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"Leg Length"

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https://www.readbyqxmd.com/read/29141630/ct-based-analysis-of-muscle-volume-and-degeneration-of-gluteus-medius-in-patients-with-unilateral-hip-osteoarthritis
#1
Takako Momose, Yutaka Inaba, Hyonmin Choe, Naomi Kobayashi, Taro Tezuka, Tomoyuki Saito
BACKGROUND: The gluteus medius (GMED) affects hip function as an abductor. We evaluated muscle volume and degeneration of the GMED by using CT-based analysis and assessed factors that affect hip abductor strength in patients with unilateral hip osteoarthritis (OA). METHODS: We examined clinical and imaging findings associated with hip abductor strength in consecutive 50 patients with unilateral hip OA. Hip abductor muscle strength and Harris hip score (HHS) were assessed...
November 15, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29140160/clinical-measures-and-their-contribution-to-dysfunction-in-individuals-with-patellar-tendinopathy
#2
Hyunjae Jeon, Melanie L McGrath, Neal Grandgenett, Adam B Rosen
CONTEXT: Patellar tendinopathy is prevalent in physically active populations and it affects their quality of living, performance of activity, and may contribute to the early cessation of their athletic careers. A number of previous studies have identified contributing factors for patellar tendinopathy however their contributions to self-reported dysfunction remain unclear. OBJECTIVE: The purpose of this investigation was to determine if strength, flexibility, and various lower extremity static alignments contributed to self-reported function and influence the severity of patellar tendinopathy...
November 15, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29134317/the-impact-of-canal-flare-index-on-leg-length-discrepancy-after-total-hip-arthroplasty
#3
Peter Brumat, Borut Pompe, Vane Antolič, Blaž Mavčič
INTRODUCTION: The femoral stem should protrude from femur by an appropriate vertical distance to allow leg length equalization at hip arthroplasty; this distance depends on the size/shape of medullary canal and implant. The relationship between femoral morphology and achievability of leg length restoration is currently unclear. Our aim was to examine the impact of the femoral canal flare index (CFI) on the risk of leg length discrepancy (LLD) after total hip arthroplasty with different femoral stems...
November 13, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29127262/evidence-for-selection-by-environment-but-not-genotype-by-environment-interactions-for-fitness-related-traits-in-a-wild-mammal-population
#4
Adam Hayward, Josephine M Pemberton, Camillo Berenos, Alastair J Wilson, Jill G Pilkington, Loeske E B Kruuk
How do environmental conditions influence selection and genetic variation in wild populations? There is widespread evidence for selection-by-environment interactions (S*E), but we reviewed studies of natural populations estimating the extent of genotype-by-environment interactions (G*E) in response to natural variation in environmental conditions, and found that evidence for G*E appears to be rare within single populations in the wild. Studies estimating the simultaneous impact of environmental variation on both selection and genetic variation are especially scarce...
November 10, 2017: Genetics
https://www.readbyqxmd.com/read/29126041/the-effect-of-eliminating-leg-length-difference-on-plantar-foot-pressure-distribution-in-patients-wearing-forefoot-offloading-shoe
#5
Ezequiel Palmanovich, Moshe Ayalon, David Ben Sira, Meir Nyska, Iftach Hetsroni
BACKGROUND AND PURPOSE: Elevated heel construction offloads the forefoot after surgery. However, side-to-side height difference alters limb kinetics, whereas leg-length equalizing-sole at non-operated side may have beneficial effects on foot loading. The purpose of this study was to characterize leg-length equalizing sole effect on bilateral plantar pressures when using heel-lift forefoot-offloading shoe. MATERIALS AND METHODS: Twenty men were tested walking. Plantar peak pressures (PP) and pressure-time integrals (PTI) in the forefoot-offloading shoe and in contralateral running shoe were compared between two conditions: one with- and the other without leg-length equalizing sole elevation at the running shoe...
October 24, 2017: Foot
https://www.readbyqxmd.com/read/29125074/-a-soccer-player-with-an-unstable-knee
#6
D Janssen, B Koc, E Jansen
A 19-year-old soccer player presented with instability of his left knee after a rotation trauma. Congenital absence of the anterior cruciate ligament was suspected because of leg length discrepancy and specific MRI findings. He regained stability after an anterior cruciate reconstruction.
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29099471/is-an-operation-always-needed-for-pediatric-triplane-fractures-preliminary-results
#7
Seung Min Ryu, Jae Woo Park, Se Dong Kim, Chul Hyun Park
We compared the outcomes of nonoperative and operative treatments of triplane fractures. Thirty-three patients with triplane fractures were treated conservatively (n=19) or surgically (n=14). Bone union and postoperative complications were radiographically examined. The mean American Orthopedic Foot and Ankle Society scores were 100 (nonoperative group) and 98.1 (operative group) (P=0.304). The modified Weber protocol scores were excellent in both groups. One patient in each group showed a leg-length discrepancy of more than 10 mm at the last follow-up...
