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https://www.readbyqxmd.com/read/28188335/posterior-cruciate-ligament-reconstruction-in-skeletal-immature-children
#1
Ole Gade Sørensen, Peter Faunø, Svend Erik Christiansen, Martin Lind
PURPOSE: Rupture of the posterior cruciate ligament (PCL) is a rare knee injury in children with open growth plates. The follow-up results of six patients with open physes treated with PCL reconstruction are presented. The objective is to evaluate the clinical outcomes of PCL reconstruction for six skeletally immature patients. METHODS: Between 2006 and 2010, six skeletally immature patients were treated with PCL reconstruction. At the time of surgery, the median age was 9 years (range 6-14)...
February 10, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28159052/complex-ankle-arthrodesis-with-step-cut-osteotomy-in-charcot-arthropathy-with-bone-loss
#2
Sean Booth, Moez Ballal, Anand Pillai
We report a case of a complex limb salvage ankle arthrodesis in a patient with Charcot arthropathy. A step-cut osteotomy was performed in order to tackle the issues of anterior tibial bone loss; worsening leg length discrepancy; soft tissue contraction; joint instability and high risk of non-union. The construct formed by the step-cut allowed for the preservation of good bone stock; avoidance of further limb shortening; increased torsional stability and increased surface area for bony union. This resulted in a patient with a stable, plantigrade foot appropriate for footwear...
March 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28157918/influence-of-axial-force-errors-on-the-deformation-of-the-4%C3%A2-%C3%A2-m-lightweight-mirror-and-its-correction
#3
Bin Lan, Xiaoxia Wu, Jianfeng Li, Ming Ming, Xiangyi Liu, Hongbo Yang
The lightweight primary mirror of the four meter Chinese telescope is supported axially by a passive hydraulic system, in parallel with an active system. The figure is sensitive to the errors in the axial forces, which can be effectively corrected using active optics. The squared RMS of this figure approximately follows the χ<sup>2</sup> distribution, as verified by Monte Carlo analysis. The probability distributions of the squared norm of the active-forces vector, of the squared norm of the leg-lengths vector in the hexapod platform, and of the squared RMS of the residual figure are discussed in terms of the bending modes obtained by singular-value decomposition of the influence matrix, the optical sensitivity matrix deduced through ray trace, and the Jacobian matrix of the hexapod platform...
January 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28152452/upper-extremity-motion-during-gait-in-adolescents-with-structural-leg-length-discrepancy-an-exploratory-study
#4
Fabiola Angelico, Marie Freslier, Jacqueline Romkes, Reinald Brunner, Stefan Schmid
BACKGROUND AND PURPOSE: Depending on the extent of a structural leg length discrepancy (LLD), several compensatory mechanisms take place in order to maintain function and to optimize energy consumption during gait. However, studies describing the influence of a structural LLD on upper limb motion are lacking. The current study therefore aimed at the evaluation of upper limb motion during gait in LLD patients compared to healthy controls. METHODS: Motion capture data from 14 patients with structural LLD and 15 healthy controls that were collected during barefoot walking at a self-selected speed were retrospectively analyzed...
January 4, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28144605/limb-lengthening-using-the-precice-tm-nail-system-complications-and-results
#5
Ulrich Wiebking, Emmanouil Liodakis, Mohamed Kenawey, Christian Krettek
BACKGROUND: Three types of telescopic nails are mainly used for intramedullary limb lengthening nowadays. Despite some important advantages of this new technology (e.g. controlled distraction rate, not restricted availability, possibility to perform accordion maneuvers), few articles exist on clinical results and complications after lengthening with the PRECICE(TM) nail (Ellipse, USA). OBJECTIVES: The aim of the current study was to describe and analyze the complications associated with lengthening with the PRECICE(TM) nail...
