal bone formation stimulated by externally induced bending strains. 15201616 - Biomechanical interaction between cap thickness, lipid core composition and blood press... 8259906 - Sensate and insensate in-shoe plantar pressures. 18670326 - Validation of a novel minimally invasive intervertebral disc pressure sensor utilizing ... 8201056 - Reverse pressure gradients across the teat canal related to machine milking. 3985726 - Postural influences on the hemodynamic responses to vasodilating drugs in congestive he... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Gait & posture Volume: 31 ISSN: 1879-2219 ISO Abbreviation: Gait Posture Publication Date: 2010 Jan |
Date Detail:
|
Created Date: 2010-02-03 Completed Date: 2010-05-18 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9416830 Medline TA: Gait Posture Country: England |
Other Details:
|
Languages: eng Pagination: 87-92 Citation Subset: IM |
Copyright Information:
|
Copyright 2009 Elsevier B.V. All rights reserved. |
Affiliation:
|
Scholl's Center for Lower Extremity Ambulatory Research, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA. bijan.najafi@rosalindfranklin.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Analysis of Variance Arthropathy, Neurogenic / surgery* Biomechanics Female Foot Deformities / surgery* Gait / physiology Humans Male Monitoring, Physiologic / methods Predictive Value of Tests Pressure Statistics, Nonparametric Treatment Outcome Walking / physiology* Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Imaging endocytic clathrin structures in living cells.
Next Document: Effect of hyperbaric oxygen therapy on the duration of treatment of spinal tuberculosis.