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Tracy JB, Gaffney BMM, Thomsen PB, Awad ME, Melton DH, Christiansen CL, Stoneback JW. Dynamic gait stability and stability symmetry for people with transfemoral amputation: A case-series of 19 individuals with bone-anchored limbs. J Biomech 2024; 171:112208. [PMID: 38941842 DOI: 10.1016/j.jbiomech.2024.112208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 06/20/2024] [Accepted: 06/24/2024] [Indexed: 06/30/2024]
Abstract
For some individuals with severe socket-related problems, prosthesis osseointegration directly connects a prosthesis to the residual limb creating a bone-anchored limb (BAL). We compared dynamic gait stability and between-limb stability symmetry, as measured by the Margin of Stability (MoS) and the Normalized Symmetry Index (NSI), for people with unilateral transfemoral amputation before and one-year after BAL implantation. The MoS provides a mechanical construct to assess dynamic gait stability and infer center of mass and limb control by relating the center of mass and velocity to the base of support. Before and one-year after BAL implantation, 19 participants walked overground at self-selected speeds. We quantified dynamic gait stability anteriorly and laterally at foot strike and at the minimum lateral MoS value. After implantation, we observed decreased lateral MoS at foot strike for the amputated (MoS mean(SD) %height; pre: 6.6(2.3), post: 5.9(1.3), d = 0.45) and intact limb (pre: 6.2(1.2), post: 5.8(1.0), d = 0.38) and increased between-limb MoS symmetry at foot strike (NSI mean(SD) %; anterior-pre: 10.3(7.3), post: 8.4(3.6), d = 0.23; lateral-pre: 18.8(12.4), post: 12.4(4.9), d = 0.47) and at minimum lateral stability (pre: 28.1(18.1), post: 19.2(6.8), d = 0.50). Center of mass control using a BAL resulted in dynamic gait stability more similar between limbs and may have reduced the adoption of functional asymmetries. We suggest that improved between-limb MoS symmetry after BAL implantation is likely due to subtle changes in individual limb MoS values at self-selected walking speeds resulting in an overall positive impact on fall risk through improved center of mass and prosthetic limb control.
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Affiliation(s)
- James B Tracy
- Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; Veteran's Affairs Eastern Colorado Healthcare System, Aurora, CO, USA.
| | - Brecca M M Gaffney
- Veteran's Affairs Eastern Colorado Healthcare System, Aurora, CO, USA; Department of Mechanical Engineering, University of Colorado Denver, Denver, CO, USA; Center for Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Peter B Thomsen
- Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; Veteran's Affairs Eastern Colorado Healthcare System, Aurora, CO, USA
| | - Mohamed E Awad
- Department of Orthopedics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Danielle H Melton
- Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; Department of Orthopedics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Cory L Christiansen
- Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; Veteran's Affairs Eastern Colorado Healthcare System, Aurora, CO, USA
| | - Jason W Stoneback
- Department of Orthopedics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
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Mazzarini A, Fagioli I, Eken H, Livolsi C, Ciapetti T, Maselli A, Piazzini M, Macchi C, Davalli A, Gruppioni E, Trigili E, Crea S, Vitiello N. Improving Walking Energy Efficiency in Transtibial Amputees Through the Integration of a Low-Power Actuator in an ESAR Foot. IEEE Trans Neural Syst Rehabil Eng 2024; 32:1397-1406. [PMID: 38507380 DOI: 10.1109/tnsre.2024.3379904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Reducing energy consumption during walking is a critical goal for transtibial amputees. The study presents the evaluation of a semi-active prosthesis with five transtibial amputees. The prosthesis has a low-power actuator integrated in parallel into an energy-storing-and-releasing foot. The actuator is controlled to compress the foot during the stance phase, supplementing the natural compression due to the user's dynamic interaction with the ground, particularly during the ankle dorsiflexion phase, and to release the energy stored in the foot during the push-off phase, to enhance propulsion. The control strategy is adaptive to the user's gait patterns and speed. The clinical protocol to evaluate the system included treadmill and overground walking tasks. The results showed that walking with the semi-active prosthesis reduced the Physiological Cost Index of transtibial amputees by up to 16% compared to walking using the subjects' proprietary prosthesis. No significant alterations were observed in the spatiotemporal gait parameters of the participants, indicating the module's compatibility with users' natural walking patterns. These findings highlight the potential of the mechatronic actuator in effectively reducing energy expenditure during walking for transtibial amputees. The proposed prosthesis may bring a positive impact on the quality of life, mobility, and functional performance of individuals with transtibial amputation.
