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Hip adduction

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https://www.readbyqxmd.com/read/28642097/are-two-dimensional-measured-frontal-plane-angles-related-to-three-dimensional-measured-kinematic-profiles-during-running
#1
Bart Dingenen, Filip F Staes, Lieselot Santermans, Lien Steurs, Maarten Eerdekens, Jurre Geentjens, Koen H E Peers, Maarten Thysen, Kevin Deschamps
OBJECTIVES: To investigate the temporal relationship between two-dimensional measured frontal plane joint angles and three-dimensional measured kinematic profiles during the stance phase of running, and to assess the intra- and intertester reliability of the two-dimensional angles. DESIGN: Observational study. SETTING: Research laboratory. PARTICIPANTS: Fifteen injury-free elite athletes. MAIN OUTCOME MEASURES: Contralateral pelvic drop (CPD), femoral adduction (FA), hip adduction (HA) and knee valgus (KV) were measured at the deepest landing position during midstance with two-dimensional video analysis during running...
March 4, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28640896/beneficial-effects-of-a-gait-used-while-wearing-a-kimono-to-decrease-the-knee-adduction-moment-in-healthy-adults
#2
Susumu Ota, Yukari Ogawa, Hiroki Ota, Tomoya Fujiwara, Tadashi Sugiyama, Akira Ochi
The knee adduction moment (KAM) relates to medial knee osteoarthritis (OA). Several gait modifications to reduce the KAM for the prevention of knee OA have been studied. Most of the modifications, however, involve voluntary changes in leg alignment. Here we investigated the biomechanical effects for reducing the KAM of a walking style with a small trunk rotation and arm swing gait, which is a natural walking style used while wearing a kimono (Nanba walk) that shifts the ground reaction force toward the stance leg (reduced lever arm)...
2017: PloS One
https://www.readbyqxmd.com/read/28632063/kinetic-analysis-of-the-lower-limbs-in-baseball-tee-batting
#3
Kazumichi Ae, Sekiya Koike, Norihisa Fujii, Michiyoshi Ae, Takashi Kawamura
The purpose of this study was to investigate effects of the ground reaction forces on the rotation of the body as a whole and on the joint torques of the lower limbs associated with trunk and pelvic rotation in baseball tee batting. A total of 22 male collegiate baseball players participated in this study. Three-dimensional coordinate data were acquired by a motion capture system (250 Hz), and ground reaction forces of both legs were measured with three force platforms (1,000 Hz). Kinetic data were used to calculate the moment about the vertical axis through the body's centre of mass resulting from ground reaction forces, as well as to calculate the torque and mechanical work in the lower limb joints...
February 28, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28630740/the-effects-of-hip-abduction-on-sciatic-nerve-biomechanics-during-terminal-hip-flexion
#4
Hal David Martin, Anthony N Khoury, Ricardo Schroder, Juan Gomez-Hoyos, Samrat Yeramaneni, Manoj Reddy, Ian James Palmer
Terminal hip flexion contributes to increased strain in peripheral nerves at the level of the hip joint. The effects of hip abduction and femoral version on sciatic nerve biomechanics are not well understood. A decrease in sciatic nerve strain will be observed during terminal hip flexion and hip abduction, independent of femoral version. Six un-embalmed human cadavers were utilized. Three Differential Variable Reluctance Transducers (DVRTs) sensors were placed on the sciatic nerve while the leg was flexed to 70° with a combination of - 10°, 0°, 20° and 40° adduction/abduction...
July 2017: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/28624711/does-the-powers%C3%A2-strap-influence-the-lower-limb-biomechanics-during-running
#5
Henrike Greuel, Lee Herrington, Anmin Liu, Richard K Jones
Previous research has reported a prevalence of running related injuries in 25.9% to 72% of all runners. A greater hip internal rotation and adduction during the stance phase in running has been associated with many running related injuries, such as patellofemoral pain. Researchers in the USA designed a treatment device 'the Powers™ strap' to facilitate an external rotation of the femur and to thereby control abnormal hip and knee motion during leisure and sport activities. However, to date no literature exists to demonstrate whether the Powers™ strap is able to reduce hip internal rotation during running...
June 3, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28618311/predicting-knee-osteoarthritis-risk-in-injured-populations
#6
Michael J Long, Enrica Papi, Lynsey D Duffell, Alison H McGregor
BACKGROUND: Individuals who suffered a lower limb injury have an increased risk of developing knee osteoarthritis. Early diagnosis of osteoarthritis and the ability to track its progression is challenging. This study aimed to explore links between self-reported knee osteoarthritis outcome scores and biomechanical gait parameters, whether self-reported outcome scores could predict gait abnormalities characteristic of knee osteoarthritis in injured populations and, whether scores and biomechanical outcomes were related to osteoarthritis severity via Spearman's correlation coefficient...
