scholarly journals Isolated Arteritis of Both Lower Limbs

2018 ◽  
Vol 119 (1) ◽  
pp. 70-75
Author(s):  
Miroslav Průcha ◽  
Alena Šnajdrová ◽  
Pavel Zdráhal
Keyword(s):  
Autoimmune Disease ◽  
Lower Extremity ◽  
Lower Limb ◽  
Imaging Techniques ◽  
Rare Condition ◽  
Rapid Diagnosis ◽  
Vascular Imaging ◽  
Lower Limbs ◽  
Systemic Autoimmune Disease ◽  
Successful Therapy

Isolated arteritis of the lower limb vessels is an extremely rare condition. The use of modern vascular imaging techniques substantially facilitates and accelerates the diagnostics. In the isolated lower limb arteritis, it is always necessary to exclude Takayasu’s and giant-cell arteritis. We present the case of a female patient with an isolated lower extremity arteritis without any other symptoms of systemic vascular damage or systemic autoimmune disease. Immunosuppressive therapy is obligatory in this case. Interdisciplinary co-operation is required for rapid diagnosis and successful therapy. Our patient has consented to the publication of this report.

scholarly journals Intramedullary glioblastoma multiforme in young patients: A case report and brief review

2021 ◽  
Vol 0 ◽  
pp. 1-5
Author(s):  
Pedro Lukas do Rêgo Aquino ◽  
Erlan Pércio Lopes Rufino ◽  
Assíria Maria Santana Santos ◽  
Luana Cristina Rodrigues de Oliveira Costa ◽  
Camila Flach Weinmann ◽  
...  
Keyword(s):  
Glioblastoma Multiforme ◽  
Lower Limb ◽  
Patient Survival ◽  
Current Knowledge ◽  
Young Patients ◽  
Rare Condition ◽  
Lower Limbs ◽  
Age Group ◽  
Young Population ◽  
Intramedullary Lesion

Cervical glioblastoma multiforme (GBM) is rare, and its early diagnosis and management is crucial to patient survival. In the young population, it’s even more difficult to diagnose. The main challenges in GBM therapy are associated with the location of the disease and its complex and heterogeneous biology. Here, we present a case of a 35-year-old female patient admitted due to complain of pain in her right lower limb. She reported the evolution of the condition for dysesthesia in upper limbs and lower limbs 4 weeks ago. MRI showed an intramedullary lesion extending from C2 to C5. The patient was managed surgically. The purpose of this report is to document this rare condition, especially in the young age group, and reveal the current knowledge regarding intramedullary GBM.

Push recovery control for the underactuated lower extremity exoskeleton based on improved capture point concept

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Jiaqi Zhang ◽  
Ming Cong ◽  
Dong Liu ◽  
Yu Du ◽  
Hongjiang Ma
Keyword(s):  
Lower Extremity ◽  
Ankle Joint ◽  
Lower Limb ◽  
Biped Robot ◽  
Lower Limbs ◽  
Simple Method ◽  
Content Type ◽  
Torsion Spring ◽  
Balance Ability ◽  
Capture Point

Purpose The purpose of this paper is to use a simple method to enhance the ability of lower limb exoskeletons to restore balance under large interference conditions and to solve the problem that biped robot stability criterion cannot be fully applied to the underactuated lower limb exoskeletons. Design/methodology/approach The method used in this paper is to construct an underactuated lower extremity exoskeleton ankle joint with a torsion spring. Based on the constructed exoskeleton, the linear inverted torsion spring pendulum model is proposed, and the traditional capture point (CP) concept is optimized. Findings The underactuated exoskeleton ankle joint with torsion springs, combined with the improved CP concept, can effectively reduce the forward stepping distance under the same interference condition, which is equivalent to enhancing the balance ability of the lower extremity exoskeleton. Originality/value The contribution of this paper is to enhance the balance ability of the exoskeleton of the lower limbs under large interference conditions. The torsion spring is used as the exoskeleton ankle joint, and the traditional CP concept is optimized according to the constructed exoskeleton.

Lower Limb Flexibility in Children With Duchenne Muscular Dystrophy: Effects on Functional Performance

2019 ◽  
Vol 31 (1) ◽  
pp. 42-46
Author(s):  
Lütfiye Akkurt ◽  
İpek Alemdaroğlu Gürbüz ◽  
Ayşe Karaduman ◽  
Öznur Tunca Yilmaz
Keyword(s):  
Duchenne Muscular Dystrophy ◽  
Muscular Dystrophy ◽  
Lower Extremity ◽  
Lower Limb ◽  
Functional Performance ◽  
Lower Limbs ◽  
Performance Tests ◽  
Gastrocnemius Muscles ◽  
Minute Walk ◽  
Walk Tests