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Johansson R, Jensen L, Barnett CT, Rusaw DF. Quantitative methods used to evaluate balance, postural control, and the fear of falling in lower limb prosthesis users: A systematic review. Prosthet Orthot Int 2023; 47:586-598. [PMID: 37318276 DOI: 10.1097/pxr.0000000000000250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 04/23/2023] [Indexed: 06/16/2023]
Abstract
Problems with balance, postural control, and fear of falling are highly prevalent in lower limb prosthesis users, with much research conducted to understand these issues. The variety of tools used to assess these concepts presents a challenge when interpreting research outcomes. This systematic review aimed to provide a synthesis of quantifiable methods used in the evaluation of balance, postural control, and fear of falling in lower limb prosthesis users with an amputation level at or proximal to the ankle joint. A systematic search was conducted in CINAHL, Medline, AMED, Cochrane, AgeLine, Scopus, Web of Science, Proquest, PsycINFO, PsycArticles, and PubPsych databases followed by additional manual searching via reference lists in the reviewed articles databases. Included articles used quantitative measure of balance or postural control as one of the dependent variables, lower limb prosthesis users as a sample group, and were published in a peer-reviewed journal in English. Relevant assessment questions were created by the investigators to rate the assessment methods used in the individual studies. Descriptive and summary statistics are used to synthesize the results. The search yielded (n = 187) articles assessing balance or postural control (n = 5487 persons in total) and (n = 66) articles assessing fear of falling or balance confidence (n = 7325 persons in total). The most used test to measure balance was the Berg Balance Scale and the most used test to measure fear of falling was the Activities-specific Balance Confidence scale. A large number of studies did not present if the chosen methods were valid and reliable for the lower limb prosthesis users. Among study limitations, small sample size was common.
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Affiliation(s)
- Robin Johansson
- School of Health and Welfare, Jönköping University, Jönköping, Sweden
| | - Louise Jensen
- School of Health and Welfare, Jönköping University, Jönköping, Sweden
- Southern Älvsborg Hospital, Borås, Sweden
| | - Cleveland T Barnett
- School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom
| | - David F Rusaw
- School of Health and Welfare, Jönköping University, Jönköping, Sweden
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Gupta R, Grove K, Wei A, Lee J, Akkouch A. Ankle and Foot Arthroplasty and Prosthesis: A Review on the Current and Upcoming State of Designs and Manufacturing. MICROMACHINES 2023; 14:2081. [PMID: 38004938 PMCID: PMC10673427 DOI: 10.3390/mi14112081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/31/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023]
Abstract
The foot and ankle serve vital roles in weight bearing, balance, and flexibility but are susceptible to many diverse ailments, making treatment difficult. More commonly, Total Ankle Arthroplasty (TAA) and Total Talus Replacement (TTR) are used for patients with ankle degeneration and avascular necrosis of the talus, respectively. Ankle prosthesis and orthosis are also indicated for use with lower limb extremity amputations or locomotor disability, leading to the development of powered exoskeletons. However, patient outcomes remain suboptimal, commonly due to the misfitting of implants to the patient-specific anatomy. Additive manufacturing (AM) is being used to create customized, patient-specific implants and porous implant cages that provide structural support while allowing for increased bony ingrowth and to develop customized, lightweight exoskeletons with multifunctional actuators. AM implants and devices have shown success in preserving stability and mobility of the joint and achieving fast recovery, as well as significant improvements in gait rehabilitation, gait assistance, and strength for patients. This review of the literature highlights various devices and technologies currently used for foot and ankle prosthesis and orthosis with deep insight into improvements from historical technologies, manufacturing methods, and future developments in the biomedical space.
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Affiliation(s)
- Richa Gupta
- Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI 49008, USA; (R.G.); (K.G.); (A.W.); (J.L.)
| | - Kyra Grove
- Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI 49008, USA; (R.G.); (K.G.); (A.W.); (J.L.)
| | - Alice Wei
- Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI 49008, USA; (R.G.); (K.G.); (A.W.); (J.L.)
| | - Jennifer Lee
- Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI 49008, USA; (R.G.); (K.G.); (A.W.); (J.L.)
| | - Adil Akkouch
- Department of Orthopaedic Surgery and Medical Engineering Program, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI 49008, USA
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Shi QQ, Yick KL, Wu J, Huang X, Tse CY, Chan MK. A Scientometric Analysis and Visualization of Prosthetic Foot Research Work: 2000 to 2022. Bioengineering (Basel) 2023; 10:1138. [PMID: 37892868 PMCID: PMC10604169 DOI: 10.3390/bioengineering10101138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/24/2023] [Accepted: 09/27/2023] [Indexed: 10/29/2023] Open
Abstract
This study aims to highlight recent research work on topics around prosthetic feet through a scientometric analysis and historical review. The most cited publications from the Clarivate Analytics Web of Science Core Collection database were identified and analyzed from 1 January 2000 to 31 October 2022. Original articles, reviews with full manuscripts, conference proceedings, early access documents, and meeting abstracts were included. A scientometric visualization analysis of the bibliometric information related to the publications, including the countries, institutions, journals, references, and keywords, was conducted. A total of 1827 publications met the search criteria in this study. The related publications grouped by year show an overall trend of increase during the two decades from 2000 to 2022. The United States is ranked first in terms of overall influence in this field (n = 774). The Northwestern University has published the most papers on prosthetic feet (n = 84). Prosthetics and Orthotics International has published the largest number of studies on prosthetic feet (n = 151). During recent years, a number of studies with citation bursts and burst keywords (e.g., diabetes, gait, pain, and sensor) have provided clues on the hotspots of prosthetic feet and prosthetic foot trends. The findings of this study are based on a comprehensive analysis of the literature and highlight the research topics on prosthetic feet that have been primarily explored. The data provide guidance to clinicians and researchers to further studies in this field.