June 12, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28616638/piriformis-muscle-syndrome-with-assessment-of-sciatic-nerve-using-diffusion-tensor-imaging-and-tractography-a-case-report
#7
Keizo Wada, Tomohiro Goto, Tomoya Takasago, Daisuke Hamada, Koichi Sairyo
Piriformis muscle syndrome (PMS) is difficult to diagnose by objective evaluation of sciatic nerve injury. Here we report a case of PMS diagnosed by diffusion tensor imaging (DTI) and tractography of the sciatic nerve, which can assess and visualize the extent of nerve injury. The patient was a 53-year-old man with a 2-year history of continuous pain and numbness in the left leg. His symptoms worsened when sitting. Physical examination, including sensorimotor neurologic tests, the deep tendon reflex test, and the straight leg raise test, revealed no specific findings...
June 14, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28602531/outcomes-of-hip-arthroplasty-after-failed-hip-arthroscopy-a-case-control-study
#8
Simon J M Parker, George Grammatopoulos, Owain L I Davies, Karen Lynch, Tom C B Pollard, Antonio J Andrade
BACKGROUND: Hip arthroscopy is increasingly being used in joint preservation surgery with clear benefits in the treatment of prearthritic conditions. A number of patients, however, will still go on to require subsequent hip arthroplasty, and at present, little evidence exists determining the impact that prior hip arthroscopy may have on the outcomes of a subsequent arthroplasty. METHODS: Using prospectively collated data, we identified 35 patients who had a hip arthroplasty (22 total hip arthroplasties and 13 hip resurfacing arthroplasties) after prior ipsilateral hip arthroscopy (cases)...
May 18, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28599157/comparison-in-three-dimensional-gait-kinematics-between-young-and-older-adults-on-land-and-in-shallow-water
#9
Khalid Abdul Jabbar, Shigetada Kudo, Kee Wee Goh, Ming Rong Goh
This study investigated in three-dimensional space, firstly whether the aquatic medium and secondly ageing, had any effect on the lower limb's joint angles during aquatic-based gait. Three-dimensional joint kinematics of the lower limb of 51 healthy male participants [25 young group (24.6±4.9 years, 172.1±5.5cm, 69.8±10.3kg) and 26 older group (58.5±5.1 years, 167.9±5.1cm, 70.8±12.1kg)] were quantified during land and shallow water walking. Participants walked at their self-selected comfortable speed in both mediums...
May 20, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28593090/dynamic-hip-adduction-abduction-and-abdominal-exercises-from-the-holmich-groin-injury-prevention-program-are-intense-enough-to-be-considered-strengthening-exercises-a-cross-sectional-study
#10
Kasper Krommes, Thomas Bandholm, Markus D Jakobsen, Lars L Andersen, Andreas Serner, Per Hölmich, Kristian Thorborg
BACKGROUND: Training intensity is an important variable in strength training and above 80% of one repetition maximum is recommended for promoting strength for athletes. Four dynamic and two isometric on-field exercises are included in the Hölmich groin-injury prevention study that initially failed to show a reduction in groin injuries in soccer players. It has been speculated that exercise-intensity in this groin-injury prevention program was too low to induce the strength gains necessary to protect against groin-related injuries...
June 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28593088/the-associations-between-hip-strength-and-hip-kinematics-during-a-single-leg-hop-in-recreational-athletes-post-acl-reconstruction-compared-to-healthy-controls
#11
Jeremiah Tate, Tell Suckut, Jensen Wages, Heather Lyles, Benjamin Perrin
BACKGROUND: Only a small amount of evidence exists linking hip abductor weakness to dynamic knee valgus during static and dynamic activities. The associations of hip extensor strength and hip kinematics during the landing of a single leg hop are not known. Purpose: To determine if relationships exist between hip extensor and abductor strength and hip kinematics in both involved and uninvolved limb during the landing phase of a single leg hop in recreational athletes post anterior cruciate ligament (ACL) reconstruction...
June 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28585048/diminished-femoral-head-neck-offset-and-the-restricted-hip-range-of-motion-suggesting-a-possible-role-in-acl-injuries
#12
Abolfazl Bagherifard, Mahmoud Jabalameli, Hooman Yahyazadeh, Azadeh Shafieesabet, Kaveh Gharanizadeh, Ali Jahansouz, Parhan Khanlari
PURPOSE: Femoroacetabular impingement may be associated with anterior cruciate ligament (ACL) injuries. The purpose of this study was to determine the head-neck offset, as measured by 45° Dunn's view alpha angles, in patients with ACL injuries compared to control subjects. METHODS: In this retrospective study, 140 consecutive non-professional athletes with primary ACL ruptures confirmed with knee arthroscopy and 100 consecutive patients with non-ACL injury were enrolled...
June 5, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28585023/dynamic-radiostereometric-analysis-for-evaluation-of-hip-joint-pathomechanics
#13
Lars Hansen, Sepp de Raedt, Peter Bo Jørgensen, Bjarne Mygind-Klavsen, Bart Kaptein, Maiken Stilling
BACKGROUND: Dynamic RSA (dRSA) enables non-invasive 3D motion-tracking of bones and may be used to evaluate in-vivo hip joint kinematics including hip pathomechanics such as femoroacetabular impingement (FAI) and the biomechanical effects of arthroscopic cheilectomy and -rim trimming (ACH). The study aim was to evaluate the kinematic changes in the hip joint after ACH. METHODS: Seven non-FAI affected human cadaveric hips were CT-scanned and CT-bone models were created...