November 2, 2017: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/29082791/embedding-the-lateral-end-of-the-lag-screw-within-the-lateral-wall-in-the-repair-of-reverse-obliquity-intertrochanteric-femur-fracture
#8
Ken Hiragami, Jyunji Ishii
Objective The management of reverse oblique intertrochanteric femoral fractures is difficult because such fractures have unique biomechanical characteristics. This study was performed to review the results of treating reverse oblique intertrochanteric femoral fractures with a long cephalomedullary nail by embedding the lateral end of the lag screw to secure axial compression. Methods We herein report the surgical outcomes in seven patients with reverse oblique intertrochanteric fractures treated with our procedure...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/29081149/-effect-of-simulating-leg-length-inequality-on-spinal-and-pelvic-posture-in-the-elderly
#9
H F Zhang, J L Liao, M Ji, S Y Tang, J F Jin, L Chen, L J Wu
Objective: To study the effects of simulating leg length inequality on the spine and pelvic posture in standing and walking states and to explore their compensatory laws. Methods: From January to April, a total of 44 healthy volunteers were rasterstereographically examined for spine and pelvis in Institute of Digitized Medicine, Wenzhou Medical University and Department of Orthopaedics, First Affiliated Hospital of Wenzhou Medical University.Volunteers wore uniform shoes, and single 5 mm thick insoles were customized...
October 24, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29079169/utilizing-dual-mobility-components-for-first-time-revision-total-hip-arthroplasty-for-instability
#10
Jeffrey K Lange, Sara K Spiro, Geoffrey H Westrich
BACKGROUND: Dislocation following total hip arthroplasty (THA) remains a significant clinical problem. Few studies have focused on the use of dual mobility (DM) components in the setting of first-time revision for instability following THA. Here, we investigate patient outcomes following first-time revision THA with DM components for a diagnosis of instability. METHODS: Institution-wide revision THAs using DM components performed between 2010 and 2013 were identified...
September 23, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29058153/effects-of-growth-hormone-treatment-on-adult-height-in-severely-short-children-with-x-linked-hypophosphatemic-rickets
#11
Nadine Meyerhoff, Dieter Haffner, Hagen Staude, Elke Wühl, Michaela Marx, Rolf Beetz, Uwe Querfeld, Martin Holder, Heiko Billing, Wolfgang Rabl, Carmen Schröder, Olaf Hiort, Jürgen H Brämswig, Annette Richter-Unruh, Dirk Schnabel, Miroslav Živičnjak
BACKGROUND: We recently showed that a 3-year growth hormone (GH) treatment improves linear growth in severely short children with X-linked hypophosphatemic rickets (XLH). It is unknown if GH therapy increases adult height in XLH patients. METHODS: We carried out a follow-up analysis of a randomized controlled open-label GH study in short prepubertal children with XLH on phosphate and active vitamin D treatment. The changes in SD scores (SDS) of height, sitting height, leg and arm length, and sitting height index (i...
October 20, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/29053501/the-community-orthopaedic-surgeon-taking-trauma-call-pediatric-tibia-fracture-pearls-and-pitfalls
#12
Steven A Lovejoy, Charles T Mehlman
Tibial fractures in children present a wide array of challenges to the managing orthopaedic surgeon. Injuries cover a spectrum from subtle tibial spine fractures to comminuted high-energy shaft fractures requiring free flap coverage. Significant risks range from malunion and leg length discrepancy to infected nonunions and Volkmann ischemic contracture. This article offers evidence and experience-based advice that is aimed at helping the community orthopaedic surgeon taking call.
November 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/29052010/open-versus-closed-treatment-of-distal-tibia-physeal-fractures-a-systematic-review-and-meta-analysis
#13
Waleed A Asad, Manaf H S Younis, Abdulaziz F Ahmed, Talal Ibrahim
AIMS: Distal tibia physeal fractures can lead to growth complications such as premature physeal closure (PPC), angular deformity and leg length discrepancy. The aim of our study was to systematically review the literature to assess whether open reduction and internal fixation (ORIF) is associated with lower rates of PPC compared to closed treatment. MATERIALS AND METHODS: We searched several databases from 1966 to 2016 for studies that evaluated ORIF versus closed treatment of distal tibia physeal fractures...
October 19, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29051906/intra-articular-physeal-fractures-of-the-distal-femur-a-frequently-missed-diagnosis-in-adolescent-athletes
#14
Andrew T Pennock, Henry B Ellis, Samuel C Willimon, Charles Wyatt, Samuel E Broida, M Morgan Dennis, Tracey Bastrom
BACKGROUND: Intra-articular physeal fractures of the distal femur are an uncommon injury pattern, with only a few small case series reported in the literature. PURPOSE: To pool patients from 3 high-volume pediatric centers to better understand this injury pattern, to determine outcomes of surgical treatment, and to assess risk factors for complications. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: A multicenter retrospective review of all patients presenting with an intra-articular physeal fracture between 2006 and 2016 was performed...
