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https://www.readbyqxmd.com/read/29768090/kinematic-differences-in-upper-limb-joints-between-flat-and-topspin-forehand-drives-in-competitive-male-tennis-players
#1
Cyril Genevois, Machar Reid, Thomas Creveaux, Isabelle Rogowski
The topspin tennis forehand drive has become a feature of modern game; yet, as compared to the serve, there has been little research analysing its kinematics. This is surprising given that there is considerably more variation in the execution of the topspin forehand. Our study is the first to examine the amplitude of upper limb joint rotations that produce topspin in the forehand drives of 14 male competitive tennis players using video-based motion analysis. Humerothoracic abduction (-)/adduction (+), extension (-) /flexion (+), and external (-)/internal (+) rotation, elbow extension (-) /flexion (+) and forearm supination (-)/pronation (+), wrist extension (-)/flexion (+) and ulnar (-)/radial (-) deviation were computed...
May 16, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29763814/inter-segment-foot-motion-in-girls-using-a-three-dimensional-multi-segment-foot-model
#2
Woo Young Jang, Dong Yeon Lee, Hae Woon Jung, Doo Jae Lee, Won Joon Yoo, In Ho Choi
BACKGROUND: Several multi-segment foot models (MFMs) have been introduced for in vivo analyses of dynamic foot kinematics. However, the normal gait patterns of healthy children and adolescents remain uncharacterized. We sought to determine normal foot kinematics according to age in clinically normal female children and adolescents using a Foot 3D model. METHODS: Fifty-eight girls (age 7-17 years) with normal function and without radiographic abnormalities were tested...
May 6, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29747624/association-of-wrist-and-forearm-range-of-motion-measures-with-self-reported-functional-scores-amongst-patients-with-distal-radius-fractures-a-longitudinal-study
#3
Zixian Yang, Peggy Poh Hoon Lim, Sing Hwee Teo, Huiwen Chen, Huaying Qiu, Yong Hao Pua
BACKGROUND: Patients with distal radius fractures (DRF) often have limited range-of-motion (ROM) in multiple planes of movement. No studies have comprehensively examined the impact of various ROM limitations on physical function. METHODS: We performed a multi-center, longitudinal study of 138 patients with conservatively managed DRF. ROM measures were taken at initial evaluation, and at 4 and 8 weeks later. Self-reported physical function was indexed by the Quick Disabilities of the Arm, Shoulder and Hand (QuickDASH)...
May 11, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29742725/relationship-between-foot-posture-and-dental-malocclusions-in-children-aged-6-to-9-years-a-cross-sectional-study
#4
Ana Marchena-Rodríguez, Noelia Moreno-Morales, Edith Ramírez-Parga, María Teresa Labajo-Manzanares, Alejandro Luque-Suárez, Gabriel Gijon-Nogueron
The aim of this study was to determine the association, if any, between foot posture and dental malocclusions in the anteroposterior plane, in children.The study population consisted of 189 children (95 boys and 94 girls) aged 6 to 9 years. In every case, previous informed consent was requested and obtained from the parent/guardian and the study was approved by the Ethics Committee of the University of Málaga (CEUMA 26/2015H).This observational, descriptive, cross-sectional analysis is based on a study population (STROBE)...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29741468/kinematic-parameters-contributing-to-the-production-of-spin-in-elite-finger-spin-bowling
#5
L Sanders, P J Felton, M A King
The aim of this study was to identify the key kinematic parameters which contribute to higher spin rates in elite finger spin bowling. Kinematic data were collected for twenty-three elite male finger spin bowlers with thirty kinematic parameters calculated for each delivery. Stepwise linear regression and Pearson product moment correlations were used to identify kinematic parameters linked to spin rate. Pelvis orientation at front foot contact (r = 0.674, p < 0.001) and ball release (r = 0.676, p < 0...
May 9, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29740633/effect-of-early-use-of-abobotulinumtoxina-after-stroke-on-spasticity-progression-protocol-for-a-randomised-controlled-pilot-study-in-adult-subjects-with-moderate-to-severe-upper-limb-spasticity-ontime-pilot
#6
Keng He Kong, Jovita Balcaitiene, Hugues Berard, Pascal Maisonobe, Khean Jin Goh, Witsanu Kumthornthip, Raymond L Rosales
Introduction: Approximately 15 million people suffer a stroke annually, up to 40% of which may develop spasticity, which can result in impaired limb function, pain and associated involuntary movements affecting motor control.Robust clinical data on spasticity progression, associated symptoms development and functional impairment is scarce. Additionally, maximal duration of muscle tone reduction following botulinum toxin type A (BoNT-A) injections remains undetermined. The ONTIME pilot study aims to explore these issues and evaluate whether abobotulinumtoxinA 500 U (Dysport® ; Ipsen) administered intramuscularly within 12 weeks following stroke delays the appearance or progression of symptomatic (disabling) upper limb spasticity (ULS)...
