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Hip Strength

Benjamin S Killen, Krista L Zelizney, Xin Ye
CONTEXT: Static stretching (SS) and self-administered foam rolling (SAFR) are both effective techniques often used in rehabilitation settings to improve one's range-of-motion (ROM). However, their effects on non-intervened contralateral limb's performance remain equivocal. OBJECTIVE: To examine the acute effects of unilateral hamstrings SS and SAFR on the contralateral hip flexion passive ROM and the strength performance. DESIGN: Randomized crossover trial...
March 15, 2018: Journal of Sport Rehabilitation
G Möckel, W Miehlke
OBJECTIVE: Tenotomy of the psoas tendon in symptomatic internal coxa saltans or psoas impingement should relieve pain. INDICATIONS: Indicated in conservative treatment-resistant internal coxa saltans and in psoas impingement. CONTRAINDICATIONS: Contraindications are symptomatic psoas pathologies in hip dysplasia patients. SURGICAL TECHNIQUE: Three different procedures exist with the arthroscopic technique, in which the psoas tenotomy can be performed at one of three different levels...
March 14, 2018: Operative Orthopädie und Traumatologie
Joshua J Heerey, Joanne L Kemp, Andrea B Mosler, Denise M Jones, Tania Pizzari, Richard B Souza, Kay M Crossley
BACKGROUND: Intra-articular hip pathologies are thought to be associated with the development of hip and groin pain. A better understanding of the relationship between symptoms and imaging findings may improve the management of individuals with intra-articular hip pathologies. OBJECTIVE: To undertake a systematic review and meta-analysis to determine the prevalence of intra-articular hip pathologies in individuals with and without pain. METHODS: Seven electronic databases were searched in February 2017 for studies investigating the prevalence of intra-articular hip pathologies using MRI, MRA or CT...
March 14, 2018: British Journal of Sports Medicine
Arnhild Bakken, Stephen Targett, Tone Bere, Cristiano Eirale, Abdulaziz Farooq, Andrea B Mosler, Johannes L Tol, Rod Whiteley, Karim M Khan, Roald Bahr
BACKGROUND: Lower extremity muscle strength tests are commonly used to screen for injury risk in professional soccer. However, there is limited evidence on the ability of such tests in predicting future injuries. PURPOSE: To examine the association between hip and thigh muscle strength and the risk of lower extremity injuries in professional male soccer players. STUDY DESIGN: Case-control study; Level of evidence, 3. METHODS: Professional male soccer players from 14 teams in Qatar underwent a comprehensive strength assessment at the beginning of the 2013/2014 and 2014/2015 seasons...
March 1, 2018: American Journal of Sports Medicine
A F Martinez, G C Lessi, C Carvalho, F V Serrao
Kinematic changes have been correlated with different lower limb injuries. Movement is influenced by multiple factors and strength is one of the contributors that can influence it. Thus, the aim of this study was to evaluate the correlation among trunk and hip isometric strength with trunk and lower-limb kinematics during a single-leg drop vertical jump. Twenty-three healthy recreational women athletes aged between 18 and 35 years underwent isometric evaluation of hip abductor, hip extensor, and lateral trunk muscle strength and three-dimensional trunk and lower-limb kinematics during a single-leg drop vertical jump...
March 6, 2018: Journal of Strength and Conditioning Research
Shuman Yang, Yunhua Luo, Lang Yang, Enrico Dall'Ara, Richard Eastell, Andrew L Goertzen, Eugene V McCloskey, William D Leslie, Lisa M Lix
BACKGROUND: Dual-energy X-ray absorptiometry (DXA)-based finite element analysis (FEA) has been studied for assessment of hip fracture risk. Femoral strength (FS) is the maximum force that the femur can sustain before its weakest region reaches the yielding limit. Fracture risk index (FRI), which also considers subject-specific impact force, is defined as the ratio of von Mises stress induced by a sideways fall to the bone yield stress over the proximal femur. We compared risk stratification for prior hip fracture using FS and FRI derived from DXA-based FEA...
March 8, 2018: Bone
Alon Rabin, Ofira Einstein, Zvi Kozol
OBJECTIVE: To explore the association between ankle dorsiflexion (DF) range of motion (ROM), and hip abductor muscle strength, to visually-assessed quality of movement during jump-landing. DESIGN: Cross-sectional. SETTING: Gymnasium of participating teams. PARTICIPANTS: 37 female volleyball players. MAIN OUTCOME MEASURES: Quality of movement in the frontal-plane, sagittal-plane, and overall (both planes) was visually rated as "good/moderate" or "poor"...
