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The application of the strip-shaped cymba conchae orthosis in the nonsurgical correction of complex auricular deformity

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Journal of Otology 2024年第1期19卷 24-29页

作者： Huijuan Xu Shaoguang Ding Fei Zhang Zhifeng Zhang Xiangyu Chen Mingyang Li Haitao Yang Fugen Han Hongjian Liu Department of Otolaryngology Head and Neck Surgery People’s Hospital of Henan UniversityHenan Provincial People’s HospitalZhengzhouChina Department of Otolaryngology Head and Neck Surgery Henan Provincial People’s HospitalPeople’s Hospital of Zhengzhou UniversityPeople’s Hospital of Henan UniversityZhengzhouChina Department of Otolaryngology Head and Neck Surgery Henan Children’s HospitalZhengzhouChina Department of Otolaryngology Head and Neck Surgery The Third People’s Hospital of ZhengzhouZhengzhouChina Zheng Dong Mihuan Clinic ZhengzhouChina

Objective: This study aims to evaluate the efficacy and safety of using a strip-shaped cymba conchae orthosis for the nonsurgical correction of complex auricular deformities. Methods: Clinical data were collected from 2020 to 2021 for 6 patients who underwent correction using a stripshaped cymba conchae orthosis. The indications, corrective effects, and complications associated with use of the orthosis were analyzed. Results: There were four indications for treatment: cryptotia with helix adhesion;cryptotia with grade I microtia;cryptotia with excessive helix thickness;and auricular deformity beyond the treatment time window(≥6 months). Excellent corrective effects were observed in all 6 patients. Complications occurred in one patient, who recovered after symptomatic treatment. Conclusion: The use of a strip-shaped cymba conchae orthosis alone or combined with a U-shaped helix orthosis presents a feasible approach for correcting complex auricular deformities or deformities beyond the treatment time window in pediatric patients.

关键词： Cymba conchae Auricular deformity Cryptotia Nonsurgical correction orthosis

A Novel Knee orthosis in the Treatment of Patellofemoral Pain Syndrome

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Open Journal of Therapy and Rehabilitation 2015年第2期3卷 56-61页

作者： Michael J. Khadavi Y. T. Chen Michael Fredericson Carondelet Orthopaedic Surgeons and Sports Medicine Overland Park KS USA

Context: Patellofemoral Pain (PFPS) accounts for up to 25% of knee injuries in sports medicine clinics, with up to 91% of symptoms unresolved after conservative treatment at 5 years. The variability of response to treatment reflects its multi-factorial biomechanical etiologies. Bracing has been utilized to modify patellofemoral kinematics, generally by increasing patellofemoral contact area. The DJO Reaction orthosis is unique in its shock-absorbing elastomeric design, which is created to dissipate peak stress and enhance patellar tracking. Objective: To assess whether the DJO Reaction Brace reduces pain and improves functional outcomes in patients with chronic PFPS. Design: Cohort Series. Setting: Academic Sports Medicine Clinic. Patients: Twenty-two individuals between 18 and 40 years old with chronic patellofemoral pain have failed conservative treatment. Intervention: DJO Reaction Brace. Main Outcome Measures: Kujala Anterior Knee Pain Scale, Knee Injury and Osteoarthritis Outcome Score. Results: Seven males and 10 females with an age range of 19 - 39 years old complete the study. At an average follow-up time of 55 days, the Kujala score significantly improves by 9.8%, and KOOS Scores increase by the following statistically significant amounts: symptom 3.2%, pain 10.7%, sports and recreation 12.9%, quality of life 20.2%. Conclusion: The DJO Reaction orthosis reduces knee pain, increases function, and enhances quality of life with individuals with PFPS and is effective in the conservative care of patellofemoral pain syndrome.

关键词： Knee orthosis Knee Injuries Treatment Patellofemoral Kinematics

Customized Foot orthosis Development by 3D Reconstruction of the CT Images

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Engineering（科研） 2012年第10期4卷 692-695页

作者： Sathish Kumar Paul Sudesh Sivarasu Lazar Mathew Biomedical Engineering Division SBST VIT University India Biomedical Engineering Division University of Cape Town South Africa ^PSG Tech Coimbatore India

Clinicians can provide a means to better distribute the pressure around the foot, and can also correct the biomechanics of the foot by using a customized shoe insole. If detected early enough, orthopedic insoles can correct or prevent further complications. In this study the 3 Dimensional (D) model of the foot was used to fabricate a customized orthosis. The Computed Tomography (CT) images of patient’s foot having no muscle weakness and joint restriction were acquired. The gray intensities corresponding to the bones of the foot from the CT images were 3 dimensionally reconstructed. The 3D model of the foot was then imported into the CAD Software. Boolean operations were carried out in between the 3D foot model and a solid rectangular surface to create a customized foot orthosis. The exact contours and shape of the subject’s foot was acquired using the computerized method of fabricating an orthosis. The novel idea described in this study support, automating the process of designing a customized orthosis with the impression got from the 3 dimensionally modeled feet, thereby reducing the modeling time considerably. The simple technique used in this process will help in giving comfort and stability to the patient’s feet while walking.