Objective: To investigate the effects of lower limb flexibility on the functional performance of children with Duchenne muscular dystrophy. Methods: Thirty children, whose functional levels were at 1 or 2 according to the Brooke Lower Extremity Functional Classification Scale, were included in this study. The flexibilities of the hamstrings, hip flexors, tensor fascia latae, and gastrocnemius muscles were evaluated in the children’s dominant lower limbs. The children’s functional performance was assessed using 6-minute walk tests and timed performance tests. The correlations between the flexibilities of the lower limb muscles and the performance tests were examined. Results: The flexibilities of the lower extremity muscles were found to be correlated to the 6-minute walk tests and the timed performance tests. The flexibility of the hamstrings (r = −.825), the gastrocnemius muscles (r = .545), the hip flexors (r = .481), and the tensor fascia latae (r = .445) were found to be correlated with functional performance as measured by the 6-minute walk tests (P < .05). Discussion: The results of the current study indicate that the flexibility of the lower limbs has an effect on functional performance in the early stages of Duchenne muscular dystrophy. More research is needed to determine the functional effects of flexibility on performance by adding long-term flexibility exercises to the physiotherapy programs of children with Duchenne muscular dystrophy.

Evaluation of Lower Limb Injury Mitigation Techniques for High Velocity Impacts With the Mil-LX

2011 ◽  
Author(s):  
Jennifer L. Serres ◽  
Dan V. Jones ◽  
Rabih E. Tannous ◽  
Nathan Dau ◽  
Cynthia A. Bir
Keyword(s):  
Lower Extremity ◽  
Lower Limb ◽  
Axial Loading ◽  
Critical Factor ◽  
Lower Limbs ◽  
Lower Limb Injury ◽  
Lower Extremity Injuries ◽  
Axial Forces ◽  
Limb Injuries ◽  
Mitigation Techniques

Improvised Explosive Devices (IED) and landmines present a significant threat to mounted troops currently serving in Iraq and Afghanistan. As a result of these threats, a substantial number of lower limb injuries are sustained by service members. Due to this reality, a critical factor in military vehicle design is the mitigation of lower limb trauma. Past studies have shown that the standard Hybrid III and THOR-LX are not biofidelic in military axial loading conditions (up to 12 m/s). Both of these surrogates over predict axial forces compared to Post Mortem Human Specimens (PMHS) [1]. As a result, a new surrogate was developed, Mil-LX (Military Lower Extremity), that matches the PMHS response for axial loading of the lower leg up to 12 m/s [2,3]. While injury mitigation techniques, such as energy absorbing mats, foot rests, and isolation floors, have been effective in reducing lower extremity injuries in live fire test events, there are several variants of each of these methods. Additionally, it has also been suggested that the positioning of the lower limbs may affect the load sustained by these extremities [4].

scholarly journals Lower Limb Motion Recognition Method Based on Improved Wavelet Packet Transform and Unscented Kalman Neural Network

2020 ◽  
Vol 2020 ◽  
pp. 1-16
Author(s):  
Xin Shi ◽  
Pengjie Qin ◽  
Jiaqing Zhu ◽  
Shuyuan Xu ◽  
Weiren Shi
Keyword(s):  
Neural Network ◽  
Lower Extremity ◽  
Lower Limb ◽  
Wavelet Packet ◽  
Sliding Window ◽  
Recognition Algorithm ◽  
Lower Limbs ◽  
Exoskeleton Robot ◽  
Motion Intention ◽  
Semg Signals

Exoskeleton robot is a typical application to assist the motion of lower limbs. To make the lower extremity exoskeleton more flexible, it is necessary to identify various motion intentions of the lower limbs of the human body. Although more sEMG sensors can be used to identify more lower limb motion intention, with the increase in the number of sensors, more and more data need to be processed. In the process of human motion, the collected sEMG signal is easy to be interfered with noise. To improve the practicality of the lower extremity exoskeleton robot, this paper proposed a wavelet packet transform- (WPT-) based sliding window difference average filtering feature extract algorithm and the unscented Kalman neural network (UKFNN) recognition algorithm. We established an sEMG energy feature model, using a sliding window difference average filtering method to suppress noise interference and extracted stable feature values and using UKF filtering to optimize the neural network weights to improve the adaptability and accuracy of the recognition model. In this paper, we collected the sEMG signals of three muscles to identify six lower limb motion intentions. The average accuracy of 94.83% is proposed in this paper. Experiments show that the algorithm improves the accuracy and anti-interference of motion intention recognition of lower limb sEMG signals. The algorithm is superior to the backpropagation neural network (BPNN) recognition algorithm in the lower limb motion intention recognition and proves the effectiveness, novelty, and reliability of the method in this paper.