December 2016: Archives of Trauma Research
https://www.readbyqxmd.com/read/28144414/comparison-of-lateral-abdominal-muscle-thickness-and-cross-sectional-area-of-multifidus-in-adolescent-soccer-players-with-and-without-low-back-pain-a-case-control-study
#6
Pardis Noormohammadpour, Alireza Hosseini Khezri, Paweł Linek, Mohammad Ali Mansournia, Alireza Hassannejad, Ali Younesian, Farzin Farahbakhsh, Ramin Kordi
BACKGROUND: Low back pain (LBP) is a common complaint amongst adolescent athletes. While different studies have shown association between LBP and trunk muscle thickness in the general population, few articles have studied it in adolescent athletes. OBJECTIVES: The aim of this study is to compare lateral abdominal muscle thickness and function, and cross sectional area (CSA) of lumbar multifidus (LM) in adolescent soccer players with and without LBP. METHODS: In total, 28 adolescent soccer players with and without LBP, from the premier league participated in this study...
December 2016: Asian Journal of Sports Medicine
https://www.readbyqxmd.com/read/28133549/a-maximum-muscle-strength-prediction-formula-using-theoretical-grade-3-muscle-strength-value-in-daniels-et-al-s-manual-muscle-test-in-consideration-of-age-an-investigation-of-hip-and-knee-joint-flexion-and-extension
#7
Hideyuki Usa, Masashi Matsumura, Kazuna Ichikawa, Hitoshi Takei
This study attempted to develop a formula for predicting maximum muscle strength value for young, middle-aged, and elderly adults using theoretical Grade 3 muscle strength value (moment fair: Mf )-the static muscular moment to support a limb segment against gravity-from the manual muscle test by Daniels et al. A total of 130 healthy Japanese individuals divided by age group performed isometric muscle contractions at maximum effort for various movements of hip joint flexion and extension and knee joint flexion and extension, and the accompanying resisting force was measured and maximum muscle strength value (moment max, Mm ) was calculated...
2017: Rehabilitation Research and Practice
https://www.readbyqxmd.com/read/28116449/-treatment-of-femoral-shaft-fractures-in-children-and-adolescents-%C3%A2-50%C3%A2-kg-a%C3%A2-retrospective-multicenter-trial
#8
M Rapp, R Kraus, P Illing, D W Sommerfeldt, M M Kaiser
BACKGROUND: Operative treatment of diaphyseal fractures of the femur in older children and adolescents remains controversial due to multiple surgical options and higher complication rates in single-center studies compared to younger children. This retrospective multicenter study aimed to register early and late complications in day-by-day treatment. MATERIAL AND METHODS: Sixteen hospitals with particular expertise in pediatric orthopedic trauma participated in this study...
January 23, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28097109/accuracy-and-reliability-of-preoperative-on-screen-templating-using-digital-radiographs-for-total-hip-arthroplasty
#9
Jong Ki Shin, Seung Min Son, Tae Woo Kim, Won Chul Shin, Jung Sub Lee, Kuen Tak Suh
PURPOSE: Preoperative on-screen templating is a method of using acetate templates on digital images. The aim of the present study was to evaluate the accuracy, intra- and interobserver reliabilities of preoperative on-screen templating using digital radiographs for total hip arthroplasty (THA). MATERIALS AND METHODS: Two hundred patients with hip disease who were treated with primary cementless THA were retrospectively evaluated. The accuracy of on-screen templating was assessed by comparing the predicted prosthesis sizes with the actual sizes used operatively...
December 2016: Hip & Pelvis
https://www.readbyqxmd.com/read/28093251/malalignment-after-minimally-invasive-plate-osteosynthesis-in-distal-femoral-fractures
#10
Joon-Woo Kim, Chang-Wug Oh, Jong-Keon Oh, Il-Hyung Park, Hee-Soo Kyung, Kyeong-Hyeon Park, Seong-Dae Yoon, Seong-Min Kim
INTRODUCTION: Although minimally invasive plate osteosynthesis (MIPO) is a preferred operative treatment for fractures of the distal femur, malalignment is a significant concern because of indirect reduction of the fracture. The purpose of this study, therefore, was to evaluate radiologic alignment after MIPO for distal femoral fractures. PATIENTS AND METHODS: Of the 138 patients with fracture of the distal femur who underwent MIPO, we enrolled 51 patients in whom bilateral rotational alignment could be assessed by postoperative computed tomography (CT)...