关键词： Customized orthosis 3 Dimensional Foot Model Plantar Pressure

Static and Dynamic Analysis of Osteoarthritic and Orthotic Human Knee

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Journal of Bionic Engineering 2019年第3期16卷 514-525页

作者： Daniela Tarnita Doina Pisla Ionut Geonea Calin Vaida Marius Catana Danut Nicolae Tarnita University of Craiova Faculty of Mechanics Calea Bucuresti no. 107 200512 Craiova Romania Technical University Cluj Napoca CESTER - Research Centre for the Robot Simulation and Testing Memorandumului str. no. 28400114 Cluj-Napoca Romania INAS Nicolae Romanescu Blvd 37C 200738 Craiova Romania University of Medicine and Pharmacy Craiova & Emergency Hospital Craiova Craiova Petru Rares str. no. 2 200349 Romania

The first objective of this paper is to study the influence of the orthotic device on the maximum values of stresses in knee cartilages by using Ansys Workbench 14.5 software and applying the Finite Element Analysis (FEA) on a virtual assembly composed by an orthotic device and osteoarthritic knee (OAK). The second objective consists into quantifying and investigating the nonlinear motion of the human knee joint for OAK patients, with and without the orthotic device mounted on OAK, using tools of dynamics stability analysis. The short Lyapunov Exponents (LEs) are calculated, as measures of human knee and ankle joints stability, based on the experimental time series collected by using the biometrics acquisition system during walking on horizontal and inclined treadmills from a sample of healthy subjects and a sample of patients suffering by OAK disease. The values of LEs obtained for OAK patients are larger on the inclined treadmill than on horizontal treadmill and are larger than those obtained for healthy knees, being associated with more divergence and less stability. The results confirm that the influence of an orthotic device mounted on OAK on its stability is significant, the values obtained for LEs being smaller than those calculated for OAK, and closer to the values of normal knees of patients and of healthy subjects.

关键词： osteoarthritic knee bioinspired orthosis finite element method gait stability Lyapunov exponents

Resection with limb salvage in an Asian male adolescent withEwing’s sarcoma: A case report

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World Journal of Clinical Cases 2022年第22期10卷 7960-7967页

作者： Chien-Ying Lai Kuan-Ju Chen Tsung-Yu Ho Ling-Yi Li Chien-Chung Kuo Hsien-Te Chen Yi-Chin Fong Department of Orthopedic Surgery China Medical University HospitalTaichung 404Taiwan Spine Center China Medical University HospitalTaichung 404Taiwan School of Medicine China Medical UniversityTaichung 404Taiwan

BACKGROUNDEwing’s sarcoma is a highly malignant primary bone tumor that commonly affectschildren. For young patients, multidisciplinary treatment and limb salvage arerecommended, and surgical plans considering the growth potential and boneactivity after tumor resection are *** SUMMARYAn 11-year-old Asian boy had a 1-mo history of a right-sided limping *** revealed a proximal tumor with bone destruction and physealinvolvement over the right femoral neck. He was diagnosed with stage IV(T1N0M1aG3) Ewing’s sarcoma with bilateral lung metastases. Neoadjuvantchemotherapy decreased the tumor size and confined it to the metaphysealregion. The patient underwent four stages of surgery: wide tumor excision plusreconstruction with vascular fibular bone graft plus internal fixation;repeat openreduction and internal fixation;femoral lengthening with orthosis after physealmaturity;and orthosis removal and bone elongation (approximately 6 cm).Following surgery, he could walk without discomfort and had almost equal-sizedbilateral femoral heads, indicating physis preservation. The surgery wassuccessful, and normal femoral head growth was achieved after completeremission. The patient was able to resume normal activities with equal length ofthe bilateral lower *** treatment and reconstruction following resection are important in skeletally immature patients with Ewing’s sarcoma to improve quality of life.

关键词： Ewing’s sarcoma Lower limb discrepancy orthosis Vascular fibular graft Reconstruction Case report

Prosthetic and orthotic options for lower extremity amputation and reconstruction

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Plastic and Aesthetic Research 2019年第2期6卷 8-22页

作者： Christopher S.Crowe Kate A.Impastato Alex C.Donaghy Caryn Earl Janna L.Friedly Kari A.Keys Division of Plastic and Reconstructive Surgery Department of SurgeryUniversity of Washington School of MedicineSeattleWA 98104USA Department of Rehabilitation Medicine University of Washington School of MedicineSeattleWA 98104USA Prosthetics and Orthotics Clinic Harborview Medical CenterSeattleWA 98109USA