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Affiliation(s)
- Qiu-Qiong Shi
- Laboratory for Artificial Intelligence in Design, Hong Kong, China;
| | - Kit-Lun Yick
- Laboratory for Artificial Intelligence in Design, Hong Kong, China;
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hong Kong, China;
| | - Jinlong Wu
- College of Physical Education, Southwest University, Chongqing 400715, China;
| | - Xujia Huang
- School of Recreational Sports and Tourism, Beijing Sport University, Beijing 100084, China;
| | - Chi-Yung Tse
- Centre for Orthopaedic Surgery, Hong Kong, China;
| | - Mei-Ki Chan
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hong Kong, China;
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Lathouwers E, Díaz MA, Maricot A, Tassignon B, Cherelle C, Cherelle P, Meeusen R, De Pauw K. Therapeutic benefits of lower limb prostheses: a systematic review. J Neuroeng Rehabil 2023; 20:4. [PMID: 36639655 PMCID: PMC9840272 DOI: 10.1186/s12984-023-01128-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 01/07/2023] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Enhancing the quality of life of people with a lower limb amputation is critical in prosthetic development and rehabilitation. Yet, no overview is available concerning the impact of passive, quasi-passive and active ankle-foot prostheses on quality of life. OBJECTIVE To systematically review the therapeutic benefits of performing daily activities with passive, quasi-passive and active ankle-foot prostheses in people with a lower limb amputation. METHODS We searched the Pubmed, Web of Science, Scopus and Pedro databases, and backward citations until November 3, 2021. Only English-written randomised controlled trials, cross-sectional, cross-over and cohort studies were included when the population comprised individuals with a unilateral transfemoral or transtibial amputation, wearing passive, quasi-passive or active ankle-foot prostheses. The intervention and outcome measures had to include any aspect of quality of life assessed while performing daily activities. We synthesised the participants' characteristics, type of prosthesis, intervention, outcome and main results, and conducted risk of bias assessment using the Cochrane risk of bias tool. This study is registered on PROSPERO, number CRD42021290189. RESULTS We identified 4281 records and included 34 studies in total. Results indicate that quasi-passive and active prostheses are favoured over passive prostheses based on biomechanical, physiological, performance and subjective measures in the short-term. All studies had a moderate or high risk of bias. CONCLUSION Compared to passive ankle-foot prostheses, quasi-passive and active prostheses significantly enhance the quality of life. Future research should investigate the long-term therapeutic benefits of prosthetics devices.
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Affiliation(s)
- Elke Lathouwers
- grid.8767.e0000 0001 2290 8069Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, 1050 Brussels, Belgium ,grid.8767.e0000 0001 2290 8069Brussels Human Robotics Research Center (BruBotics), Vrije Universiteit Brussel, 1050 Brussels, Belgium
| | - María Alejandra Díaz
- grid.8767.e0000 0001 2290 8069Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, 1050 Brussels, Belgium ,grid.8767.e0000 0001 2290 8069Brussels Human Robotics Research Center (BruBotics), Vrije Universiteit Brussel, 1050 Brussels, Belgium
| | - Alexandre Maricot
- grid.8767.e0000 0001 2290 8069Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, 1050 Brussels, Belgium
| | - Bruno Tassignon
- grid.8767.e0000 0001 2290 8069Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, 1050 Brussels, Belgium
| | | | | | - Romain Meeusen
- grid.8767.e0000 0001 2290 8069Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, 1050 Brussels, Belgium ,grid.8767.e0000 0001 2290 8069Brussels Human Robotics Research Center (BruBotics), Vrije Universiteit Brussel, 1050 Brussels, Belgium
| | - Kevin De Pauw
- Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, 1050, Brussels, Belgium. .,Brussels Human Robotics Research Center (BruBotics), Vrije Universiteit Brussel, 1050, Brussels, Belgium.
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7
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Finco MG, Moudy SC, Patterson RM. Normalized kinematic walking symmetry data for individuals who use lower-limb prostheses: considerations for clinical practice and future research. JOURNAL OF PROSTHETICS AND ORTHOTICS : JPO 2023; 35:e1-e17. [PMID: 37008386 PMCID: PMC10062529 DOI: 10.1097/jpo.0000000000000435] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
ABSTRACT
Introduction
Individuals who use unilateral transtibial or transfemoral prostheses have negative secondary health effects associated with decreased kinematic (e.g., spatiotemporal and joint angle) walking symmetry between prosthetic and intact limbs. Research studies have quantified kinematic walking symmetry, but studies can be difficult to compare owing to the inclusion of small sample sizes and differences in participant demographics, biomechanical parameters, and mathematical analysis of symmetry. This review aims to normalize kinematic walking symmetry research data across studies by level of limb loss and prosthetic factors to inform considerations in clinical practice and future research.