January 17, 2018: Physical Therapy in Sport
Katsuhiko Maezawa, Masahiko Nozawa, Takahito Yuasa, Hironobu Sato, Motosi Gomi, Kazuo Kaneko
BACKGROUND: We think that it is necessary to evaluate whether the patient after total hip arthroplasty has achieved age-appropriate locomotor ability by improvement in hip joint function. The 25-question Geriatric Locomotive Function Scale (GLFS-25) have been determined age-specific standard values for the general population. The aim of this study was to compare postoperative hip muscle strength and functional performance at 3 months after THA with preoperative levels, and to compare the outcomes at 3 months after THA with the function of age-matched adults without hip disease...
March 7, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
Akio Kanda, Kazuo Kaneko, Osamu Obayashi, Atsuhiko Mogami, Itaru Morohashi
INTRODUCTION: In total hip arthroplasty via a direct anterior approach, the femur must be elevated at the time of femoral implant placement. For adequate elevation, division of the posterior soft tissues is necessary. However, if we damage and separate the posterior muscle tissue, we lose the benefits of the intermuscular approach. Furthermore, damage to the posterior soft tissue can result in posterior dislocation. We investigate that protecting the posterior soft tissue increases the joint stability in the early postoperative period and results in a lower dislocation rate...
March 9, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
Peter J Snyder, Shalender Bhasin, Glenn R Cunningham, Alvin M Matsumoto, Alisa J Stephens-Shields, Jane A Cauley, Thomas M Gill, Elizabeth Barrett-Connor, Ronald S Swerdloff, Christina Wang, Kristine E Ensrud, Cora E Lewis, John T Farrar, David Cella, Raymond C Rosen, Marco Pahor, Jill P Crandall, Mark E Molitch, Susan M Resnick, Matthew Budoff, Emile R Mohler, Nanette K Wenger, Harvey Jay Cohen, Stanley Schrier, Tony M Keaveny, David Kopperdahl, David Lee, Denise Cifelli, Susan S Ellenberg
The Testosterone Trials (TTrials) were a coordinated set of seven, placebo-controlled, double blind trials in 788 men of mean age 72 years to determine the efficacy of increasing the testosterone levels of older men with low testosterone. Testosterone treatment increased the median testosterone level from unequivocally low at baseline to midnormal for young men after three months and maintained that level until month 12. In the Sexual Function Trial, testosterone increased sexual activity, sexual desire and erectile function...
March 7, 2018: Endocrine Reviews
John M Dundon, Dvorah Leah Felberbaum, William J Long
Background: Total hip arthroplasty (THA) is a highly successful surgery with a high prevalence in women. Women have been noted to have smaller proximal femoral anatomy and decreased bone strength compared to males. The goal of our study was to define the size discrepancy in femoral stem implants between men and women using a metaphyseal fitting single taper stem. Methods: We retrospectively reviewed the THA's performed by a single surgeon over the previous two years...
June 2018: Journal of Orthopaedics
Melanie A Holden, Kim L Bennell, Rebecca Whittle, Linda Chesterton, Nadine E Foster, Nicola A Halliday, Libby N Spiers, Elizabeth M Mason, Jonathan G Quicke, Christian D Mallen
Background: Hip osteoarthritis (OA) is common, painful and disabling. Physical therapists have an important role in managing patients with hip OA, however little is known about their current management approach and whether it aligns with clinical guideline recommendations. Objective: The objective of this study is to describe UK physical therapists' current management of patients with hip OA and to determine whether it aligns with clinical guidelines. Design: The design is a cross-section questionnaire...
March 4, 2018: Physical Therapy
Kengo Shimozaki, Junsuke Nakase, Yasushi Takata, Yosuke Shima, Katsuhiko Kitaoka, Hiroyuki Tsuchiya
PURPOSE: This 3-year prospective study assessed risk factors for noncontact anterior cruciate ligament (ACL) injuries in female Japanese high school basketball players. Players suffering noncontact ACL injuries were assumed to demonstrate poorer hip abductor, knee flexor, and knee extensor muscle strength, as well as static balance, than those without injuries. METHODS: One hundred and ninety-five new female high school basketball players underwent baseline examinations for various parameters during their first year of high school...
March 6, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
B-J Kim, S H Lee, C M Isales, J-M Koh, M W Hamrick
Data gathered from a nationally representative cohort demonstrate that higher dietary protein intake was positively associated with the composite indices of femoral neck strength in both men and women, suggesting that higher protein intake may contribute to lower risk of hip fracture through the improvement of bone strength. INTRODUCTION: Despite the general belief that higher protein intake may be helpful for bone homeostasis, its impact on human bone health is still debated. Furthermore, the association of dietary protein intake with femoral neck (FN) strength, which can predict fracture risk independently of bone mineral density (BMD), has not been thoroughly studied...