January 10, 2017: Injury
https://www.readbyqxmd.com/read/28075436/gait-kinematic-deviations-in-patients-with-developmental-dysplasia-of-the-hip-treated-with-total-hip-arthroplasty
#11
Yong Nie, Ning Ning, Fuxing Pei, Bin Shen, Zongke Zhou, Zongming Li
Comprehensive gait analysis of patients with Crowe type II and III developmental dysplasia of the hip (DDH) after successful total hip arthroplasty (THA) is lacking in the literature. This study evaluated gait function in joint kinematics after unilateral and bilateral THA in patients with DDH. In addition, the effect of high cup position on gait function was investigated. A total of 16 unilateral and 15 bilateral cementless THA patients due to DDH and 10 healthy participants comprised the study population...
January 11, 2017: Orthopedics
https://www.readbyqxmd.com/read/28068825/microdose-acquisition-in-adolescent-leg-length-discrepancy-using-a-low-dose-biplane-imaging-system
#12
Janni Jensen, Bo R Mussmann, John Hjarbæk, Zaid Al-Aubaidi, Niels W Pedersen, Oke Gerke, Trine Torfing
Background Children with leg length discrepancy often undergo repeat imaging. Therefore, every effort to reduce radiation dose is important. Using low dose preview images and noise reduction software rather than diagnostic images for length measurements might contribute to reducing dose. Purpose To compare leg length measurements performed on diagnostic images and low dose preview images both acquired using a low-dose bi-planar imaging system. Material and Methods Preview and diagnostic images from 22 patients were retrospectively collected (14 girls, 8 boys; mean age, 12...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28068823/leg-lengthening-and-femoral-offset-reduction-after-total-hip-arthroplasty-where-is-the-problem-stem-or-cup-positioning
#13
Bariq Al-Amiry, Sarwar Mahmood, Ferid Krupic, Arkan Sayed-Noor
Background Restoration of femoral offset (FO) and leg length is an important goal in total hip arthroplasty (THA) as it improves functional outcome. Purpose To analyze whether the problem of postoperative leg lengthening and FO reduction is related to the femoral stem or acetabular cup positioning or both. Material and Methods Between September 2010 and April 2013, 172 patients with unilateral primary osteoarthritis treated with THA were included. Postoperative leg-length discrepancy (LLD) and global FO (summation of cup and FO) were measured by two observers using a standardized protocol for evaluation of antero-posterior plain hip radiographs...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28068308/the-association-between-weight-height-and-head-circumference-reconsidered
#14
Christiane Scheffler, Holle Greil, Michael Hermanussen
BACKGROUND: Under normal nutritional and health conditions, body height, weight and head circumference are significantly related. We hypothesize that the apparent general association between weight, height and head circumference of the growing child might be misleading. METHODS: We re-analyzed data of 7444 boys and 7375 girls measured in East-Germany between 1986 and 1990, aged from 0 to 7 years with measurements of body length/height, leg length, sitting height, biacromial shoulder breadth, thoracic breadth, thoracic depth, thoracic circumference, body weight, head volume, percentage of body fat, and hip skinfold vertical, using principal component analysis...
January 9, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28057133/-association-between-age-at-menarche-and-height-and-leg-length-in-adult-women-findings-from-survey-in-10-areas-in-china
#15
L L Lin, B Zheng, J Lyu, Y Guo, Z Bian, C Q Yu, L Yang, H Y Zhou, Y L Tan, P Pei, J S Chen, Z M Chen, L M Li
Objective: To describe the regional differences and secular trend in age at menarche, height and leg length in adult women aged 30-79 years in 10 areas included in China Kadoorie Biobank study (CKB), and evaluate the association between age at menarche and height and leg length in adult women in China. Methods: A total of 285 187 women, who had data on age at menarche and who had their menarche at the age between 9-18 years, were included in the analysis. Multiple linear regression models were used to assess the association between age at menarche and height and leg length...
