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https://www.readbyqxmd.com/read/29675441/acute-bilateral-lower-extremity-paralysis-secondary-to-acute-thrombosis-of-an-infrarenal-abdominal-aortic-aneurysm
#1
T Joseph Watson, W Kurtis Childers, Lindsey Haga, John Calaitges
We present the case of a 64-year-old male who presented to the emergency department with bilateral limb ischemia and paralysis for approximately 1 hour. Computed tomographic angiography demonstrated occlusion of the infrarenal aorta beginning just above the patient's known abdominal aortic aneurysm (AAA) and extending into both common iliac arteries. He was emergently treated via open repair of the AAA with a Gore-Tex tube graft, bilateral common iliac thrombectomies, and bilateral lower extremity four-compartment fasciotomies...
June 2017: Aorta (Stamford, Conn.)
https://www.readbyqxmd.com/read/29673344/the-risk-of-violating-the-posterior-malleolar-fracture-when-nailing-the-ipsilateral-concomitant-spiral-distal-tibial-fracture
#2
Yu Zhang, Xiaodong Qin, Lijun Song, Xiang Li
BACKGROUND: For a distal tibial spiral fracture combined with a non-displaced posterior malleolar fragment (PMF), we proposed a hypothesis that the treating surgeon could assess the size of the PMF to determine the need for stabilizing that structure first before rodding the tibia. MATERIALS AND METHODS: Fifty 3-D models (22 females) of combined distal tibial and posterior malleolar fractures from one trauma center were reconstructed. In each case, a virtual tibial intramedullary nail (vIM nail) with three distal anteroposterior (AP) locking screws (S13 , S15 and S37 , the number indicating the distance from the screw to the nail tip) were inserted into the center of the tibial canal and ended on top of the distal tibial physeal scar...
April 19, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29669893/-sost-deficiency-leads-to-reduced-mechanical-strains-at-the-tibia-midshaft-in-strain-matched-in-vivo-loading-experiments-in-mice
#3
Laia Albiol, Myriam Cilla, David Pflanz, Ina Kramer, Michaela Kneissel, Georg N Duda, Bettina M Willie, Sara Checa
Sclerostin, a product of the Sost gene, is a Wnt-inhibitor and thus negatively regulates bone accrual. Canonical Wnt/β-catenin signalling is also known to be activated in mechanotransduction. Sclerostin neutralizing antibodies are being tested in ongoing clinical trials to target osteoporosis and osteogenesis imperfecta but their interaction with mechanical stimuli on bone formation remains unclear. Sost knockout (KO) mice were examined to gain insight into how long-term Sost deficiency alters the local mechanical environment within the bone...
April 2018: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/29667926/proximal-tibia-stress-fracture-with-osteoarthritis-of-knee-radiological-and-functional-analysis-of-one-stage-tka-with-long-stem
#4
Dhanasekaran Soundarrajan, Natesan Rajkumar, Palanisamy Dhanasekararaja, Shanmuganathan Rajasekaran
INTRODUCTION: Proximal tibia stress fractures with knee osteoarthritis pose a challenging situation. We evaluated the radiological and functional outcome of one-stage total knee arthroplasty (TKA) and long stem for patients with varied grades of knee arthritis and proximal tibia stress fractures.  Methods: We analysed 20 patients from April 2012 to March 2017 with proximal tibia stress fractures associated with knee osteoarthritis of varied grades. Out of 20 patients, five were acute fresh fractures...
2018: SICOT-J
https://www.readbyqxmd.com/read/29667733/longitudinal-analysis-of-tibiofemoral-cartilage-contact-area-and-position-in-acl-reconstructed-patients
#5
Ellison Chen, Keiko Amano, Valentina Pedoia, Richard B Souza, C Benjamin Ma, Xiaojuan Li
Patients who have suffered ACL injury are more likely to develop early onset post-traumatic osteoarthritis despite reconstruction. The purpose of our study was to evaluate the longitudinal changes in the tibiofemoral cartilage contact area size and location after ACL injury and reconstruction. Thirty-one patients with isolated unilateral ACL injury were followed with T2 weighted Fast Spin Echo, T1ρ and T2 MRI at baseline prior to reconstruction, and 6 months, 1 year, and 2 years after surgery. Areas were delineated in FSE images with an in-house Matlab program using a spline-based semi-automated segmentation algorithm...
