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https://www.readbyqxmd.com/read/28643550/hip-joint-kinetics-in-the-table-tennis-topspin-forehand-relationship-to-racket-velocity
#1
Yoichi Iino
The purpose of this study was to determine hip joint kinetics during a table tennis topspin forehand, and to investigate the relationship between the relevant kinematic and kinetic variables and the racket horizontal and vertical velocities at ball impact. Eighteen male advanced table tennis players hit cross-court topspin forehands against backspin balls. The hip joint torque and force components around the pelvis coordinate system were determined using inverse dynamics. Furthermore, the work done on the pelvis by these components was also determined...
June 23, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28643147/the-perioperative-surgical-home-improving-the-value-and-quality-of-care-in-total-joint-replacement
#2
REVIEW
George F Chimento, Leslie C Thomas
PURPOSE OF REVIEW: The perioperative surgical home (PSH) is a patient-centered, physician-led, multidisciplinary care pathway developed to deliver value-based care based on shared decision-making. Physician and hospital reimbursement will be tied to providing quality care at lower cost, and the PSH model has been used in providing care to patients undergoing lower extremity arthroplasty. The purpose of this review is to discuss the rationale, definition, development, current state, and future direction of the PSH...
June 22, 2017: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/28642256/revision-for-prosthetic-joint-infection-following-hip-arthroplasty-evidence-from-the-national-joint-registry
#3
E Lenguerrand, M R Whitehouse, A D Beswick, S A Jones, M L Porter, A W Blom
OBJECTIVES: We used the National Joint Registry for England, Wales, Northern Ireland and the Isle of Man (NJR) to investigate the risk of revision due to prosthetic joint infection (PJI) for patients undergoing primary and revision hip arthroplasty, the changes in risk over time, and the overall burden created by PJI. METHODS: We analysed revision total hip arthroplasties (THAs) performed due to a diagnosis of PJI and the linked index procedures recorded in the NJR between 2003 and 2014...
June 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28642097/are-two-dimensional-measured-frontal-plane-angles-related-to-three-dimensional-measured-kinematic-profiles-during-running
#4
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/28641973/changes-in-hip-knee-and-ankle-coronal-alignments-after-total-hip-arthroplasty-with-transverse-femoral-shortening-osteotomy-for-unilateral-crowe-type-iv-developmental-dysplasia-of-the-hip
#5
Abdulhamit Misir, Turan B Kizkapan, Kadir I Yildiz, Mehmet A Kaygusuz, Yakup Alpay, Atakan Ezici
BACKGROUND: To investigate changes in lower extremity coronal alignment in patients with unilateral Crowe type IV developmental dysplasia of the hip who underwent total hip arthroplasty with transverse femoral shortening osteotomy. METHODS: We reviewed the preoperative and 1-year postoperative full-length lower extremity radiographs of 25 patients. Femoral offset (FO), mechanical hip-knee-ankle angle, anatomical axis, mechanical axis deviation (MAD), mechanical lateral proximal femoral angle, anatomical medial proximal femoral angle, mechanical lateral distal femoral angle, anatomical lateral distal femoral angle, knee joint line congruency angle, mechanical medial proximal tibial angle, mechanical lateral distal tibial angle, ankle joint line orientation angle, tibial plafond talus angle, extremity length, and pelvic obliquity were measured on both the operative and nonoperative sides...
June 1, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28641969/determining-3d-kinematics-of-the-hip-using-video-fluoroscopy-guidelines-for-balancing-radiation-dose-and-registration-accuracy
#6
Fabio D'Isidoro, Patrik Eschle, Thomas Zumbrunn, Christian Sommer, Stephan Scheidegger, Stephen J Ferguson
BACKGROUND: Video fluoroscopy is a technique currently used to retrieve the in vivo three-dimensional kinematics of human joints during activities of daily living. Minimization of the radiation dose absorbed by the subject during the measurement is a priority and has not been thoroughly addressed so far. This issue is critical for the motion analysis of the hip joint, because of the proximity of the gonads. The aims of this study were to determine the x-ray voltage and the irradiation angle that minimize the effective dose and to achieve the best compromise between delivered dose and accuracy in motion retrieval...
May 25, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28641199/influence-of-weight-bearing-visual-feedback-on-movement-symmetry-during-sit-to-stand-task
#7
Sumayeh Abujaber, Federico Pozzi, Joseph Zeni
BACKGROUND: Weight-bearing asymmetry is common in individuals with hip osteoarthritis and after total hip arthroplasty. Including symmetry training to the rehabilitation programs may normalize movement strategies during dynamic tasks. The purpose of this study was to evaluate the immediate influences of real-time visual feedback of weight distribution on the interlimb movement symmetry during the sit-to-stand task, before and after total hip arthroplasty, and to determine whether physical impairments affect the response to visual feedback...