P083 Primary Goujerot- Sjögren Syndrome: a pediatric case report

Rheumatology ◽  
2021 ◽  
Vol 60 (Supplement_5) ◽  
Author(s):  
Djohra Hadef ◽  
Samy Slimani ◽  
Yamina Ouchen
Keyword(s):  
Autoimmune Disease ◽  
Clinical Signs ◽  
Lymphocytic Infiltration ◽  
Initial Therapy ◽  
Sjögren Syndrome ◽  
Lower Limbs ◽  
Systemic Autoimmune Disease ◽  
Sjogren Syndrome ◽  
Organ Systems ◽  
One Year

Abstract Background Gourgerot-Sjögren syndrome (GSS) is a systemic autoimmune disease characterized by lymphocytic infiltration of the exocrine glands leading to dryness of the mucous membranes. It may also involve other organs and organ systems. GSS can be primary (pGSS) or secondary due to other autoimmune diseases. pSGS mainly affects women over 40 years old, but can occur at any age. GSS is rare in children and is often secondary to other diseases. We report the case of a 12-year-old girl with primary Gougerot-Sjögren Syndrome Methods and results A 12-year-old girl from Batna (Algeria) presented to her pediatrician in 2016 for a rash with arthralgia. She had no relevant past medical history and is the child of a non-consanguineous marriage. Clinical examination found a well-nourished child with a purpuric rash on her lower limbs. She complained of arthralgia without clinical signs of arthritis. The child also complained of a sensation of a foreign body and burning in both eyes. The eye exam was normal except for a positive Schirmer's test. There were no signs of parotitis. Laboratory tests showed an erythrocyte sedimentation rate (ESR) of 84 mm the first h and a negative C-reactive protein (CRP). She was also Leukopenic. Serological testing resulted in a positive Anti SS-A and Anti SS-B. The abdominal pelvic ultrasound was normal. The patient was diagnosed with primary Gougerot-Sjögren Syndrome. Artificial tears and hydroxychloroquine were started as initial therapy. One year later we added an immunosuppressant (Methotrexate) due to the persistence of clinical signs. Conclusion Our case is particular in that primary Gougerot-Sjögren Syndrome is rare in children. Routine follow- up with this patient is important to determine whether it is indeed pGSS with pediatric onset or GSS secondary to another autoimmune disease.

scholarly journals Analysis/Spectrum of admitted cases of lower extremity arterial disease (LEAD) in University Hospital of Nepal

2021 ◽  
Vol 1 (1) ◽  
pp. 17-22
Author(s):  
Robin Man Karmacharya ◽  
Satish Vaidya ◽  
Amit Kumar Singh ◽  
Prasesh Dhakal ◽  
Sushil Dahal ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Lower Limb ◽  
Color Change ◽  
Peak Systolic Velocity ◽  
Arterial Disease ◽  
Lower Limbs ◽  
Local Temperature ◽  
Peroneal Artery ◽  
Anatomical Location ◽  
Lower Extremity Arterial Disease

Introduction: Peripheral arterial disease is a condition due to partial or complete occlusion of arteries excluding that of heart and brain. Lower extremity arterial disease is specific to lower limbs. Some of the patients are asymptomatic while a majority present with claudication, rest pain, ulceration or even gangrene. Methods: We took all admitted cases of lower extremity arterial disease from January, 2015 to December 2018. ABI was used as the first clinical tool for the diagnosis of PAD in patients with history or physical examination findings suggestive of PAD as per AHA guidelines. Outpatient arterial Doppler ultrasonography complemented by lower limb CT angiogram was used as a confirmatory tool for the diagnosis and also to assess anatomical location and severity of stenosis. Results: Total of 54 cases of lower extremity arterial diseases were identified with a mean age of 59.2 years (S.D. 11.4). Right lower limb was involved in 35(50%). Mean age was 58 years(SD 13.1). Mean duration of symptom was 3.4 years (SD 3.3). Claudication was present in all the patients. 32(45.7%) had ulcers. Toe(44.3%) was most commonly involved. Decreased local temperature(91.4%) and color change(87.1%) were major symptoms. 35(50%) of the patients had gangrene. Mean peak systolic velocity was lowest in the peroneal artery. 16.6% patients got additional peripheral bypass surgery. Conclusion: Claudication, decreased local temperature and color change were very common findings of lower extremity arterial disease. Gangrene was present in half of the patients.

Design of a Human Knee Reeducation Mechanism

2019 ◽  
Vol 11 (1) ◽  
pp. 42-53
Author(s):  
Allaoua Brahmia ◽  
Ridha Kelaiaia
Keyword(s):  
Lower Limb ◽  
Mechanical Design ◽  
Kinematic Chain ◽  
Lower Limbs ◽  
Kinematic Structure ◽  
Robotic Device ◽  
Human Knee ◽  
Kinematic Study ◽  
Rehabilitation Exercise ◽  
New Machine

Abstract To establish an exercise in open muscular chain rehabilitation (OMC), it is necessary to choose the type of kinematic chain of the mechanical / biomechanical system that constitutes the lower limbs in interaction with the robotic device. Indeed, it’s accepted in biomechanics that a rehabilitation exercise in OMC of the lower limb is performed with a fixed hip and a free foot. Based on these findings, a kinematic structure of a new machine, named Reeduc-Knee, is proposed, and a mechanical design is carried out. The contribution of this work is not limited to the mechanical design of the Reeduc-Knee system. Indeed, to define the minimum parameterizing defining the configuration of the device relative to an absolute reference, a geometric and kinematic study is presented.

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