{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,16]],"date-time":"2026-06-16T10:38:35Z","timestamp":1781606315761,"version":"3.54.5"},"reference-count":28,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2021,1,8]],"date-time":"2021-01-08T00:00:00Z","timestamp":1610064000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Typically, the actual volume of the residual limb changes over time. This causes the prosthesis to not fit, and then pain and skin disease. In this study, a prosthetic socket was developed to compensate for the volume change of the residual limb. Using an inflatable air bladder, the proposed socket monitors the pressure in the socket and keeps the pressure distribution uniform and constant while walking. The socket has three air bladders on anterior and posterior tibia areas, a latching type 3-way pneumatic valve and a portable control device. In the paper, the mechanical properties of the air bladder were investigated, and the electromagnetic analysis was performed to design the pneumatic valve. The controller is based on a hysteresis control algorithm with a closed loop, which keeps the pressure in the socket close to the initial set point over a long period of time. In experiments, the proposed prosthesis was tested through the gait simulator that can imitate a human\u2019s gait cycle. The active volume compensation of the socket was successfully verified during repetitive gait cycle using the weight loads of 50, 70, and 90 kg and the residual limb model with a variety of volumes. It was confirmed that the pressure of the residual limb recovered to the initial state through the active control. The pressure inside the socket had a steady state error of less than 0.75% even if the volume of the residual limb was changed from \u22127% to +7%.<\/jats:p>","DOI":"10.3390\/s21020407","type":"journal-article","created":{"date-parts":[[2021,1,10]],"date-time":"2021-01-10T23:03:42Z","timestamp":1610319822000},"page":"407","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["A Prosthetic Socket with Active Volume Compensation for Amputated Lower Limb"],"prefix":"10.3390","volume":"21","author":[{"given":"Ji-Hyeon","family":"Seo","sequence":"first","affiliation":[{"name":"Daegu Research Center for Medical Devices, Korea Institute of Machinery and Materials, Daegu 42994, Korea"},{"name":"School of Mechanical Engineering, College of Engineering, Kyungpook National University, Daegu 41566, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hyuk-Jin","family":"Lee","sequence":"additional","affiliation":[{"name":"Daegu Research Center for Medical Devices, Korea Institute of Machinery and Materials, Daegu 42994, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9449-7772","authenticated-orcid":false,"given":"Dong-Wook","family":"Seo","sequence":"additional","affiliation":[{"name":"Department of Radio Communication Engineering\/Interdisciplinary Major of Maritime AI Convergence, Korea Maritime and Ocean University, Busan 49112, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1156-5168","authenticated-orcid":false,"given":"Dong-Kyu","family":"Lee","sequence":"additional","affiliation":[{"name":"Daegu Research Center for Medical Devices, Korea Institute of Machinery and Materials, Daegu 42994, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9830-9943","authenticated-orcid":false,"given":"Oh-Won","family":"Kwon","sequence":"additional","affiliation":[{"name":"Daegu Research Center for Medical Devices, Korea Institute of Machinery and Materials, Daegu 42994, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Moon-Kyu","family":"Kwak","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, College of Engineering, Kyungpook National University, Daegu 41566, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kang-Ho","family":"Lee","sequence":"additional","affiliation":[{"name":"Daegu Research Center for Medical Devices, Korea Institute of Machinery and Materials, Daegu 42994, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,1,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"31","DOI":"10.4314\/ejhs.v28i1.5","article-title":"Patterns and causes of amputation in ayder referral hospital, mekelle, ethiopia: A three-year experience","volume":"28","author":"Berhe","year":"2018","journal-title":"Ethiop. J. Health Sci."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2453","DOI":"10.2337\/dc20-0586","article-title":"National and State-Level Trends in Nontraumatic Lower-Extremity Amputation Among U.S. Medicare Beneficiaries with Diabetes, 2000\u20132017","volume":"43","author":"Harding","year":"2020","journal-title":"Diabetes Care"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1186\/s12984-020-00711-4","article-title":"Technology for monitoring everyday prosthesis use: A systematic review","volume":"17","author":"Chadwell","year":"2020","journal-title":"J. Neuroeng. Rehabil."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Haleem, S., Yousaf, S., Hamid, T., Nagappa, S., and Parker, M.J. (2020). Characteristics and outcomes of hip fractures in lower limb amputees. Injury.","DOI":"10.1016\/j.injury.2020.10.017"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"123","DOI":"10.1016\/j.medengphy.2020.05.007","article-title":"Analysis of compression\/release stabilized transfemoral prosthetic socket by finite element modelling method","volume":"83","author":"Meng","year":"2020","journal-title":"Med. Eng. Phys."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1996","DOI":"10.1109\/TBME.2017.2775100","article-title":"Sockets for Limb Prostheses: A Review of Existing Technologies and Open Challenges","volume":"65","author":"Paterno","year":"2018","journal-title":"IEEE Trans. Biomed. Eng."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"194","DOI":"10.1108\/13552541011034861","article-title":"Design of an actively actuated prosthetic socket","volume":"16","author":"Montgomery","year":"2010","journal-title":"Rapid Prototyp. J."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1177\/0309364618785729","article-title":"Effects of activity intensity, time, and intermittent doffing on daily limb fluid volume change in people with transtibial am-putation","volume":"43","author":"Youngblood","year":"2019","journal-title":"Prosthet. Orthot. Int."