June 2017: Contemporary Clinical Trials Communications
https://www.readbyqxmd.com/read/29729800/proximal-supination-osteotomy-of-the-first-metatarsal-for-hallux-valgus
#7
REVIEW
Ryuzo Okuda
Postoperative recurrence of hallux valgus is a relatively common complication and is associated with unsatisfactory surgical outcomes. Risk factors for postoperative recurrence include a round lateral edge of the first metatarsal head (a positive round sign) and incomplete reduction of the sesamoids. These risk factors may relate to residual pronation of the first metatarsal following surgery. A novel technique of a proximal supination osteotomy, in which varus and pronation of the first metatarsal can be corrected simultaneously, can achieve significant correction in moderate or severe hallux valgus deformity and a low rate of hallux valgus recurrence...
June 2018: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/29729799/using-the-center-of-rotation-of-angulation-concept-in-hallux-valgus-correction-why-do-we-choose-the-proximal-oblique-sliding-closing-wedge-osteotomy
#8
REVIEW
Emilio Wagner, Cristian Ortiz, Pablo Wagner
Many different surgeries have been proposed for hallux valgus treatment, osteotomies being the currently recommended ones. Because of high recurrence rates, distal, diaphyseal and proximal osteotomies have been used to improve alignment and sesamoid reduction. The center of rotation of angulation (CORA) concept applies to any deformity and helps to completely realign 2 bone segments. When used with proximal osteotomies, bone displacement and angulation is performed obtaining complete deformity correction. The proximal oblique sliding closing wedge (POSCOW) osteotomy follows the CORA concept and permits preoperative planning...
June 2018: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/29729797/how-i-use-a-three-dimensional-approach-to-correct-hallux-valgus-with-a-distal-metatarsal-osteotomy
#9
REVIEW
Daniel M G Winson, Anthony Perera
The role of uniplanar osteotomy in correction of multiplanar deformity in hallux valgus is a developing and promising concept. Careful consideration should be given to the literature when considering the concept of preexisting pronation of the metatarsal. Recent weight-bearing computed tomography studies contradict the existing literature and state that there is little or no rotation of the metatarsal; therefore, a multiplanar osteotomy should aim to correct the rotation caused by soft tissue imbalance at the tarsometatarsal and metatarsophalangeal joints rather than in the metatarsal itself...
June 2018: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/29729796/sesamoid-position-in-hallux-valgus-in-relation-to-the-coronal-rotation-of-the-first-metatarsal
#10
REVIEW
Jin Su Kim, Ki Won Young
Hallux valgus (HV) is not a simple two-dimensional deformity but is instead a three-dimensional deformity that is closely linked to sesamoid position and first metatarsal (MT) pronation. HV may or may not be accompanied by sesamoid subluxation and/or first MT head pronation. Each of these scenarios should be assessed using weighted computed tomography scan preoperatively, and the necessary corrections should be performed accordingly.
June 2018: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/29729795/is-the-rotational-deformity-important-in-our-decision-making-process-for-correction-of-hallux-valgus-deformity
#11
REVIEW
Pablo Wagner, Emilio Wagner
Rotational deformity in hallux valgus is a recognized component and a demonstrated recurrence factor in patients who have undergone surgery. More than 20 years ago, publications started reporting metatarsal pronation as part of the hallux valgus pathology. Identifying metatarsal pronation should be part of the preoperative angular measurements. The proximal metatarsal rotational osteotomy and Lapidus fusion are some of the few techniques that reliably correct metatarsal pronation. They have good results, with more nonunions reported for the Lapidus...
June 2018: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/29727816/a-ct-based-approach-with-3d-modeling-to-determine-optimal-radiographic-views-of-the-scaphotrapezial-and-scaphotrapezoid-joints
#12
Aoife MacMahon, Steven B Orr, Lauren E Wessel, Kathleen N Meyers, Kara Fields, Shari T Jawetz, Roger J Bartolotta, Duretti Fufa
PURPOSE: To use a CT-based approach with 3D modeling to determine novel radiographic views of the scaphotrapezial (STl) and scaphotrapezoid (STd) joints. MATERIALS AND METHODS: Consecutive wrist CT scans excluding those with pathology of the distal radius, scaphoid, trapezium, or trapezoid of subjects between ages 18 and 60 years were retrospectively reviewed. Three-dimensional reconstructions of CT scans were created and best-fit planes of the STl and STd joints were generated...
April 24, 2018: Clinical Imaging
https://www.readbyqxmd.com/read/29725517/concomitant-traumatic-peroneal-tendon-dislocation-and-medial-malleolus-fracture-a-case-report
#13
A R Vosoughi, M A Erfani
Peroneal tendon dislocation in association with medial malleolus fracture is a very rare traumatic injury to the ankle. A 19-year old male patient was referred after injury sustained in a motorcycle accident with car, with concomitant traumatic peroneal tendon dislocation and medial malleolus fracture. The possible mechanism of this unusual injury could have been sudden external rotation force to the pronated foot in full dorsiflexed position of the ankle. Diagnosis of peroneal tendon subluxation or dislocation should be carefully evaluated in patients with single medial malleolus fracture...