March 6, 2018: Osteoporosis International
C S Florio
A computational model was used to compare the local bone strengthening effectiveness of various isometric exercises that may reduce the likelihood of distal tibial stress fractures. The developed model predicts local endosteal and periosteal cortical accretion and resorption based on relative local and global measures of the tibial stress state and its surface variation. Using a multisegment three-dimensional leg model, tibia shape adaptations due to thirty-three combinations of hip, knee, and ankle joint angles and the direction of a single or sequential series of generated isometric resultant forces were predicted...
March 5, 2018: International Journal for Numerical Methods in Biomedical Engineering
Ole Martin Steihaug, Clara Gram Gjesdal, Bård Bogen, Målfrid Holen Kristoffersen, Gunhild Lien, Karl Ove Hufthammer, Anette Hylen Ranhoff
BACKGROUND: Patients with hip fracture frequently have sarcopenia and are at great risk of loss of mobility. We have investigated if sarcopenia predicts change in mobility after hip fracture. METHODS: This is a prospective, multicenter observational study with one-year follow-up. Patients with hip fracture who were community-living and capable of walking before the fracture were included at three hospitals in Norway (2011-2013). The primary outcome of the study was change in mobility, measured by the New Mobility Score (NMS)...
March 5, 2018: BMC Geriatrics
Paula C Charlton, Benjamin Raysmith, Martin Wollin, Simon Rice, Craig Purdam, Ross A Clark, Michael K Drew
OBJECTIVES: To evaluate strength and flexibility measures pre- and post- Australian Football (AF) competition to determine their potential utility as secondary prevention measures. DESIGN: Cohort study. SETTING: Semi-professional AF club. PARTICIPANTS: Ten male AF athletes (mean ± SD; age, 21.3 ± 2.2 years; height, 186.1 ± 6.3 cm; weight, 83.5 ± 8.6 kg). MAIN OUTCOME MEASURES: Maximal unilateral isometric knee flexion strength performed in 45 degrees of hip flexion and 30 degrees of knee flexion, flexibility measures of hip and knee extension and ankle dorsiflexion...
February 2, 2018: Physical Therapy in Sport
Philippe Hernigou, Jean Charles Auregan, Claire Bastard, Victor Housset, Charles Henri Flouzat-Lachaniette, Arnaud Dubory
PURPOSE: It is unclear whether late THA periprosthetic femoral fractures are related to a mechanical mechanism that decreases strength of the femur (for example, loosening) or to a biological problem as osteolysis. It is also unknown if ceramic on ceramic bearing couples decrease the risk of late periprosthetic fractures as a result of the absence of wear and osteolysis. MATERIAL AND METHODS: We therefore asked whether the cumulative long-term fractures were different according to the couple of friction ceramic on ceramic or ceramic on polyethylene in 327 patients (654 hips) with bilateral THA (one ceramic-ceramic, and the contralateral ceramic-polyethylene) who had THA with cemented stems performed between from 1978 to 2000 for osteonecrosis...
March 4, 2018: International Orthopaedics
Elisa Doria Pires, Paula Rezende Camargo
BACKGROUND: This study measured strength of the trunk and hip, and compared Y Balance Test and Upper Quarter Y Balance Test in individuals without and with scapular dyskinesis. Strength and endurance of the scapulothoracic muscles were also assessed. METHODS: Forty-four individuals without shoulder pain were divided in 2 groups: without scapular dyskinesis (age 26.00, SD 4.10 years) and scapular dyskinesis (age 23.68, SD 4.20 years). Scapular dyskinesis was assessed by clinical observation of the scapular motion during arm elevation, and was classified as present or absent...
February 27, 2018: Clinical Biomechanics
Behzad Shiroud Heidari, Seyed Mohammad Davachi, Amin Hedayati Moghaddam, Javad Seyfi, Iman Hejazi, Razi Sahraeian, Hamid Rashedi
In this study, injection molding process of ultrahigh molecular weight polyethylene (UHMWPE) reinforced with nano-hydroxyapatite (nHA) was simulated and optimized through minimizing the shrinkage and warpage of the hip liners as an essential part of a hip prosthesis. Fractional factorial design (FFD) was applied to the design of the experiment, modeling, and optimizing the shrinkage and warpage of UHMWPE/nHA composite liners. The Analysis of variance (ANOVA) was applied to find the importance of operative parameters and their effects...
February 21, 2018: Journal of the Mechanical Behavior of Biomedical Materials
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