},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Weathersby, E.J., Gurrey, C.J., McLean, J.B., Sanders, B.N., Larsen, B.G., Carter, R.V., Garbini, J.L., and Sanders, J.E. (2019). Thin Magnetically Permeable Targets for Inductive Sensing: Application to Limb Prosthetics. Sensors, 19.","DOI":"10.3390\/s19184041"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"360","DOI":"10.1177\/0309364611423130","article-title":"A new approach for the pistoning measurement in transtibial prosthesis","volume":"35","author":"Gholizadeh","year":"2011","journal-title":"Prosthet. Orthot. Int."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Henrikson, K.M., Weathersby, E.J., Larsen, B.G., Cagle, J.C., McLean, J.B., and Sanders, J.E. (2018). An Inductive Sensing System to Measure In-Socket Residual Limb Displacements for People Using Lower-Limb Prostheses. Sensors, 18.","DOI":"10.3390\/s18113840"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"669","DOI":"10.3233\/THC-191637","article-title":"Is skin pressure a relevant factor for socket assessment in patients with lower limb amputation?","volume":"27","author":"Dakhil","year":"2019","journal-title":"Technol. Health Care"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"23724","DOI":"10.3390\/s141223724","article-title":"Piezoelectric Bimorphs\u2019 Characteristics as In-Socket Sensors for Transfemoral Amputees","volume":"14","author":"Hamzaid","year":"2014","journal-title":"Sensors"},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Al-Fakih, E.A., Osman, N.A., and Adikan, F.R.M. (2016). Techniques for Interface Stress Measurements within Prosthetic Sockets of Transtibial Amputees: A Revies of the Past 50 Years of Research. Sensors, 16.","DOI":"10.3390\/s16071119"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"2466","DOI":"10.1109\/TMECH.2016.2578679","article-title":"In-Socket Sensory System for Transfemoral Amputees Using Piezoelectric Sensors: An Efficacy Study","volume":"21","author":"Jasni","year":"2016","journal-title":"IEEE\/ASME Trans. Mechatron."},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Carrigan, W., Nothnagle, C., Savant, P., Gao, F., and Wijesundara, M.B.J. (2016, January 26\u201329). Pneumatic Actuator Inserts for Interface Pressure Mapping and Fit Improvement in Lower Extremity Prosthetics. Proceedings of the 2016 6th IEEE International Conference on Biomedical Robotics and Biomechatronics (BioRob), Singapore.","DOI":"10.1109\/BIOROB.2016.7523687"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"16754","DOI":"10.3390\/s140916754","article-title":"Development of an Air Pneumatic Suspension System for Transtibial Prostheses","volume":"14","author":"Pirouzi","year":"2014","journal-title":"Sensors"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"36","DOI":"10.1109\/TBME.2020.2992739","article-title":"Automatic Control of Prosthetic Socket Size for People with Transtibial Amputation: Implementation and Evaluation","volume":"68","author":"Weathersby","year":"2021","journal-title":"IEEE Trans. Biomed. Eng."},{"key":"ref_19","first-page":"78","article-title":"A review of gait cycle and its parameters","volume":"13","author":"Kharb","year":"2011","journal-title":"Int. J. Comput. Eng. Manag."},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Zahradka, N., Behboodi, A., Wright, H., Bodt, B., and Lee, S.C.K. (2019). Evaluation of Gait Phase Detection Delay Compensation Strategies to Control a Gyroscope-Controlled Functional Electrical Stimulation System During Walking. Sensors, 19.","DOI":"10.3390\/s19112471"},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Aqueveque, P., Germany, E., Osorio, R., and Pastene, F. (2020). Gait Segmentation Method Using a Plantar Pressure Measurement System with Custom-Made Capacitive Sensors. Sensors, 20.","DOI":"10.3390\/s20030656"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"36","DOI":"10.1109\/2944.748103","article-title":"Compact latching-type single-mode-fiber switches fabricated by a fiber-micromachining technique and their practical applications","volume":"5","author":"Nagaoka","year":"1999","journal-title":"IEEE J. Sel. Top. Quantum Electron."},{"key":"ref_23","doi-asserted-by":"crossref","unstructured":"Wang, H., and El Wahed, A.K. (2020). Development of a Novel Latching-Type Electromagnetic Actuator for Applications in Minimally Invasive Surgery. Actuators, 9.","DOI":"10.3390\/act9020041"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"595","DOI":"10.3390\/app5030595","article-title":"Design of a Solenoid Actuator with a Magnetic Plunger for Miniaturized Segment Robots","volume":"5","author":"Song","year":"2015","journal-title":"Appl. Sci."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"276","DOI":"10.1016\/j.sna.2018.10.026","article-title":"Design optimization of a solenoid-based electromagnetic soft actuator with permanent magnet core","volume":"284","author":"Ebrahimi","year":"2018","journal-title":"Sens. Actuators A Phys."},{"key":"ref_26","doi-asserted-by":"crossref","unstructured":"Kouzou, A. (2018). Power Factor Correction Circuits. Power Electronics Handbook, Butterworth-Heinemann.","DOI":"10.1016\/B978-0-12-811407-0.00017-9"},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Ellis, G. (2012). Nonlinear Behavior and Time Variation. Control System Design Guide, Kollmorgen Corporation.","DOI":"10.1016\/B978-0-12-385920-4.00012-6"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"60142","DOI":"10.1109\/ACCESS.2020.2977656","article-title":"A Space Vector Switching Pattern Hysteresis Control Strategy in VIENNA Rectifier","volume":"8","author":"Li","year":"2020","journal-title":"IEEE Access"}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/21\/2\/407\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T05:08:49Z","timestamp":1760159329000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/21\/2\/407"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,1,8]]},"references-count":28,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2021,1]]}},"alternative-id":["s21020407"],"URL":"https:\/\/doi.org\/10.3390\/s21020407","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,1,8]]}}}