March 2018: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/29713746/the-treatment-of-chronic-radial-head-dislocation-in-monteggia-fracture-without-annular-ligament-reconstruction
#14
Hsuan-Yu Chen, Kuan-Wen Wu, Zheng-Ren Dong, Shier-Chieg Huang, Ken N Kuo, Ting-Ming Wang
INTRODUCTION: The treatment of neglected radial head dislocation after missed Monteggia fracture dislocation in children is a controversial issue. The purpose of this study is to report our clinical experience in the treatment of the condition without annular ligament reconstruction. METHOD: This is a retrospective review of 20 patients between 2008 and 2014. Procedures included open reduction of the radial head and ulnar lengthening angulation osteotomy. In cases of unstable radial head reduction, a trans-capitellar K wire was applied...
May 1, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29713385/a-minimal-markerset-for-three-dimensional-foot-function-assessment-measuring-navicular-drop-and-drift-under-dynamic-conditions
#15
Patric Eichelberger, Angela Blasimann, Nicole Lutz, Fabian Krause, Heiner Baur
Background: The validity of predicting foot pronation occurring mainly at the midfoot by surrogate measures from the rearfoot, like eversion excursion, is limited. The dynamic navicular mobility in terms of vertical navicular drop ( dNDrop ) and medial navicular drift ( dNDrift ) may be regarded as meaningful clinical indicators to represent overall foot function. This study aimed to develop a minimal approach to measure the two parameters and to examine their intra- and interday reliability during walking...
2018: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/29705172/the-effect-of-arch-drop-on-tibial-rotation-and-tibiofemoral-contact-stress-in-postpartum-women
#16
Kaitlin Rabe, Neil A Segal, Saphia Waheed, Donald D Anderson
BACKGROUND: Women are at higher risk for knee osteoarthritis and numerous other lower limb musculoskeletal disorders. Arch drop during pregnancy and the resultant excessive pronation of the feet may alter loading patterns and contribute to the higher prevalence of knee osteoarthritis in women. OBJECTIVE: To determine the effect of arch drop on tibial rotation and tibiofemoral contact stress. DESIGN: Interventional study with internal control SETTING: Biomechanics laboratory PARTICIPANTS: Eleven postpartum women (age 33...
April 26, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29702048/nerve-transfer-surgery-for-penetrating-upper-extremity-injuries
#17
Efstathios Karamanos, Ilya Rakitin, Sophie Dream, Aamir Siddiqui
CONTEXT: Nerve transfer surgery is an option for repair of penetrating injuries of the upper extremity. In the right setting, it has advantages over tendon transfers and nerve grafting. OBJECTIVE: To review our experience since 2006 of nerve transfer surgery in the upper extremities. DESIGN: We included cases performed to repair penetrating trauma within three months of injury with at least three years' follow-up. MAIN OUTCOME MEASURES: Preoperative and postoperative muscle strength of the affected extremity...
April 9, 2018: Permanente Journal
https://www.readbyqxmd.com/read/29700595/ultrasonographic-reference-values-for-the-median-nerve-at-the-level-of-pronator-teres-muscle
#18
Arash Babaei-Ghazani, Peyman Roomizadeh, Esmaeil Nouri, Golnaz Raeisi, Naseh Yousefi, Mahdieh Asilian-Mahabadi, Mohammad Moeini
PURPOSE: The purpose of this study was to investigate the ultrasonographic reference values for diameters and cross-sectional area (CSA) of the median nerve between the two heads of the pronator teres muscle in healthy population as well as to correlate the findings with height, weight, sex and age. METHODS: Fifty-five healthy Caucasian volunteers (110 median nerves) were included in this study. The reference range (mean ± 2 standard deviations; 2.5th-97.5th quintiles) and the upper limit of side-to-side difference of the median nerve between the two heads of the pronator teres muscle were investigated using high-frequency ultrasound...
April 27, 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29687460/regret-shame-and-denials-of-women-s-voluntary-sterilization
#19
Dianne Lalonde
Women face extraordinary difficulty in seeking sterilization as physicians routinely deny them the procedure. Physicians defend such denials by citing the possibility of future regret, a well-studied phenomenon in women's sterilization literature. Regret is, however, a problematic emotion upon which to deny reproductive freedom as regret is neither satisfactorily defined and measured, nor is it centered in analogous cases regarding men's decision to undergo sterilization or the decision of women to undergo fertility treatment...
April 23, 2018: Bioethics
https://www.readbyqxmd.com/read/29684529/effects-of-wrist-position-on-reciprocal-inhibition-and-cutaneous-reflex-amplitudes-in-forearm-muscles
#20
Yao Sun, E Paul Zehr
In the leg, amplitudes of cutaneous reflexes and reciprocal inhibition are significantly affected by joint and limb position. Comparatively little is known about such modulation in the arm. In this study, amplitudes of reciprocal inhibition (from median nerve stimulation near elbow) and cutaneous reflexes (from median or superficial radial nerve stimulation at the wrist) were measured in forearm muscle extensor carpi radialis with the hand pronated or neutral during graded voluntary activation. Significant correlations with muscle activation were found for reciprocal inhibition and cutaneous reflex amplitudes at both positions...
April 20, 2018: Neuroscience Letters
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