Methods
A search was performed on March 18, 2020, in PubMed, Scopus, and Google Scholar to encompass kinematic walking symmetry literature from the year 2000. First, the most common participant demographics, kinematic parameters, and mathematical analysis of symmetry were identified across studies. Then, the most common mathematical analysis of symmetry was used to recalculate symmetry data across studies for the five most common kinematic parameters.
Results
Forty-four studies were included in this review. The most common participant demographics were younger adults with traumatic etiology who used componentry intended for higher activity levels. The most common kinematic parameters were step length, stance time, and sagittal plane ankle, knee, and hip range of motion. The most common mathematical analysis was a particular symmetry index equation.
Conclusions
Normalization of data showed that symmetry tended to decrease as level of limb loss became more proximal and to increase with prosthetic componentry intended for higher activity levels. However, most studies included 10 or fewer individuals who were active younger adults with traumatic etiologies.
Clinical Relevance
Data summarized in this review could be used as reference values for rehabilitation and payer justification. Specifically, these data can help guide expectations for magnitudes of walking symmetry throughout rehabilitation or to justify advanced prosthetic componentry for active younger adults under 65 years of age with traumatic etiologies to payers.
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Affiliation(s)
- M G Finco
- University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX, 76107, USA
| | - Sarah C Moudy
- University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX, 76107, USA
| | - Rita M Patterson
- University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX, 76107, USA
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Wong CK, Vandervort EE, Moran KM, Adler CM, Chihuri ST, Youdan GA. Walking asymmetry and its relation to patient-reported and performance-based outcome measures in individuals with unilateral lower limb loss. Int Biomech 2022; 9:33-41. [PMID: 36414237 PMCID: PMC9704090 DOI: 10.1080/23335432.2022.2142160] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Gait asymmetry persists for most people after lower limb amputation and is associated with slower walking speeds. However, the relationship between gait asymmetry and patient-reported function remains unclear because they are not commonly assessed together. The purpose of this study was to determine relationships between gait asymmetries in people with lower limb loss and (1) patient-reported outcomes and (2) performance-based prosthetic functional measures. This cross-sectional analysis included nine people with unilateral limb loss aged 48.2 ± 13.1 years of mixed amputation etiology. Patient-reported outcomes included the Prosthetic Evaluation Questionnaire mobility subscale and Activities-specific Balance Confidence scale. Performance outcomes included the Berg Balance Scale and the 30-second sit-to-stand test. Walking performance measures included the 2-Minute Walk Test, during which APDM Opal sensors recorded spatiotemporal gait parameters, and daily step-counts from StepWatch4 activity monitors. The study found that the most asymmetric gait symmetry ratios (prosthetic-limb divided by intact-limb) could be attributed to prosthetic foot dorsiflexion-plantarflexion and rotation motion limitations: prosthetic-limb trailing double support (0.789 ± 0.052), toe-off (0.760 ± 0.068) and toe-out angle (0.653 ± 0.256). Single limb stance, and stance and swing phase durations were most strongly associated with balance and walking performance measures. Notably, no symmetry ratio was significantly associated with patient-reported prosthetic function (unadjusted Pearson correlation coefficients r < 0.50, P > 0.05). More gait symmetry was associated with better balance and walking performance but had no significant relationship with patient-reported function. Although achieving gait symmetry after lower limb loss is a common walking goal, symmetry was unrelated to the perception of functional mobility for people with lower limb loss.
