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https://www.readbyqxmd.com/read/29027186/novel-technique-for-intraoperative-sciatic-nerve-assessment-in-complex-primary-total-hip-arthroplasty-a-pilot-study
#1
Shai S Shemesh, Jonathan Robinson, Samuel Overley, Michael J Bronson, Calin S Moucha, Darwin Chen
INTRODUCTION: Sciatic nerve injury (SNI) is a potentially devastating complication after total hip arthroplasty (THA). Intraoperative neural monitoring has been found in several studies to be useful in preventing SNI, but can be difficult to implement. In this study, we examine the results of using a handheld nerve stimulator for intraoperative sciatic nerve (SN) monitoring during complex THA requiring limb lengthening and/or significant manipulation of the SN. METHODS: A consecutive series of 11 cases (9 patients, 11 hips) with either severe developmental dysplasia of the hip (Crowe 3-4) or other underlying conditions requiring complex hip reconstruction involving significant leg lengthening and/or nerve manipulation...
October 9, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28967055/clinical-and-functional-outcomes-after-augmented-hip-abductor-tendon-repair
#2
Jay R Ebert, Thomas A Bucher, Conor J Mullan, Gregory C Janes
INTRODUCTION: Hip abductor tendon (HAT) tearing is commonly implicated in greater trochanteric pain syndrome. Surgical studies are often reported in small cohorts and with limited information on functional improvement. This study reports the clinical and functional outcomes after HAT repair. METHODS: 112 patients with symptomatic HAT tears, diagnosed via magnetic resonance imaging, underwent open bursectomy, V-Y lengthening of the iliotibial band, debridement of the diseased tendon, decortication of the trochanteric foot-plate and reattachment of the tendon with suture anchors, augmented with a LARS ligament through a trans-osseous tunnel...
September 21, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28965313/significant-liver-related-morbidity-after-bariatric-surgery-and-its-reversal-a-case-series
#3
Magdalena Eilenberg, Felix B Langer, Andrea Beer, Michael Trauner, Gerhard Prager, Katharina Staufer
BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) occurs in up to 80% of patients with obesity. Current data suggest an improvement of NAFLD after established bariatric procedures. OBJECTIVES: This study investigated liver function impairment after Roux-en-Y gastric bypass (RYGB) and one-anastomosis gastric bypass (OAGB). SETTING: University Hospital, Bariatric Surgery Unit METHODS: In this single-center case series, consecutive in- and outpatients after bariatric surgery who presented with severe liver dysfunction from March 2014 to February 2017 were included and followed until March 2017...
September 30, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28965167/laparoscopic-reversal-of-the-biliopancreatic-diversion-with-duodenal-switch-a-step-by-step-video-case
#4
Hamzeh M Halawani, Gintaras Antanavicius
BACKGROUND: Despite the success of the Biliopancreatic Diversion with Duodenal Switch procedure (BPD-DS) in weight loss and comorbidities resolution, reversal of BPD-DS is necessary in 0.2-0.6% of BPD-DS cases for vitamin, protein, and other micronutrient deficiencies. Different techniques are available to reverse the malabsorptive component of the BPD-DS. METHODS: A retrospective chart review for a 37-year-old female patient who presented with lower leg edema and signs of malnutrition 5 years after a BPD/DS...
September 30, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28945740/force-encoding-in-muscle-spindles-during-stretch-of-passive-muscle
#5
Kyle P Blum, Boris Lamotte D'Incamps, Daniel Zytnicki, Lena H Ting
Muscle spindle proprioceptive receptors play a primary role in encoding the effects of external mechanical perturbations to the body. During externally-imposed stretches of passive, i.e. electrically-quiescent, muscles, the instantaneous firing rates (IFRs) of muscle spindles are associated with characteristics of stretch such as length and velocity. However, even in passive muscle, there are history-dependent transients of muscle spindle firing that are not uniquely related to muscle length and velocity, nor reproduced by current muscle spindle models...
September 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28938286/optimizing-bone-defect-reconstruction-balanced-cable-transport-with-circular-external-fixation
#6
Stephen Matthew Quinnan, Charles Lawrie
Distraction osteogenesis has proven effective in the management of tibial bone loss from severe trauma and infection. Unfortunately, pain and scarring from wires and half pins dragging through the skin and the required prolonged time in the external fixator make treatment difficult. Cable bone transport has been shown to improve cosmesis and decrease pain during transport. However, the published methods have limitations in that they have poor control of transport segment alignment, do not allow for lengthening of the limb, and do not permit weight bearing during the treatment process...