April 18, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29664183/posterior-tibial-perforators-relationship-with-superficial-nerves-and-veins-a-cadaver-study
#6
Antonio Bulla, Alberto Bolletta, Luca Fiorot, Matteo Maffei, Pasquale Bandiera, Vincent Casoli, Andrea Montella, Gian Vittorio Campus
BACKGROUND: Most authors have evaluated the location of lower leg arterial perforators, but little is still known about the relationship between the arterial network and great saphenous vein (GSV) and saphenous nerve (SN). The aim of this study is to evaluate the relationship between the arterial network of the posterior tibial artery perforators, the cutaneous nerves, and the superficial venous system in the lower one third of the leg. METHODS: Eighteen lower limbs from cadavers were used for this study...
April 17, 2018: Microsurgery
https://www.readbyqxmd.com/read/29663495/three-dimensional-mapping-of-the-joint-space-for-the-diagnosis-of-knee-osteoarthritis-based-on-high-resolution-computed-tomography-comparison-with-radiographic-outerbridge-and-meniscal-classifications
#7
Houda Mezlini-Gharsallah, Rabaa Youssef, Stéphanie Uk, Jean Denis Laredo, Christine Chappard
One of the most important characteristic of knee osteoarthritis (OA) is the joint space (JS) width narrowing. Measurements are usually performed on two dimensional (2D) X-rays. We propose and validate a new method to assess the 3D joint space at the medial knee compartment using high resolution peripheral computed tomography images. A semi-automated method was developed to obtain a distance 3D map between femur an tibia with the following parameters: volume, minimum, maximum, mean, standard deviation, median, asymmetry and entropy...
April 16, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29663091/anatomical-feasibility-study-of-flexor-hallucis-longus-transfer-in-treatment-of-achilles-tendon-and-posteromedial-portal-of-ankle-arthroscopy
#8
Haijiao Mao, Linger Wang, Wenwei Dong, Zhenxin Liu, Weigang Yin, Dachuan Xu, Keith L Wapner
PURPOSE: The aim of this study was to evaluate the occurrence of anatomical variations of the musculotendinous junction of the flexor hallucis longus (FHL) muscle, the relationship between FHL tendon or muscle and the tibial neurovascular bundle at the level of the posterior ankle joint in human cadavers. METHODS: Seventy embalmed feet from 20 male and 15 female cadavers, the cadavers' mean age was 65.4 (range from 14 to 82) years, were dissected and anatomically classified to observe FHL muscle morphology define the relationship between FHL tendon or muscle and the tibial neurovascular bundle...
April 16, 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29658814/combined-spring-and-deltoid-ligament-repair-in-adult-acquired-flatfoot
#9
Caio Nery, André Vitor Kerber C Lemos, Fernando Raduan, Nacime Salomão B Mansur, Daniel Baumfeld
BACKGROUND: Adult-acquired flatfoot deformity (AAFD) is usually due to a combination of mechanical failure of the osteoligamentous complex that maintains the medial longitudinal arch of the foot and attenuation or complete tear of the posterior tibial tendon. Magnetic resonance imaging studies in patients with flatfoot deformities have reported the posterior tibial tendon to be pathologic in up to 100% of patients, the spring ligament in up to 87%, and the deltoid ligament in 33%. Many studies in the literature describe reconstruction of the spring ligament or the deltoid ligament associated with AAFD, but there is no study in which both (spring and deltoid) ligaments are reconstructed at the same time...
April 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29644885/short-to-mid-term-outcomes-following-the-use-of-an-arthroereisis-implant-as-an-adjunct-for-correction-of-flexible-acquired-flatfoot-deformity-in-adults
#10
Kempland C Walley, Gearin Greene, Jesse Hallam, Paul J Juliano, Michael C Aynardi
BACKGROUND: The use of an arthroereisis implant for the treatment of adolescent flatfoot deformity has been described. However, data that address the outcomes of patients treated with an arthroereisis implant in adults are limited. The purpose of this study was to investigate the radiographic and clinical outcomes and complications following the use of a subtalar arthroereisis implant as an adjunct for correction acquired flatfoot deformity secondary to posterior tibial tendon dysfunction...