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Affiliation(s)
- Christopher K. Wong
- Department of Rehabilitation and Regenerative Medicine, Columbia University Irving Medical Center, New York, NY, USA,CONTACT Christopher K. Wong Department of Rehabilitation and Regenerative Medicine, Columbia University Irving Medical Center, 617 West 168th St, Georgian-311, New York, NY10032, USA
| | | | - Kayla M. Moran
- Program in Physical Therapy, Columbia University, New York, NY, USA
| | - Carly M. Adler
- Program in Physical Therapy, Columbia University, New York, NY, USA
| | - Stanford T. Chihuri
- School of Public Health, Columbia University Irving Medical Center, New York, NY, USA
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Vaca M, Stine R, Hammond P, Cavanaugh M, Major MJ, Gard SA. The Effect of Prosthetic Ankle Dorsiflexion Stiffness on Standing Balance and Gait Biomechanics in Individuals with Unilateral Transtibial Amputation. JOURNAL OF PROSTHETICS AND ORTHOTICS : JPO 2022; 34:10.1097/JPO.0000000000000451. [PMID: 36407034 PMCID: PMC9670249 DOI: 10.1097/jpo.0000000000000451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Affiliation(s)
- Miguel Vaca
- Department of Biomedical Engineering - Northwestern University, Evanston, IL
- Jesse Brown VA Medical Center, Chicago, IL
- Northwestern University Prosthetics-Orthotics Center, Dept. of Physical Medicine & Rehabilitation, Feinberg School of Medicine, Chicago, IL
| | | | | | - Michael Cavanaugh
- Jesse Brown VA Medical Center, Chicago, IL
- Northwestern University Prosthetics-Orthotics Center, Dept. of Physical Medicine & Rehabilitation, Feinberg School of Medicine, Chicago, IL
| | - Matthew J. Major
- Department of Biomedical Engineering - Northwestern University, Evanston, IL
- Jesse Brown VA Medical Center, Chicago, IL
- Northwestern University Prosthetics-Orthotics Center, Dept. of Physical Medicine & Rehabilitation, Feinberg School of Medicine, Chicago, IL
| | - Steven A. Gard
- Department of Biomedical Engineering - Northwestern University, Evanston, IL
- Jesse Brown VA Medical Center, Chicago, IL
- Northwestern University Prosthetics-Orthotics Center, Dept. of Physical Medicine & Rehabilitation, Feinberg School of Medicine, Chicago, IL
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Rakbangboon T, Guerra G, Kla-arsa S, Padungjaroen U, Tangpornprasert P, Virulsri C, Sasaki K. High-Level Mobility of Trans-Tibial Prosthesis Users Wearing Commercial and sPace Energy-Storing Prosthetic Feet. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:12606. [PMID: 36231917 PMCID: PMC9566704 DOI: 10.3390/ijerph191912606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/27/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
UNLABELLED Outcomes of users provided with a commercial ESR Vari-Flex foot (Össur, Reykjavik, Iceland) and a locally designed sPace foot were investigated. Step activity with users' own prosthetic foot compared to the sPace foot was explored. METHODS Eleven individuals with unilateral trans-tibial amputation participated and were provided with an sPace and Vari-Flex foot. Ten- and twenty-meter walk tests (10/20MWT) at comfortable and fast walking speeds (CWS/FWS), the two-minute walk test (2-MWT) and Comprehensive High-Level Activity Mobility Predictor (CHAMP) were administered. A subgroup was provided a pedometer to record their steps over a 7-day period in their own foot and later the sPace. RESULTS The sPace foot performed well in a battery of high-level mobility outcome measures. On CHAMP, participants scored 16.94 ± 5.41 and 16.72 ± 6.09 with the sPace and Vari-Flex feet, respectively. Subgroup testing of step activity showed 4490 ± 3444 steps in users' own feet and 3115 ± 1967 in the sPace foot, p = 0.176. CONCLUSIONS Participants using the sPace foot were capable of performing walking, high-level mobility and activity outcome measures.
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Affiliation(s)
- Thanyaporn Rakbangboon
- Sirindhorn School of Prosthetics and Orthotics, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Gary Guerra
- Department of Exercise and Sport Science, St. Mary’s University, San Antonio, TX 78228, USA
| | - Saloottra Kla-arsa
- Sirindhorn School of Prosthetics and Orthotics, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Uthumporn Padungjaroen
- Sirindhorn School of Prosthetics and Orthotics, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Pairat Tangpornprasert
- Department of Mechanical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Chanyaphan Virulsri
- Department of Mechanical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Kazuhiko Sasaki
- Sirindhorn School of Prosthetics and Orthotics, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
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11
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Ernst M, Altenburg B, Schmalz T, Kannenberg A, Bellmann M. Benefits of a microprocessor-controlled prosthetic foot for ascending and descending slopes. J Neuroeng Rehabil 2022; 19:9. [PMID: 35090505 PMCID: PMC8796559 DOI: 10.1186/s12984-022-00983-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 01/03/2022] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Prosthetic feet are prescribed for persons with a lower-limb amputation to restore lost mobility. However, due to limited adaptability of their ankles and springs, situations like walking on slopes or uneven ground remain challenging. This study investigated to what extent a microprocessor-controlled prosthetic foot (MPF) facilitates walking on slopes. METHODS Seven persons each with a unilateral transtibial amputation (TTA) and unilateral transfemoral amputation (TFA) as well as ten able-bodied subjects participated. Participants were studied while using a MPF and their prescribed standard feet with fixed ankle attachments. The study investigated ascending and descending a 10° slope. Kinematic and kinetic data were recorded with a motion capture system. Biomechanical parameters, in particular leg joint angles, shank orientation and external joint moments of the prosthetics side were calculated. RESULTS Prosthetic feet- and subject group-dependent joint angle and moment characteristics were observed for both situations. The MPF showed a larger and situation-dependent ankle range of motion compared to the standard feet. Furthermore, it remained in a dorsiflexed position during swing. While ascending, the MPF adapted the dorsiflexion moment and reduced the knee extension moment. At vertical shank orientation, it reduced the knee extension moment by 26% for TFA and 49% for TTA compared to the standard feet. For descending, differences between feet in the biomechanical knee characteristics were found for the TTA group, but not for the TFA group. At the vertical shank angle during slope descent, TTA demonstrated a behavior of the ankle moment similar to able-bodied controls when using the MPF. CONCLUSIONS The studied MPF facilitated walking on slopes by adapting instantaneously to inclinations and, thus, easing the forward rotation of the leg over the prosthetic foot compared to standard feet with a fixed ankle attachment with amputation-level dependent effect sizes. It assumed a dorsiflexed ankle angle during swing, enabled a larger ankle range of motion and reduced the moments acting on the residual knee of TTA compared to the prescribed prosthetic standard feet. For individuals with TFA, the prosthetic knee joint seems to play a more crucial role for walking on ramps than the foot.
