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https://www.readbyqxmd.com/read/29449003/upper-partial-fibulectomy-improves-knee-biomechanics-and-function-and-decreases-knee-pain-of-osteoarthritis-a-pilot-and-biomechanical-study
#1
Yong Nie, Jun Ma, ZeYu Huang, Bin Xu, Shuo Tang, Bin Shen, Virginia Byers Kraus, FuXing Pei
To investigate the change in clinical outcomes and biomechanical properties of the knee in response to upper partial fibulectomy. Sixteen patients with medial compartment knee osteoarthritis (KOA) underwent upper partial fibulectomy. Visual analog scale (VAS) pain, the hospital for special surgery knee score (HSS), hip-knee-ankle (HKA) angle (measured in the frontal plane), and flexion/extension range of motion of the knee were assessed before and up to 6 months after surgery. Patients were evaluated for gait parameters and overall peak knee adduction moment (KAM)...
December 13, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29433043/increased-movement-variability-in-one-leg-hops-about-20-years-after-treatment-of-anterior-cruciate-ligament-injury
#2
Divya Srinivasan, Eva Tengman, Charlotte K Häger
BACKGROUND: Recent studies highlight the need for understanding movement control of adjacent joints when evaluating knee function following anterior cruciate ligament (ACL) injury. However, while short-term adaptations to lower-extremity joint coupling have been studied, little is known about any potential long-term adaptations in neuromuscular control displayed by ACL-injured individuals. The aim of our study was to determine whether coordination variability of the hip-knee joint couplings during the one-leg hop is altered about 20 years after injury in two ACL-injured groups compared to healthy knee controls...
February 6, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29427858/spatiotemporal-and-kinematic-characteristics-of-gait-initiation-across-a-wide-speed-range
#3
Ben Stansfield, Katrina Hawkins, Sarah Adams, Doireann Church
BACKGROUND: Gait initiation can be performed at a range of speeds. Those with disability tend to use a slower speed compared to those without disability. In assessing the spatiotemporal and kinematic characteristics of gait initiation it is therefore important to consider the effects of speed on outcomes. RESEARCH QUESTION: What is the effect of speed of performance on spatiotemporal and kinematic characteristics of gait initiation? METHODS: Spatiotemporal and kinematic characteristics were measured across a wide range of speeds from very slow to very fast (normalised initiating leg (swing or SW limb) step speed 0...
February 5, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29413788/biomechanical-characteristics-of-lower-limb-gait-waveforms-associations-with-body-fat-in-children
#4
Ryan Mahaffey, Stewart C Morrison, Paul Bassett, Wendy I Drechsler, Mary C Cramp
BACKGROUND: Childhood obesity is associated with musculoskeletal dysfunction and altered lower limb biomechanics during gait. Few previous studies have explored relationships between childhood obesity measured by body fat and lower limb joint waveform kinematics and kinetics. RESEARCH QUESTION: What is the association between body fat and hip, knee and ankle joint angles and moments during gait and in 7 to 11 year-old boys? METHODS: Fifty-five boys participated in the study...
February 2, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29408164/the-limits-of-aerial-techniques-for-producing-twist-in-forward-1%C3%A2-somersault-dives
#5
M R Yeadon, M J Hiley
An angle-driven computer simulation model of aerial movement was used to determine the maximum amount of twist that can be produced in a forward 1½ somersault dive from a three-metre springboard using various aerial twisting techniques. The segmental inertia parameters of an elite springboard diver were used in the simulations and lower bounds were placed on the durations of arm and hip angle changes based on recorded performances of twisting somersaults. A limiting dive was identified as that producing the largest possible whole number of twists...
February 1, 2018: Human Movement Science
https://www.readbyqxmd.com/read/29397288/contribution-of-the-ligamentum-teres-to-hip-stability-in-the-presence-of-an-intact-capsule-a-cadaveric-study
#6
Suenghwan Jo, Alexander W Hooke, Kai-Nan An, Robert T Trousdale, Rafael J Sierra
PURPOSE: To determine the contribution of the ligamentum teres (LT) to hip stability in the presence of an intact capsule with special attention to the change in range of motion and femoral head translation. METHODS: Seven fresh-frozen cadaveric pelvises were used. Following visual inspection of the LT at different hip positions, internal rotation angles were measured at 10° of extension and at 0° of flexion, while external rotation was measured at 60°, 90°, and 110° of flexion with different hip abduction angles using electromagnetic motion tracking sensor...
January 31, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29381424/spatiotemporal-analysis-of-3d-kinematic-asymmetry-in-professional-cycling-during-an-incremental-test-to-exhaustion
#7
Camille Pouliquen, Guillaume Nicolas, Benoit Bideau, Gérard Garo, Armand Megret, Paul Delamarche, Nicolas Bideau
This study investigated the influence of an incremental exercise on bilateral asymmetry through the spatio-temporal evolution of 3D joint angular displacement, using the Normalized Symmetry Index ([Formula: see text]) and cross-correlation methods. Twelve professional cyclists performed an incremental test to exhaustion, during which motion capture was used. Results revealed a decrease in range of motion between the first and last stages for twelve of the eighteen joint rotations, with the highest impact observed for right hip flexion/extension (61...