October 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28894789/impact-of-the-mk-vi-skinsuit-on-skin-microbiota-of-terrestrial-volunteers-and-an-international-space-station-bound-astronaut
#7
Richard A Stabler, Helena Rosado, Ronan Doyle, David Negus, Philip A Carvil, Juan G Kristjánsson, David A Green, Rafael Franco-Cendejas, Cadi Davies, Andreas Mogensen, Jonathan Scott, Peter W Taylor
Microgravity induces physiological deconditioning due to the absence of gravity loading, resulting in bone mineral density loss, atrophy of lower limb skeletal and postural muscles, and lengthening of the spine. SkinSuit is a lightweight compression suit designed to provide head-to-foot (axial) loading to counteract spinal elongation during spaceflight. As synthetic garments may impact negatively on the skin microbiome, we used 16S ribosomal RNA (rRNA) gene amplicon procedures to define bacterial skin communities at sebaceous and moist body sites of five healthy male volunteers undergoing SkinSuit evaluation...
2017: NPJ Microgravity
https://www.readbyqxmd.com/read/28893094/retrograde-magnetic-internal-lengthening-nail-for-acute-femoral-deformity-correction-and-limb-lengthening
#8
Austin T Fragomen, S Robert Rozbruch
The Precice magnetic internal lengthening intramedullary nail is being used with great success in femur lengthening and deformity correction with a retrograde approach. Areas Covered: Our personal history of limb lengthening and the Precice nail will be reviewed. Several technical aspects are discussed including design updates, pre operative planning, selection of nail length, the use of blocking screws and intra operative temporary external fixation, osteotomy practice, post operative management, and cost analysis...
September 17, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28884841/sclerostin-antibody-enhances-bone-formation-in-a-rat-model-of-distraction-osteogenesis
#9
Michelle M McDonald, Alyson Morse, Oliver Birke, Nicole Yc Yu, Kathy Mikulec, Lauren Peacock, Aaron Schindeler, Min Liu, Hua Zhu Ke, David G Little
Neutralizing monoclonal sclerostin antibodies are effective in promoting bone formation at a systemic level and in orthopedic scenarios including closed fracture repair. In this study we examined the effects of sclerostin antibody (Scl-Ab) treatment on regenerate volume, density and strength in a rat model of distraction osteogenesis. Surgical osteotomy was performed on 179 Sprague Dawley rats. After 1 week, rats underwent distraction for 2 weeks, followed by 6 weeks for consolidation. Two treatment groups received biweekly subcutaneous Scl-AbIII (a rodent form of Scl-Ab; 25 mg/kg), either from the start of distraction onwards or restricted to the consolidation phase...
September 8, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28875130/ipsilateral-femur-and-tibia-fractures-in-pediatric-patients-a-systematic-review
#10
Jason B Anari, Alexander L Neuwirth, B David Horn, Keith D Baldwin
AIM: To better understand how pediatric floating knee injuries are managed after the wide spread use of new orthopaedic technology. METHODS: We searched EMBASE, COCHRANE and MEDLINE computerized literature databases from the earliest date available in the databases to February 2017 using the following search term including variants and pleural counterparts: Pediatric floating knee. All studies were thoroughly reviewed by multiple authors. Reference lists from all articles were scrutinized to identify any additional studies of interest...
August 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28870190/monobloc-implants-in-cementless-total-hip-arthroplasty-in-patients-with-legg-calve-perthes-disease-a-long-term-follow-up
#11
Ze-Yu Luo, Hao-Yang Wang, Duan Wang, Hui Pan, Fu-Xing Pei, Zong-Ke Zhou
BACKGROUND: The purpose of this study was to evaluate 10-year outcomes in cementless monobloc total hip arthroplasty (THA) in a group of hips with Legg-Calve-Perthes disease (LCPD). METHODS: We reviewed 71 patients (88 hips) who underwent cementless THA with a diagnosis of LCPD from 2003 to 2009. From the total of 71 patients, 34 men and 37 women with an average age of 49.94 years were included. The mean follow-up period was 10 years. RESULTS: The mean Harris Hip Score improved significantly from 46...
September 5, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28870053/-domestic-external-fixator-application-in-the-treatment-of-limb-deformities-7-289-cases-application-report
#12
S H Qin, B F Guo, X J Zheng, S F Jiao, H T Xia, A M Peng, Q Pan, J C Zang, Z J Wang
Objective: To discuss the clinical application and effects of domestic external fixator in the treatment of patients with malformations of limbs. Methods: A total of 7 289 patients with malformation of limbs who had been operated in Qin Sihe orthopedic surgery team from January 1989 to June 2016 were retrospective analyzed. The patients were treated with domestic external fixator, including 4 033 males and 3 256 females, aging from 2 to 82 years with a mean age of 23.4 years. There were 2 732 patients using Ilizarov external fixator, 4 713 patients using hybrid external fixator, 57 patients using monobrachial external fixator, 232 patients using Ilizarov external fixator and hybrid external fixator...
September 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28869634/the-effects-of-an-early-intrahospital-rehabilitation-on-weight-bearing-during-lower-extremity-lengthening-with-ilizarov-method
#13
Grzegorz Konieczny, Piotr Morasiewicz, Natalia Kuciel
PURPOSE: Exerting axial pressure on the affected lower limb remains one of the most crucial elements of Ilizarov method. The objective was to determine the effects of an early intrahospital rehabilitation on weight bearing during lower extremity lengthening with Ilizarov method. METHODS: The study included 15 patients who underwent lower limb lengthening. The patients were tested on the third day after surgery using the pedobarographic platform. The tests were performed four times in the standing position: twice with the support of forearm crutches and twice without crutches...