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Affiliation(s)
- Michael Ernst
- Research Biomechanics, CR&S, Ottobock SE & Co. KGaA, Göttingen, Germany
| | - Björn Altenburg
- Research Biomechanics, CR&S, Ottobock SE & Co. KGaA, Göttingen, Germany
| | - Thomas Schmalz
- Research Biomechanics, CR&S, Ottobock SE & Co. KGaA, Göttingen, Germany
| | | | - Malte Bellmann
- Research Biomechanics, CR&S, Ottobock SE & Co. KGaA, Göttingen, Germany
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Kannenberg A, Morris AR, Hibler KD. Free-Living User Perspectives on Musculoskeletal Pain and Patient-Reported Mobility With Passive and Powered Prosthetic Ankle-Foot Components: A Pragmatic, Exploratory Cross-Sectional Study. FRONTIERS IN REHABILITATION SCIENCES 2022; 2:805151. [PMID: 36188863 PMCID: PMC9397861 DOI: 10.3389/fresc.2021.805151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 12/22/2021] [Indexed: 11/13/2022]
Abstract
Introduction Studies with a powered prosthetic ankle-foot (PwrAF) found a reduction in sound knee loading compared to passive feet. Therefore, the aim of the present study was to determine whether anecdotal reports on reduced musculoskeletal pain and improved patient-reported mobility were isolated occurrences or reflect a common experience in PwrAF users. Methods Two hundred and fifty individuals with transtibial amputation (TTA) who had been fitted a PwrAF in the past were invited to an online survey on average sound knee, amputated side knee, and low-back pain assessed with numerical pain rating scales (NPRS), the PROMIS Pain Interference scale, and the PLUS-M for patient-reported mobility in the free-living environment. Subjects rated their current foot and recalled the ratings for their previous foot. Recalled scores were adjusted for recall bias by clinically meaningful amounts following published recommendations. Statistical comparisons were performed using Wilcoxon's signed rank test. Results Forty-six subjects, all male, with unilateral TTA provided data suitable for analysis. Eighteen individuals (39%) were current PwrAF users, whereas 28 subjects (61%) had reverted to a passive foot. After adjustment for recall bias, current PwrAF users reported significantly less sound knee pain than they recalled for use of a passive foot (−0.5 NPRS, p = 0.036). Current PwrAF users who recalled sound knee pain ≥4 NPRS with a passive foot reported significant and clinically meaningful improvements in sound knee pain (−2.5 NPRS, p = 0.038) and amputated side knee pain (−3 NPRS, p = 0.042). Current PwrAF users also reported significant and clinically meaningful improvements in patient-reported mobility (+4.6 points PLUS-M, p = 0.016). Individuals who had abandoned the PwrAF did not recall any differences between the feet. Discussion Current PwrAF users reported significant and clinically meaningful improvements in patient-reported prosthetic mobility as well as sound knee and amputated side knee pain compared to recalled mobility and pain with passive feet used previously. However, a substantial proportion of individuals who had been fitted such a foot in the past did not recall improvements and had reverted to passive feet. The identification of individuals with unilateral TTA who are likely to benefit from a PwrAF remains a clinical challenge and requires further research.