October 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29050822/a-comparison-and-update-of-direct-kinematic-kinetic-models-of-leg-stiffness-in-human-running
#15
Bernard X W Liew, Susan Morris, Ashleigh Masters, Kevin Netto
Direct kinematic-kinetic modelling currently represents the "Gold-standard" in leg stiffness quantification during three-dimensional (3D) motion capture experiments. However, the medial-lateral components of ground reaction force and leg length have been neglected in current leg stiffness formulations. It is unknown if accounting for all 3D would alter healthy biologic estimates of leg stiffness, compared to present direct modelling methods. This study compared running leg stiffness derived from a new method (multiplanar method) which includes all three Cartesian axes, against current methods which either only include the vertical axis (line method) or only the plane of progression (uniplanar method)...
October 6, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29049196/three-dimensional-reduction-and-finite-element-analysis-improves-the-treatment-of-pelvic-malunion-reconstructive-surgery-a-case-report
#16
Sascha Kurz, Philipp Pieroh, Maximilian Lenk, Christoph Josten, Jörg Böhme
RATIONALE: Pelvic malunion is a rare complication and is technically challenging to correct owing to the complex three-dimensional (3D) geometry of the pelvic girdle. Hence, precise preoperative planning is required to ensure appropriate correction. Reconstructive surgery is generally a 2- or 3-stage procedure, with transiliac osteotomy serving as an alternative to address limb length discrepancy. PATIENT CONCERNS: A 38-year-old female patient with a Mears type IV pelvic malunion with previous failed reconstructive surgery was admitted to our department due to progressive immobilization, increasing pain especially at the posterior pelvic arch and a leg length discrepancy...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29048693/risk-factors-for-conversion-surgery-to-total-hip-arthroplasty-of-a-hemiarthroplasty-performed-for-a-femoral-neck-fracture
#17
Matthew J Grosso, Jonathan R Danoff, Ryan Thacher, Taylor S Murtaugh, Thomas R Hickernell, Roshan P Shah, William Macaulay
INTRODUCTION: The purpose of this study was to determine risk factors for conversion to total hip arthroplasty (THA) in patients originally treated with hemiarthroplasty (HA) for displaced femoral neck fractures. METHODS: In this case-controlled study, we identified 54 patients who were treated with HA for femoral neck fracture (FNF) who subsequently underwent conversion to THA at our institution between 2003 and 2013. We randomly selected 142 control patients who underwent HA for a displaced FNF without conversion surgery during the same time period...
October 16, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29045317/the-relationships-between-height-arm-length-and-leg-length-on-the-mechanics-of-the-conventional-and-high-handle-hexagonal-bar-deadlift
#18
Robert G Lockie, Matthew R Moreno, Ashley J Orjalo, Adrina Lazar, Tricia M Liu, Alyssa A Stage, Samantha A Birmingham-Babauta, John J Stokes, Dominic V Giuliano, Fabrice G Risso, DeShaun L Davis, Samuel J Callaghan
The study investigated relationships between arm (AL) and leg length (LL) and conventional deadlift (CD) and high-handle hexagonal bar deadlift (HHBD) mechanics. Twenty-three resistance-trained subjects (14 males, 9 females) completed a one-repetition maximum (1RM) CD and HHBD. A linear position transducer was used to measure: lift distance and duration; peak and mean power, velocity, and force; time to peak power and velocity; and work. Right AL and LL were measured, and AL-to-LL ratio (AL:LL) was also calculated...
October 16, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29040235/acetabular-fractures-in-children-and-adolescents-comparison-of-isolated-acetabular-fractures-and-acetabular-fractures-associated-with-pelvic-ring-injuries
#19
Christiane G Kruppa, Debra L Sietsema, Justin D Khoriaty, Marcel Dudda, Thomas A Schildhauer, Clifford B Jones
OBJECTIVES: To compare mechanism of injury, fracture pattern, displacement, clinical and radiographic outcome of isolated acetabular fractures (Group 1) versus acetabular fractures associated with a pelvic ring injury (Group 2). DESIGN: Retrospective cohort comparative analysis. SETTING: Private orthopaedic practice associated with a level one teaching trauma center. MAIN OUTCOME MEASUREMENTS: Mechanism of injury, fracture pattern, displacement and treatment, Glasgow Coma Scale (GCS), Injury Severity Score (ISS), leg length discrepancy (LLD) and hip dysplasia...
October 7, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/29039128/distal-femoral-flexion-deformity-from-growth-disturbance-treated-with-a-two-level-osteotomy-and-internal-lengthening-nail
#20
Austin T Fragomen, Fiona R Fragomen
Salter Harris fractures of the distal femur can lead to growth disturbance with resulting leg length inequality and knee deformity. We have looked at a case series (3) of patients who presented with a distal femur flexion malunion and shortening treated with a distal femoral osteotomy and plating and a proximal femoral osteotomy with a magnetic internal lengthening nail. Does a two-level osteotomy and internal fixation approach provide a reliable result both radiographically and functionally? The average knee extension loss was 12°, LLD 47 mm, PDFA 65°, MAD 2 mm...
November 2017: Strategies in Trauma and Limb Reconstruction
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