2017: Acta of Bioengineering and Biomechanics
https://www.readbyqxmd.com/read/28827057/ilizarov-hip-reconstruction-osteotomy-a-review
#14
Masood Umer, Talal Aqueel Quadri, Rizwan Haroon Rashid
Hip joint instability can be secondary to congenital hip pathologies like developmental dysplasia (DDH) or acquired such as sequel of infective or neoplastic process. An unstable hip is usually associated with loss of bone from the proximal femur, shortening, abnormal gait, and pain. Many authors have suggested proximal femoral valgus osteotomy for the treatment of unstable hip joints. Ilizarov modified this technique and performed a double-level osteotomy. In addition to proximal femoral valgus extension osteotomy, he introduced a distal femoral varus osteotomy which would lead to limb lengthening and correction of mechanical axis of the leg...
August 18, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28819598/two-staged-bilateral-femoral-alignment-osteotomy-with-concomitant-total-knee-arthroplasty-in-an-achondroplasia-patient-a-case-report
#15
Sebastian G Walter, Tobias Schwering, Stefan Preiss
INTRODUCTION: Achondroplasia is the most common form of dwarfism in humans and is orthopedically characterized by shortened extremities and an exaggerated lumbar lordosis. The surgical challenges are maintenance of axial alignment during limb lengthening as well as joint preservation and alignment restoration. CASE REPORT: We present a 46-year-old female suffering from achondroplasia with severe pain in both knees. Severe varus deformities of both femurs and degeneration of both knee joints became apparent on clinical and radiological examination...
March 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28817981/the-use-of-flexible-intramedullary-nails-in-limb-lengthening
#16
Arnold Popkov, Patrick Foster, Alexander Gubin, Dmitry Borzunov, Dmitry Popkov
Lower and upper limb length discrepancy and deformity, congenital or acquired, are amongst the most common conditions in children for orthopaedic referral. Over the last twenty years, surgical techniques have evolved in an attempt to decrease Healing Index and minimise these complications. Areas covered: The flexible intramedullary nailing (FIN) is a minimally invasive intramedullary osteosynthesis. In combination with an external fixator, it is appropriated for pediatric bone lengthenings and lengthening of bones of small diameter in adults...
August 18, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28817162/determining-when-it-is-safe-to-remove-the-external-fixator-results-from-a-survey-of-the-limb-lengthening-and-reconstruction-society
#17
Christopher A Iobst, Waleed Mohammed, Ryan Colley
Thousands of external fixators are applied for distraction osteogenesis each year. Determining when it is safe to remove the fixator can be difficult. The purpose of this study was to survey an international group of external fixation surgeons to determine their current practice patterns surrounding external fixator removal. A 10-question, open-ended survey was emailed to members of the Limb Lengthening and Reconstruction Society. Responses were recorded, and statistical analysis was performed. Pearson's chi-square test and likelihood ratio were used when indicated...
September 1, 2017: Orthopedics
https://www.readbyqxmd.com/read/28816903/what-s-new-in-limb-lengthening-and-deformity-correction
#18
Reggie C Hamdy, Mitchell Bernstein, Austin T Fragomen, S Robert Rozbruch
No abstract text is available yet for this article.
August 16, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28806980/factors-influencing-outcomes-after-medial-hamstring-lengthening-with-semitendinosus-transfer-in-patients-with-cerebral-palsy
#19
Ki Hyuk Sung, Jaebong Lee, Chin Youb Chung, Kyoung Min Lee, Byung Chae Cho, Seung Jun Moon, Jaeyoung Kim, Moon Seok Park
BACKGROUND: Although several studies have investigated the outcomes after distal hamstring lengthening (DHL), no study has undertaken an approach that included all or most of the important factors that could influence the results. This study was performed to evaluate the outcomes after DHL and analyze the factors that influence the improvement and serial change in knee motion after surgery in patients with cerebral palsy (CP), using a linear mixed model (LMM). METHODS: The study included 314 ambulatory CP patients (594 limbs) with spsastic diplegia who were followed up after undergoing DHL as part of a single-event multilevel surgery and who underwent preoperative and postoperative 3-dimensional (3D) gait analyses...
August 14, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28803367/the-role-of-agonist-and-antagonist-muscles-in-explaining-isometric-knee-extension-torque-variation-with-hip-joint-angle
#20
Theodoros M Bampouras, Neil D Reeves, Vasilios Baltzopoulos, Constantinos N Maganaris
PURPOSE: The biarticular rectus femoris (RF), operating on the ascending limb of the force-length curve, produces more force at longer lengths. However, experimental studies consistently report higher knee extension torque when supine (longer RF length) compared to seated (shorter RF length). Incomplete activation in the supine position has been proposed as the reason for this discrepancy, but differences in antagonistic co-activation could also be responsible due to altered hamstrings length...
August 12, 2017: European Journal of Applied Physiology
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