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Affiliation(s)
- Andreas Kannenberg
- Department of Clinical Research and Services, Otto Bock Healthcare LP, Austin, TX, United States
- *Correspondence: Andreas Kannenberg
| | - Arri R. Morris
- Department of Clinical Research and Services, Otto Bock Healthcare LP, Austin, TX, United States
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13
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Barnett CT, Hughes LD, Sullivan AE, Strutzenberger G, Levick JL, Bisele M, De Asha AR. Exploring the interaction of knee and ankle component use on mobility test performance in people with unilateral transfemoral amputation. Prosthet Orthot Int 2021; 45:470-476. [PMID: 34538818 DOI: 10.1097/pxr.0000000000000042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 07/27/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND Ankle-foot and knee components are important determinants of mobility for individuals with transfemoral amputation. Individually, advanced ankle-foot and knee components have been shown to benefit mobility in this group of people. However, it is not clear what effect a variety of combinations of ankle-foot and knee components have on mobility test performance. OBJECTIVES To assess whether outcomes from mobility tests in people with unilateral transfemoral amputation are influenced by varying combinations of ankle-foot and knee components. STUDY DESIGNS Repeated measures. METHODS Nine adults with unilateral transfemoral amputation completed the two-minute walk test, the timed up-and-go test, the L-test, and a custom locomotion course in four randomized prosthetic conditions. These conditions were each a combination of an ankle-foot component (rigid, nonarticulating [RIG] or hydraulically articulating [HYD]) and a knee component (non-microprocessor-controlled [NMPK] or microprocessor-controlled [MPK]). The test-retest reliability and concurrent validity of the custom locomotion course were also established. RESULTS The best performance in all mobility tests was associated with the MPK + HYD combination, followed by the MPK + RIG, NMPK + HYD, and NMPK + RIG combinations. This effect was statistically significant for the two-minute walk test (P = 0.01, = 0.36) and on threshold for the L-test (P = 0.05, = 0.36), but not statistically significant for the locomotion course (P = 0.07, = 0.38) or the timed up-and-go test (P = 0.12, = 0.22). Locomotion course performance had good to excellent test-retest reliability and strong concurrent validity. CONCLUSION Using a combination of a HYD ankle-foot and a MPK knee resulted in the highest performance in mobility tests. This was observed in contrast to combinations of prosthetic components that included a rigid ankle-foot component and/or a NMPK knee component.
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Affiliation(s)
- Cleveland T Barnett
- School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom
| | - Liam D Hughes
- School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom
| | - Amy E Sullivan
- University Hospitals of Derby and Burton NHS Trust, United Kingdom
| | - Gerda Strutzenberger
- Universitätsklinik Balgrist, Zürich, Switzerland
- Department of Sport and Exercise Science, University of Salzburg, Austria
| | - Jodie L Levick
- School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom
| | - Maria Bisele
- School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom
| | - Alan R De Asha
- School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom
- C-Motion, Inc., Germantown, Maryland
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14
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Ernst M, Altenburg B, Schmalz T. Characterizing adaptations of prosthetic feet in the frontal plane. Prosthet Orthot Int 2020; 44:225-233. [PMID: 32493118 DOI: 10.1177/0309364620917838] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND Energy-storage and return feet incorporate various design features including split toes. As a potential improvement, an energy-storage and return foot with a dedicated ankle joint was recently introduced allowing for easily accessible inversion/eversion movement. However, the adaptability of energy-storage and return feet to uneven ground and the effects on biomechanical and clinical parameters have not been investigated in detail. OBJECTIVES To investigate the design-related ability of prosthetic feet to adapt to cross slopes and derive a theoretical model. STUDY DESIGN Mechanical testing and characterization. METHODS Mechanical adaptation to cross slopes was investigated for six prosthetic feet measured by a motion capture system. A theoretical model linking the measured data with adaptations is proposed. RESULTS The type and degree of adaptation depends on the foot design, for example, stiffness, split toe or continuous carbon forefoot, and additional ankle joint. The model used shows high correlations with the measured data for all feet. CONCLUSIONS The ability of prosthetic feet to adapt to uneven ground is design-dependent. The split-toe feet adapted better to cross slopes than those with continuous carbon forefeet. Joints enhance this further by allowing for additional inversion and eversion. The influence on biomechanical and clinical parameters should be assessed in future studies. CLINICAL RELEVANCE Knowing foot-specific ability to adapt to uneven ground may help in selecting an appropriate prosthetic foot for persons with a lower limb amputation. Faster and more comprehensive adaptations to uneven ground may lower the need for compensations and therefore increase user safety.
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Affiliation(s)
- Michael Ernst
- Research Biomechanics, Clinical Research and Services, Ottobock SE & Co. KGaA, Göttingen, Germany
| | - Björn Altenburg
- Research Biomechanics, Clinical Research and Services, Ottobock SE & Co. KGaA, Göttingen, Germany
| | - Thomas Schmalz
- Research Biomechanics, Clinical Research and Services, Ottobock SE & Co. KGaA, Göttingen, Germany
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15
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Schnall BL, Dearth CL, Elrod JM, Golyski PR, Koehler-McNicholas SR, Ray SF, Hansen AH, Hendershot BD. A more compliant prosthetic foot better accommodates added load while walking among Servicemembers with transtibial limb loss. J Biomech 2020; 98:109395. [PMID: 31668413 DOI: 10.1016/j.jbiomech.2019.109395] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 10/03/2019] [Accepted: 10/06/2019] [Indexed: 11/16/2022]
Abstract
Selecting an optimal prosthetic foot is particularly challenging for highly active individuals with limb loss, such as military personnel, who need to seamlessly perform a variety of demanding activities/tasks (often with and without external loads) while minimizing risk of musculoskeletal injuries over the longer term. Here, we expand on prior work by comparing biomechanical and functional outcomes in two prosthetic feet with the largest differences in mechanical response to added load (i.e., consistently "Compliant" and "Stiff" forefoot properties). In each foot, fourteen male Servicemembers with unilateral transtibial limb loss (from trauma) completed instrumented gait analyses in all combinations of two loading conditions (with and without 22 kg weighted vest) and two walking speeds (1.34 and 1.52 m/s), as well as the Prosthesis Evaluation Questionnaire. With the Stiff foot, sound limb peak loading was 2% smaller (p = 0.043) in the loaded versus unloaded condition, but similar between loading conditions in the Compliant foot (note, the Stiff foot was associated with larger loads, overall). Independent of load or walking speed, the Compliant (versus Stiff) foot provided 67.9% larger (p < 0.001) prosthetic push-off, 17.7% larger (p = 0.01) roll-over shape radii, and was subjectively favored by 10 participants. A more Compliant versus Stiff prosthetic foot therefore appears to better accommodate walking with and without added load, and reinforce the notion that mechanical properties of prosthetic feet should be considered for near-term performance and longer-term (joint) health.