June 8, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28641160/effects-of-hip-joint-centre-mislocation-on-gait-kinematics-of-children-with-cerebral-palsy-calculated-using-patient-specific-direct-and-inverse-kinematic-models
#8
Hans Kainz, Christopher P Carty, Sheanna Maine, Henry P J Walsh, David G Lloyd, Luca Modenese
Joint kinematics can be calculated by Direct Kinematics (DK), which is used in most clinical gait laboratories, or Inverse Kinematics (IK), which is mainly used for musculoskeletal research. In both approaches, joint centre locations are required to compute joint angles. The hip joint centre (HJC) in DK models can be estimated using predictive or functional methods, while in IK models can be obtained by scaling generic models. The aim of the current study was to systematically investigate the impact of HJC location errors on lower limb joint kinematics of a clinical population using DK and IK approaches...
June 4, 2017: Gait & Posture
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
#9
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/28640086/diagnostic-value-of-18f-fluorodeoxyglucose-uptake-parameters-to-differentiate-rheumatoid-arthritis-from-other-types-of-arthritis
#10
Anu Bhattarai, Takahito Nakajima, Santosh Sapkota, Yukiko Arisaka, Azusa Tokue, Yukio Yonemoto, Yoshito Tsushima
We aimed evaluate F-fluorodeoxyglucose uptake at major joints for differentiating patients with rheumatoid arthritis (RA) from those with non-RA arthritis using F-fluorodeoxyglucose (FDG)-positron emission tomography (PET).Eighteen patients with RA (13 women; age, 66.8 ± 13.2 years) and 17 patients with non-RA (6 women; age, 50.8 ± 12.5 years) were included. Twelve joints of each patient were examined: shoulder, elbow, wrist, hip, knee, and ankle on both sides. A visual scoring (VS) system was used; quantitative parameters such as maximum standardized uptake value (SUVmax), metabolic active volume (MAV), and total lesion glycolysis (TLG) were evaluated...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28639442/weightbearing-ankle-dorsiflexion-range-of-motion-and-sagittal-plane-kinematics-during-single-leg-drop-jump-landing-in-healthy-male-athletes
#11
Brittany Dowling, April L McPherson, James M Paci
BACKGROUND: Passive ankle dorsiflexion range of motion (DROM) measures have been identified as a risk factor for injury during landings. However, passive measurements might not be indicative of dynamic ankle movement, whereas a weightbearing ROM might be a better tool when evaluating movement. The purpose of this study was to investigate the relationship between weightbearing DROM and sagittal plane landing mechanics in a single leg drop jump task. METHODS: 73 male athletes (22...
June 21, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28639152/influence-of-muscle-groups-activation-on-proximal-femoral-growth-tendency
#12
Priti Yadav, Sandra J Shefelbine, Eva Pontén, Elena M Gutierrez-Farewik
Muscle and joint contact force influence stresses at the proximal growth plate of the femur and thus bone growth, affecting the neck shaft angle (NSA) and femoral anteversion (FA). This study aims to illustrate how different muscle groups' activation during gait affects NSA and FA development in able-bodied children. Subject-specific femur models were developed for three able-bodied children (ages 6, 7, and 11 years) using magnetic resonance images. Contributions of different muscle groups-hip flexors, hip extensors, hip adductors, hip abductors, and knee extensors-to overall hip contact force were computed...
June 22, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28638690/an-unusual-case-of-diffuse-pigmented-villonodular-synovitis-of-the-shoulder-a-multidisciplinary-approach-with-arthroscopic-synovectomy-and-adjuvant-radiotherapy
#13
Tânia Quinás Serra, João Morais, Zico Gonçalves, Francisco Agostinho, Gilberto Melo, Mónica Henriques
Pigmented villonodular synovitis (PVNS) is a rare proliferative disorder of the synovial membrane. This condition is usually monoarticular, can be locally destructive, and involves muscles, tendons, bursae, bones, and skin. The most commonly affected joints are the knee and hip, followed by the ankle and shoulder. Patients often present with pain, swelling, and joint effusion; however, the duration of symptoms varies. Total synovectomy is the preferred treatment for PVNS. Subtotal synovectomy is a factor of recurrence, and in diffuse PVNS, total excision is very difficult to achieve...