January 30, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29354968/-kinetic-mechanism-of-electroacupuncture-for-stair-climbing-in-knee-osteoarthritis-patients
#8
Xiangbin Wang, Xuerong Xie, Meijin Hou, Xiaoling Wang, Jian Chen, Jiao Yu, Xiang Li
OBJECTIVE: To observe the kinetic change that reflects joint loading in different planes during stair climbing in knee osteoarthritis (KOA) after electroacupuncture (EA) by three-dimensional motion analysis, so as to provide reference for its biomechanical mechanism treated with acupuncture. METHODS: Forty KOA patients, in accordance with the random number table, were assigned into an observation group and a control group, 20 cases in each one and finally 18 cases completed...
October 12, 2017: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
https://www.readbyqxmd.com/read/29349962/-midterm-clinical-outcome-for-ankylosing-spondylitis-patients-with-early-hip-involved-diseases-treated-with-arthroscopic-technique
#9
Chun-Bao Li, Wei Qi, Zhi-Gang Wang, Zhong-Li Li, Min Wei, Xu Cai, Qiang Zhang, Juan-Li Zhu, Yang Liu, Yu-Jie Liu
OBJECTIVE: To study the clinical outcome of manipulation release combined with arthroscopic debridement and synovia resection under general anesthesia for early hip involvment in patients with ankylosing spondylitis. METHODS: Manipulation release combined with arthroscpic debridement and synovium resection were performed for hip lesion in 22 patients with ankylosing spondylitis from June 2011 to June 2013, incuding 6 males and 16 females with anverage age of 24...
March 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29349093/preseason-adductor-squeeze-strength-in-303-spanish-male-soccer-athletes-a-cross-sectional-study
#10
Ernest Esteve, Michael Skovdal Rathleff, Jordi Vicens-Bordas, Mikkel Bek Clausen, Per Hölmich, Lluís Sala, Kristian Thorborg
Background: Hip adductor muscle weakness and a history of groin injury both have been identified as strong risk factors for sustaining a new groin injury. Current groin pain and age have been associated with hip adductor strength. These factors could be related, but this has never been investigated. Purpose: To investigate whether soccer athletes with past-season groin pain and with different durations of past-season groin pain had lower preseason hip adductor squeeze strength compared with those without past-season groin pain...
January 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29291280/hip-and-knee-exercise-for-patellofemoral-pain-using-the-evidence-to-guide-physical-therapist-practice
#11
(no author information available yet)
The etiology of patellofemoral pain (PFP) is thought to include both local factors (those near the patellofemoral joint and surrounding tissues) and nonlocal factors (those related to the mechanics of the distal and proximal joints). Traditionally, PFP rehabilitation protocols have focused on local factors. Strengthening of the hip may reduce excessive hip adduction and medial rotation during weightbearing activities and so decrease patellofemoral joint stresses. However, while previous studies indicate that including hip strengthening may lessen the intensity of PFP, the effects on strength and activity remain uncertain...
January 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29275431/influence-of-femoral-bowing-on-range-of-motion-after-total-hip-arthroplasty
#12
Keisuke Akiyama, Takaaki Shibuya
PURPOSE: The influence of physiologic femoral bowing on range of motion (ROM) after total hip arthroplasty (THA) remains unknown. The purpose of this study was to investigate the morphology of the femur in patients who underwent THA, and to analyze the influence of femoral bowing on ROM due to implant impingement after THA. METHODS: The ROM was calculated from 100 hips in 90 patients who underwent THA using computed tomography data with a 3D dynamic analysis software...
December 23, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/29250337/how-to-address-ischiofemoral-impingement-treatment-algorithm-and-review-of-the-literature
#13
REVIEW
Hans Gollwitzer, Ingo J Banke, Johannes Schauwecker, Ludger Gerdesmeyer, Christian Suren
Ischiofemoral impingement (IFI) is a rare cause of hip pain defined by a narrowing of the space between the lateral aspect of the os ischium and the lesser trochanter of the femur. Several underlying anatomic, functional and iatrogenic pathologies have been identified for symptomatic IFI in native hip joints and after total hip arthroplasty. Clinical symptoms vary but most commonly consist of pain of the lower buttock and groin including the inner thigh, and a snapping or clunking phenomenon is often reported...