Lower extremity injury and deformity can result from a number of etiologies. Regardless of the underlying cause, the decision to pursue amputation or reconstruction of a lower limb is challenging for both patients and *** decision is largely dependent on the patient's premorbid health and function, functional goals and preferences,and characteristics and viability of the affected limb. The role of adaptive devices following surgery should never be underestimated. Advances in prostheses and orthoses have provided patients with a wider range of options to consider when deciding between limb reconstruction and amputation. The primary goals of any adaptive device are to improve function, prevent recurrence or ulceration of the defect, and allow for use of conventional footwear and/or *** a lower extremity amputation is indicated, selection of the correct level is of critical importance in order to optimize healing potential and function. Each distinct level has certain inherent prosthetic and orthotic considerations. Likewise,the application of an adaptive device following reconstruction of the lower extremity also has demonstrable benefits and must be tailored to the specific defect and procedure performed. Knowledge of available prosthetic and orthotic options is of considerable importance for the reconstructive surgeon tasked with limb salvage or resurfacing an amputated extremity. This article reviews considerations of various types of lower extremity amputation and reconstruction, and provides a framework for the role of adaptive devices following surgery.

关键词： Prosthesis orthosis amputation reconstruction rehabilitation lower extremity

Unpowered Knee Exoskeleton Reduces Quadriceps Activity during Cycling

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Engineering 2018年第4期4卷 471-478页

作者： Ronnapee Chaichaowarat Jun Kinugawa Kazuhiro Kosuge Department of Robotics Tohoku University Sendal 980-8579 Japan

Cycling is an eco-friendly method of transport and recreation. With the intent of reducing the energy cost of cycling without providing an additional energy source, we have proposed the use of a torsion spring for knee-extension support. We developed an exoskeleton prototype using a crossing four-bar mechanism as a knee joint with an embedded torsion spring. This study evaluates the passive knee exoskeleton using constant-power cycling tests performed by eight healthy male participants. We recorded the surface electromyography over the rectus femoris muscles of both legs, while the participants cycled at 200 and 225 W on a trainer with the developed wheel-accelerating system. We then analyzed these data in time-frequency via a continuous wavelet transform. At the same cycling speed and leg cadence, the median power spectral frequency of the electromyography increases with cycling load. At the same cycling load, the median power spectral frequency decreases when cycling with the exoskeleton. Quadriceps activity can be relieved despite the exoskeleton consuming no electrical energy and not delivering net-positive mechanical work. This fundamental can be applied to the further development of wearable devices for cycling assistance.

关键词： Augmentation Cycling Energy cost Electromyography Exoskeleton Knee orthosis Muscle activity

Academic fluid power research in the USA

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International Journal of Hydromechatronics 2018年第1期1卷 126-152页

作者： Kim A. Stelson Department of Mechanical Engineering Center for Compact and Efficient Fluid Power University of Minnesota 111 Church Street SE Minneapolis MN 55455 USA

With the formation of the Center for Compact and Efficient Fluid Power （CCEFP） in 2006, there has been a resurgence of academic fluid power research in the USA. The centre’s vision is to make fluid power the technology of choice for power generation, transmission, storage, and motion control. To address fluid power’s key technical barriers, the CCEFP research strategy supports and coordinates pre-competitive research in three thrust areas： efficiency, compactness and effectiveness, where effectiveness means making fluid power safer, easier to use, leak free and quiet. This paper reviews some of the most important results from the first decade of CCEFP research.

关键词： fluid power hydraulics efficiency compactness rheology tribology seals Stirling engine free piston engine hydraulic pumps hydraulic motors valves digital hydraulics energy harvester acoustic silencer accumulator displacement control hydraulic hybrid excavator orthosis hydrostatic transmission wind power.

The Role of Orthotic Service in Modern Rehabilitation of Patients with Charcot-Marie-Tooth Disease

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Journal of Biosciences and Medicines 2018年第7期6卷 23-34页

作者： Olga V. Petryaeva Natalia A. Shnayder Ivan P. Artyukhov Margarita R. Sapronova Irina O. Loginova V.F. Voyno-Yasenetsky Krasnoyarsk State Medical University Krasnoyarsk Russia V.M. Bechterev National Medical Research Center of Psychiatry and Neurology Sankt-Petersburg Russia

Charcot-Marie-Tooth (CMT) disease, which encompasses several hereditary motor and sensory neuropathies, is one of the most common neuro-muscular disorders. 80% of patients having CMT disease are diagnosed with per cavus deformity. orthosis is widespread and varies widely in forms. The paper arises the necessity of habilitation at the earliest possible stage as only a few patients use it. The meta-analysis of 412 scientific papers concerning this problem demonstrates the getting better gate, balance and the stopping CMT progression which is scientifically proven. It is also shown that patients with CMT use low prevalence of orthotics, and demonstrate low compliance of patients (for various reasons), high expectations from this habilitation technique.

关键词： Charcot-Marie-Tooth Disease (CMT) Habilitation Rehabilitation Heredi-tary Sensori-Motor Neuropathies (HSMN) Contractures orthosis Demye-linating Diseases (DMD) Orthotic Management Ankle-Foot Orthoses (AFOs)