December 2017: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/28577354/clinical-outcomes-of-arthroscopic-surgery-for-external-snapping-hip
#14
Amrit Shrestha, Peng Wu, Heng'an Ge, Biao Cheng
BACKGROUND: Studies have reported on the arthroscopic technique for release of external snapping hip syndrome. However, no study with large sample size has been reported for arthroscopic surgery. METHODS: Patients with 229 bilateral and 19 unilateral external snapping hips were treated from January 2012 to June 2013. After locating the contracture position, arthroscopic surgery was performed accordingly. Preoperative and postoperative angles were compared. RESULTS: Comparing range of motion, all patients obtained higher adduction and flexion angles...
June 2, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28570094/femoral-torsion-impact-of-femur-position-on-ct-and-stereoradiography-measurements
#15
Gérard Morvan, Henri Guerini, Grégory Carré, Valérie Vuillemin
OBJECTIVE: The purpose of this study is to evaluate stereoradiographic measurements of femoral torsion with different femoral positions, in comparison with CT measurements, with use of the current standard axial-slice technique. We hypothesize that CT measurements vary with femoral spatial positioning because of the resulting projection onto the CT plane, whereas stereoradiographic measurements, which are derived from a 3D reconstruction of the femur, remain constant. MATERIALS AND METHODS: Both in vitro and in vivo studies were conducted...
June 1, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28554150/effect-of-valgus-knee-alignment-on-gait-biomechanics-in-healthy-women
#16
Matthew C Hoch, Joshua T Weinhandl
The purpose of this study was to compare lower extremity kinematics and kinetics between women with greater or lesser degrees of valgus knee alignment during gait. Nine women with greater valgus knee alignment (11.9±1.6°) were compared to nine women with lesser valgus knee alignment (6.6±2.4°). Participants completed a biomechanical assessment of overground walking for the right limb. Dependent variables included sagittal and frontal plane joint angles and moments for the hip, knee, and ankle at peak vertical ground reaction force, along with knee abduction angular impulse...
May 19, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28551203/single-limb-landing-biomechanics-are-altered-and-patellar-tendinopathy-related-pain-is-reduced-with-acute-infrapatellar-strap-application
#17
Adam B Rosen, Jupil Ko, Cathleen N Brown
BACKGROUND: Patellar tendinopathy, a common condition of the knee, is often treated with patellar tendon straps to control pain during dynamic activity. Little is known regarding their effect on pain, landing kinematics and kinetics with their application. The purpose of this study was to determine if patellar tendon straps influenced pain, kinematics at landing and ground reaction forces in individuals with patellar tendinopathy versus healthy controls. METHODS: Thirty participants with patellar tendinopathy and 30 controls participated...
May 24, 2017: Knee
https://www.readbyqxmd.com/read/28549598/twist-limits-for-late-twisting-double-somersaults-on-trampoline
#18
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 could be produced in the second somersault of a double somersault on trampoline using asymmetrical movements of the arms and hips. Lower bounds were placed on the durations of arm and hip angle changes based on performances of a world trampoline champion whose inertia parameters were used in the simulations. The limiting movements were identified as the largest possible odd number of half twists for forward somersaulting takeoffs and even number of half twists for backward takeoffs...
May 16, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28543791/the-association-between-eccentric-hip-abduction-strength-and-hip-and-knee-angular-movements-in-recreational-male-runners-an-explorative-study
#19
René B K Brund, Sten Rasmussen, Rasmus O Nielsen, Uwe G Kersting, Uffe Laessoe, Michael Voigt
Weak hip abductors may be related with increased hip adduction and knee abduction angular movement, which may be risk factors of lower extremity injuries. Since the role of eccentric hip abduction strength (EHAS) on hip adduction angular movement and the knee abduction angular movement (KABD) remains unclear and the purpose of the present study was to explore the association between EHAS and hip- and knee angular movement. In 100 healthy male recreational runners, EHAS was quantified using an isokinetic dynamometer, while hip- and knee angular movement were collected using pressure sensitive treadmill and Codamotion active marker system...
May 24, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28542276/effect-of-combined-actions-of-hip-adduction-abduction-on-the-force-generation-and-maintenance-of-pelvic-floor-muscles-in-healthy-women
#20
Amanda C Amorim, Licia P Cacciari, Anice C Passaro, Simone R B Silveira, Cesar F Amorim, Jefferson F Loss, Isabel C N Sacco
Pelvic floor muscle (PFM) force and coordination are related to urinary incontinence severity and to sexual satisfaction. Health professionals frequently combine classic PFM exercises with hip adduction/abduction contraction to treat these disorders, but the real benefits of this practice are still unknown. Based on a theoretical anatomy approach whereby the levator ani muscle is inserted into the obturator internus myofascia and in which force generated by hip movements should increase the contraction quality of PFMs, our aim was to investigate the effects of isometric hip adduction and abduction on PFM force generation...
2017: PloS One
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