December 2017: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/29248191/manipulating-post-stroke-gait-exploiting-aberrant-kinematics
#14
Megan E Reissman, Keith E Gordon, Yasin Y Dhaher
Post-stroke individuals often exhibit abnormal kinematics, including increased pelvic obliquity and hip abduction coupled with reduced knee flexion. Prior examinations suggest these behaviors are expressions of abnormal cross-planar coupling of muscle activity. However, few studies have detailed the impact of gait-retraining paradigms on three-dimensional joint kinematics. In this study, a cross-tilt walking surface was examined as a novel gait-retraining construct. We hypothesized that relative to baseline walking kinematics, exposure to cross-tilt would generate significant changes in subsequent flat-walking joint kinematics during affected limb swing...
December 6, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29240339/traumatic-hip-dislocation-in-pediatric-patients
#15
Antti Stenroos, Topi Laaksonen, Yrjänä Nietosvaara
Traumatic hip dislocations constitute approximately 5% of all pediatric dislocations and typically result from high-energy trauma. However, pediatric hip dislocations can also occur as a result of minor energy due to flexibility of the joint structures of the immature hip. Children with a posteriorly dislocated hip present with the injured hip in flexion, adduction and internal rotation. Spontaneous relocation of hip dislocation is frequent and a thorough physical examination of the whole lower extremity is always required to reduce the chance of missing hip dislocation/subluxation...
2017: Duodecim; Lääketieteellinen Aikakauskirja
https://www.readbyqxmd.com/read/29234558/length-change-of-the-short-external-rotators-of-the-hip-in-common-stretch-positions-a-cadaveric-study
#16
Ryan P McGovern, Benjamin R Kivlan, RobRoy L Martin
Background: Stretching of the deep rotators of the hip is commonly employed in patients with lumbosacral, sacroiliac, posterior hip, and buttock pain. There is limited research demonstrating the effectiveness of common stretching techniques on the short external rotators of the hip. Purpose: The objective of this study was to evaluate length change during stretching of the superior and inferior fibers of the piriformis, superior gemellus, obturator internus, and inferior gemellus...
December 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29179051/differences-in-pattern-of-variability-for-lower-extremity-kinematics-between-walking-and-running
#17
Amanda Estep, Steven Morrison, Shane Caswell, Jatin Ambegaonkar, Nelson Cortes
This study characterizes walking and running patterns in healthy individuals using linear and nonlinear methods Seventeen individuals (12 males, 5 females) volunteered for the study. 3D kinematic data during walking (WA) and running (RU) on a motorized treadmill were captured using reflective markers placed on lower body (200Hz). A single 25s trial (5000 data points) was collected for each gait task. WA speed was 1.39±0.12m/s, whereas RU speed was 2.56±0.27m/s. Variables of interest included ankle plantar/dorsi flexion, knee flexion/extension, knee abduction/adduction, hip flexion/extension, and hip abduction/adduction angles...
November 21, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29178297/frontal-plane-hip-joint-loading-according-to-pain-severity-in-people-with-hip-osteoarthritis
#18
Michelle Hall, Kim Allison, Tim V Wrigley, Ben R Metcalf, Yong-Hao Pua, Ans Van Ginckel, Kim L Bennell
The primary objective was to examine the hip adduction moment during walking in people with hip osteoarthritis (OA) according to pain severity. Sixty-eight participants with unilateral symptomatic hip OA were included. Pain during walking was assessed on a 5-point Likert item within the Western Ontario and McMaster Universities Index (no pain = 12; mild pain n = 37; moderate pain n = 19). Measures of the external hip adduction moment (peaks, Nm/BW × BH (%) and impulse, Nm.s/BW × BH (%)) were determined...
November 27, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29158960/a-combined-treatment-approach-emphasizing-impairment-based-manual-therapy-and-exercise-for-hip-related-compensatory-injury-in-elite-athletes-a-case-series
#19
Steve Short, Gretchen Short, Donald Strack, Philip Anloague, Brian Brewster
Background/Purpose: Athletes experiencing hip, groin, and low back pain often exhibit similar clinical characteristics. Individuals with hip, groin and low back pain may have the presence of multiple concurrent pathoanatomical diagnoses. Regardless, similar regional characteristics and dysfunction may contribute to the patient's chief complaint, potentially creating a sub-group of individuals that may be defined by lumbopelvic and hip mobility limitations, motor control impairments, and other shared clinical findings...
November 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29154234/activity-and-quality-of-life-after-total-hip-arthroplasty
#20
Anna Świtoń, Ewa Wodka-Natkaniec, Łukasz Niedźwiedzki, Tadeusz Gaździk, Tadeusz Niedźwiedzki
BACKGROUND: Coxarthrosis is a chronic musculoskeletal condition that causes severe pain and considerable limi-tation of the patient's motor performance. Total hip arthroplasty is one of the most common and effective methods used in the treatment of advanced degenerative changes. The aim of the present study was to evaluate the activity and quality of life of patients after unilateral total hip arthroplasty. MATERIAL AND METHODS: The study was conducted in a group of 189 patients who had undergone unilateral total hip arthroplasty...
October 31, 2017: Ortopedia, Traumatologia, Rehabilitacja
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