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Affiliation(s)
- Barri L Schnall
- Research & Development Section, Department of Rehabilitation, Walter Reed National Military Medical Center, Bethesda, MD, USA
| | - Christopher L Dearth
- Research & Development Section, Department of Rehabilitation, Walter Reed National Military Medical Center, Bethesda, MD, USA; DoD-VA Extremity Trauma and Amputation Center of Excellence, Bethesda, MD, USA; Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Jonathan M Elrod
- Research & Development Section, Department of Rehabilitation, Walter Reed National Military Medical Center, Bethesda, MD, USA
| | - Pawel R Golyski
- Research & Development Section, Department of Rehabilitation, Walter Reed National Military Medical Center, Bethesda, MD, USA
| | - Sara R Koehler-McNicholas
- Minneapolis Department of Veterans Affairs Health Care System, Minneapolis, MN, USA; Division of Rehabilitation Science, Department of Rehabilitation Medicine, University of Minnesota, Minneapolis, MN, USA
| | - Samuel F Ray
- Research & Development Section, Department of Rehabilitation, Walter Reed National Military Medical Center, Bethesda, MD, USA
| | - Andrew H Hansen
- Minneapolis Department of Veterans Affairs Health Care System, Minneapolis, MN, USA; Division of Rehabilitation Science, Department of Rehabilitation Medicine, University of Minnesota, Minneapolis, MN, USA
| | - Brad D Hendershot
- Research & Development Section, Department of Rehabilitation, Walter Reed National Military Medical Center, Bethesda, MD, USA; DoD-VA Extremity Trauma and Amputation Center of Excellence, Bethesda, MD, USA; Department of Rehabilitation Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, USA.
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Müller R, Tronicke L, Abel R, Lechler K. Prosthetic push-off power in trans-tibial amputee level ground walking: A systematic review. PLoS One 2019; 14:e0225032. [PMID: 31743353 PMCID: PMC6863538 DOI: 10.1371/journal.pone.0225032] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 10/09/2019] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE Unilateral trans-tibial amputation signifies a challenge to locomotion. Prosthetic ankle-foot units are developed to mimic the missing biological system which adapts push-off power to walking speed in some new prosthetic ankle-foot designs. The first systematic review including the two factors aims to investigate push-off power differences among Solid Ankle Cushion Heel (SACH), Energy Storage And Return (ESAR) and Powered ankle-foot units (PWR) and their relation to walking speed. DATA SOURCES A literature search was undertaken in the Web of Science, PubMed, IEEE xplore, and Google Scholar databases. The search term included: ampu* AND prosth* AND ankle-power AND push-off AND walking. STUDY APPRAISAL AND SYNTHESIS METHODS Studies were included if they met the following criteria: unilateral trans-tibial amputees, lower limb prosthesis, reported analysis of ankle power during walking. Data extracted from the included studies were clinical population, type of the prosthetic ankle-foot units (SACH, ESAR, PWR), walking speed, and peak ankle power. Linear regression was used to determine whether the push-off power of different prosthetic ankle-foot units varied regarding walking speed. Push-off power of the different prosthetic ankle-foot units were compared using one-way between subjects' ANOVAs with post hoc analysis, separately for slower and faster walking speeds. RESULTS 474 publications were retrieved, 28 of which were eligible for inclusion. Correlations between walking speed and peak push-off power were found for ESAR (r = 0.568, p = 0.006) and PWR (r = 0.820, p = 0.000) but not for SACH (r = 0.267, p = 0.522). ESAR and PWR demonstrated significant differences in push-off power for slower and faster walking speeds (ESAR (p = 0.01) and PWR (p = 0.02)). CONCLUSION Push-off power can be used as a selection criterion to differentiate ankle-foot units for prosthetic users and their bandwidth of walking speeds.
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Affiliation(s)
- Roy Müller
- Department of Orthopedic Surgery, Klinikum Bayreuth GmbH, Bayreuth, Germany
- Institute of Sport Sciences, Friedrich Schiller University Jena, Jena, Germany
| | | | - Rainer Abel
- Department of Orthopedic Surgery, Klinikum Bayreuth GmbH, Bayreuth, Germany
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