April 1, 2018: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/29643692/correlation-of-tibial-bone-defect-shape-with-patient-demographics-following-total-knee-revision
#11
Madhav Bole, Matthew Teeter, Brent A Lanting, James L Howard
Background: Bone defects of the proximal tibia following revision total knee arthroplasty (TKA) are challenging to manage, but must be addressed to provide lasting stability. This paper will categorize tibial bone defects into shape groups and correlate resulting groups to patient demographic data. Methods: Retrospective analysis of four hundred and four patients post revision TKA between January 2005 and February 2014 was conducted. One hundred and eighteen met the inclusion criteria and were subcategorized by defect shape on their post-operative lateral and anterior-posterior (AP) radiographs...
June 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29627577/role-of-neopterin-as-a-biochemical-marker-for-peripheral-neuropathy-in-pediatric-patients-with-type-1-diabetes-relation-to-nerve-conduction-studies
#12
Nancy Samir Elbarbary, Eman Abdel Rahman Ismail, Rana Ahmed El-Hilaly, Fatma Salama Ahmed
BACKGROUND: Neopterin, a marker of inflammation and cellular immune response, is elevated in conditions of T-cell or macrophages activation. Diabetic peripheral neuropathy (DPN) is associated with inflammatory/immune processes and therefore, we hypothesized that neopterin could be used as a marker of neuropathy in type 1 diabetes mellitus (T1DM). AIM: To measure neopterin levels in children and adolescents with T1DM and assess its possible relation to DPN and nerve conduction studies (NCS)...
April 5, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29623524/could-buerger-s-disease-cause-nonarteritic-anterior-ischemic-optic-neuropathy-a-rare-case-report
#13
Anil Korkmaz, Omer Karti, Dilek Top Karti, Bora Yüksel, Mehmet Ozgur Zengin, Tuncay Kusbeci
We present an interesting case with nonarteritic anterior ischemic optic neuropathy (NAION) accompanied by Buerger's disease. A 43-year-old man was referred to our neuro-ophthalmology clinic with a complaint of visual deterioration in the left eye that started 5 days ago. He suffered from Buerger's disease, and he had acute pain in the right lower limb below the knee. His best corrected visual acuity was 10/10 in the right eye and 2/10 in the left eye by Snellen chart. There was a relative afferent pupil defect in the left eye...
April 5, 2018: Neurological Sciences
https://www.readbyqxmd.com/read/29623458/in-vivo-kinematics-of-gait-in-posterior-stabilized-and-bicruciate-stabilized-total-knee-arthroplasties-using-image-matching-techniques
#14
Koji Murakami, Satoshi Hamai, Ken Okazaki, Yifeng Wang, Satoru Ikebe, Hidehiko Higaki, Takeshi Shimoto, Hideki Mizu-Uchi, Yukio Akasaki, Yasuharu Nakashima
PURPOSE: This study aimed to evaluate the effects of two types of total knee arthroplasty (TKA) designs: posterior-stabilized (PS) and bicruciate-stabilized (BCS) on in vivo kinematics during gait. METHODS: Continuous X-ray images of the gait were taken using a flat panel detector for 23 PS and BCS TKAs. We analyzed the tibiofemoral implant flexion angle, anteroposterior (AP) translation, axial rotation, and anterior/posterior cam-post contact using image-matching techniques...
April 5, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29623377/the-increase-in-posterior-tibial-slope-provides-a-positive-biomechanical-effect-in-posterior-stabilized-total-knee-arthroplasty
#15
Kyoung-Tak Kang, Sae Kwang Kwon, Juhyun Son, Oh-Ryong Kwon, Jun-Sang Lee, Yong-Gon Koh
PURPOSE: This study aims to clarify the influence of the posterior tibial slope (PTS) on knee joint biomechanics after posterior-stabilized (PS) total knee arthroplasty (TKA) using a computer simulation. METHODS: A validated TKA computational model was used to evaluate and quantify the effects of an increased PTS. In order to conduct a squat simulation, models with a - 3° to 15° PTS using increments of 3° were developed. Forces on the quadriceps and collateral ligament, a tibial posterior translation, contact point on a polyethylene (PE) insert, and contact stress on the patellofemoral (PF) joint and post in a PE insert were compared...