November 10, 2016: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28052429/head-circumference-leg-length-and-its-association-with-dementia-among-older-adult-population-in-singapore
#16
Sherilyn Chang, Hui Lin Ong, Edimansyah Abdin, Janhavi Ajit Vaingankar, Anitha Jeyagurunathan, Saleha Shafie, Rathi Mahendran, Mythily Subramaniam, Siow Ann Chong
BACKGROUND: Head circumference and leg length serve as reliable proxy indicators of early-life environment. Research studies have shown that these anthropometric measurements are associated with cognitive impairment and dementia among older adults. The aim of the present study was to assess the associations between dementia with head circumference and leg length among the older adult population in Singapore. This study also aimed to examine the sociodemographic correlates of these anthropometric measurements...
January 4, 2017: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28040088/restoration-of-long-bone-defects-treated-with-the-induced-membrane-technique-protocol-and-outcomes
#17
Peter V Giannoudis, Paul J Harwood, Theodoros Tosounidis, Nikolaos K Kanakaris
This prospective study was undertaken at a regional tertiary referral centre to evaluate the results of treatment of bone defects managed with the induced membrane (IM) technique. Inclusion criteria were patients with bone defects secondary to septic non-union, chronic osteomyelitis and acute fracture with bone loss. Pathological fractures with bone loss were excluded. Data collection included patient demographics, pathology, previous surgical intervention, size of bone defect, type of graft implanted, time-to-union and complications/reinterventions...
December 2016: Injury
https://www.readbyqxmd.com/read/28036322/effects-of-femoral-rotational-taping-on-dynamic-postural-stability-in-female-patients-with-patellofemoral-pain
#18
Chen-Yi Song, Jiu-Jenq Lin, Alison H Chang
OBJECTIVE: To investigate the effects of femoral rotational taping on task performance, dynamic postural control, and pain during the Star Excursion Balance Test (SEBT) in patients with patellofemoral pain (PFP) compared to healthy controls. DESIGN: Case-control study, pretest-posttest. SETTING: Laboratory. PARTICIPANTS: Twenty-four female participants (16 with PFP, 8 controls). INTERVENTIONS: Participants in both the PFP and control groups performed SEBT with no taping, sham taping, and femoral rotational taping...
October 10, 2016: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28031512/z-plasty-for-severe-gluteal-muscle-contracture-in-children
#19
Kun Zha, GuoHui Liu, Shuhua Yang, Faqi Cao
PURPOSE: To review the records of 363 patients with severe gluteal muscle contracture to determine its mechanism, underlying pathology, and treatment outcome. METHODS: Records of 136 males and 227 females aged 5 to 18 (mean, 12.2) years who underwent Z-plasty for bilateral (n=347) or unilateral (n=16) severe gluteal muscle contracture were reviewed. Severe gluteal muscle contracture was classified as typical (n=52) or special (n=311). The typical type is associated with symptoms of positive out-toe gait, Ober sign, back-extending test, cross-leg test, squatting with knee side-by-side test, and hip dysfunction...
2016: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28031496/arthroscopic-transphyseal-anterior-cruciate-ligament-reconstruction-in-adolescent-athletes
#20
Luca Dei Giudici, Roberto Fabbrini, Luca Garro, Serena Arima, Antonio Gigante, Agostino Tucciarone
PURPOSE: To evaluate the 5-year outcome of arthroscopic transphyseal anterior cruciate ligament (ACL) reconstruction in 19 adolescent athletes. METHODS: 14 male and 5 female adolescent athletes aged 12 to 16 (mean, 13.9) years with Tanner stage 2 or 3 open physes underwent arthroscopic transphyseal ACL reconstruction by a single surgeon and were followed up for 5 years. Patients were evaluated using the numerical rating score (NRS) for pain, knee osteoarthritis outcome score (KOOS), International Knee Documentation Committee (IKDC) score, Tegner Activity Scale, and Lysholm Score, as well as the leg length discrepancy, femorotibial alignment, varus or valgus deformities, active and passive knee range of motion...
December 2016: Journal of Orthopaedic Surgery
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