June 2017: European Journal of Rheumatology
https://www.readbyqxmd.com/read/28636252/influence-of-analyzed-lubricant-volumes-on-the-amount-and-characteristics-of-generated-wear-particles-from-three-different-types-of-polyethylene-liner-materials
#14
Jana Markhoff, Carmen Zietz, Christian Fabry, Gerhard Fulda, Rainer Bader
The articulating components of artificial joints consist mainly of metals, ceramics, or polymers. Resulting abrasive wear particles can promote osteolysis and aseptic loosening of the endo-prosthetic implants. Ultra-high-molecular-weight-polyethylene is the material used most for bearing couples in total hip replacement. In the present study, three types of polyethylene (PE) liners varying in material composition, i.e., (1) conventional PE (C-PE), (2) sequentially cross-linked PE (SX-PE), (3) cross-linked PE blended with vitamin E (EX-PE) articulating with two types of femoral heads were used...
June 21, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28634785/-imaging-and-preoperative-planning-for-osteotomies-around-the-knee
#15
REVIEW
D Pape, A Hoffmann, R Seil
Physiologic alignment of the human lower leg is well defined. The etiology for malalignment comprises constitutional, degenerative and posttraumatic conditions. Osteotomies around the knee can correct the malalignment, provided that the origin of deviation is in proximity of the knee center. Crucial factors for the evaluation of axis deviation are the weight-bearing line, the mechanical axes of femur and tibia, the joint line angles and the center of the hip, knee and upper ankle joint. Careful preoperative planning is mandatory for reproducible clinical results...
June 20, 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28634094/regional-anesthesia-in-total-joint-arthroplasty-what-is-the-evidence
#16
Dalia H Elmofty, Asokumar Buvanendran
Total joint arthroplasty is one of the most common surgical procedures performed for end-stage osteoarthritis. The increasing demand for knee and hip arthroplasties along with the improvement in life expectancy has created a substantial medical and economic impact on the society. Effective planning of health care for these individuals is vital. The best method for providing anesthesia and analgesia for total joint arthroplasty has not been defined. Yet, emerging evidence suggests that the type of anesthesia can affect morbidity and mortality of patients undergoing these procedures...
May 18, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28632776/dynamic-knee-valgus-alignment-influences-impact-attenuation-in-the-lower-extremity-during-the-deceleration-phase-of-a-single-leg-landing
#17
Akihiro Tamura, Kiyokazu Akasaka, Takahiro Otsudo, Jyunya Shiozawa, Yuka Toda, Kaori Yamada
Dynamic knee valgus during landings is associated with an increased risk of non-contact anterior cruciate ligament (ACL) injury. In addition, the impact on the body during landings must be attenuated in the lower extremity joints. The purpose of this study was to investigate landing biomechanics during landing with dynamic knee valgus by measuring the vertical ground reaction force (vGRF) and angular impulses in the lower extremity during a single-leg landing. The study included 34 female college students, who performed the single-leg drop vertical jump...
2017: PloS One
https://www.readbyqxmd.com/read/28632602/visits-to-the-emergency-department-after-joint-replacement-commentary-on-an-article-by-micaela-a-finnegan-ba-et-al-emergency-department-visits-following-elective-total-hip-and-knee-replacement-surgery-identifying-gaps-in-continuity-of-care
#18
https://www.readbyqxmd.com/read/28632589/emergency-department-visits-following-elective-total-hip-and-knee-replacement-surgery-identifying-gaps-in-continuity-of-care
#19
Micaela A Finnegan, Robyn Shaffer, Austin Remington, Jereen Kwong, Catherine Curtin, Tina Hernandez-Boussard
BACKGROUND: Major joint replacement surgical procedures are common, elective procedures with a care episode that includes both inpatient readmissions and postoperative emergency department (ED) visits. Inpatient readmissions are well studied; however, to our knowledge, little is known about ED visits following these procedures. We sought to characterize 30-day ED visits following a major joint replacement surgical procedure. METHODS: We used administrative records from California, Florida, and New York, from 2010 through 2012, to identify adults undergoing total knee and hip arthroplasty...
June 21, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28632588/survivorship-and-outcomes-10-years-following-hip-arthroscopy-for-femoroacetabular-impingement-labral-debridement-compared-with-labral-repair
#20
Travis J Menge, Karen K Briggs, Grant J Dornan, Shannen C McNamara, Marc J Philippon
BACKGROUND: Studies have demonstrated hip arthroscopy to be an effective treatment for femoroacetabular impingement (FAI) with associated labral tears. The purposes of this study were to report 10-year outcomes and hip survival following hip arthroscopy for FAI and to compare labral debridement with labral repair. METHODS: Prospectively collected data on patients followed for a minimum of 10 years after hip arthroscopy for FAI with either labral debridement or labral repair performed by a single surgeon were retrospectively analyzed...
June 21, 2017: Journal of Bone and Joint Surgery. American Volume
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