April 5, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29618863/-ad-hoc-posterior-tibial-vessels-perforator-propeller-flaps-for-the-reconstruction-of-lower-third-leg-soft-tissue-defects
#16
Thalaivirithan Margabandu Balakrishnan, Jayagosh Ramkumar, Janardhanan Jaganmohan
Introduction: Lower third leg soft tissue defects with anatomical and pathological constraints are posing formidable challenges to reconstructive surgeon. Aim: This retrospective study was conducted to assess the effectiveness of ad hoc posterior tibial vessels perforator-propeller flaps for the reconstruction of small and medium sized soft tissue defects in the lower third leg. Patients and Methods: 22 patients (16 were males and 6 were females) were involved in this study between period of January 2012 and December 2016...
September 2017: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/29615358/outcomes-of-infrageniculate-retrograde-versus-transfemoral-access-for-endovascular-intervention-for-chronic-lower-extremity-ischemia
#17
Ashraf G Taha, Adham N Abou Ali, George Al-Khoury, Michael J Singh, Michel S Makaroun, Efthymios D Avgerinos, Rabih A Chaer
OBJECTIVE: Retrograde infrageniculate access is an alternative treatment strategy for patients who have failed to respond to antegrade endovascular intervention. This study compares the outcomes of infrageniculate retrograde arterial access with the conventional transfemoral access for the endovascular management of chronic lower extremity ischemia. METHODS: This was a retrospective single-center review of retrograde endovascular intervention (REI) from 2012 to 2016...
March 31, 2018: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29614621/three-dimensional-finite-element-analysis-of-the-influence-of-posterior-tibial-slope-on-the-anterior-cruciate-ligament-and-knee-joint-forward-stability
#18
Yong Qi, Hongtao Sun, Yueguang Fan, Feimeng Li, Yunting Wang, Chana Ge
OBJECTIVE: To explore the biomechanical influence of posterior tibial angle on the anterior cruciate ligament and knee joint forward stability. METHODS: The left knee joint of a healthy volunteer was scanned by CT and MRI. The data were imported into Mimics software to obtain 3D models of bone, cartilage, meniscus and ligament structures, and then Geomagic software was used to modify of the image. The relative displacement between tibia and femur and the stress of ACL were recorded...
March 23, 2018: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/29609996/surgical-management-of-stage-2-adult-and-pediatric-acquired-flatfoot-without-tendon-transfer-or-arthrodesis-a-retrospective-study
#19
Ashim Wadehra, Lawrence M Fallat, Robert Jarski
Posterior tibial tendon dysfunction (PTTD) is a common pathology of the foot and ankle. Numerous techniques are available to reconstruct the flatfoot. Fusions and tendon transfers are popular methods; however, a wide range of complications have been associated with these procedures. The objective of the present study was to demonstrate the outcomes of reconstructive surgery for flatfoot correction without tendon transfer or arthrodesis. We performed a retrospective study of 43 patients and 56 feet who had undergone flatfoot reconstructive surgery from November 2011 to June 2016, with a mean follow-up period of 60 weeks (range 12 to 60 months)...
March 30, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29609637/primary-total-knee-arthroplasty-using-constrained-condylar-knee-design-for-severe-deformity-and-stiffness-of-knee-secondary-to-post-traumatic-arthritis
#20
Saroj Rai, Xianzhe Liu, Xiaobo Feng, Bimal Rai, Nira Tamang, Jing Wang, Shunan Ye, Shuhua Yang
BACKGROUND: Key to a successful outcome of total knee arthroplasty (TKA) is to attain optimum alignment, adequate balance, and deformity correction. In primary TKA, this can be achieved efficiently by posterior stabilized (PS) design with or without the sub-periosteal release. However, certain circumstances such as post-traumatic arthritis are often associated with severe deformities with a significant bone defect, stiffness, and instability. Such deformities are extremely difficult to balance with soft tissue release only and require additionally constrained prostheses even in primary TKA...
April 2, 2018: Journal of Orthopaedic Surgery and Research
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