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https://www.readbyqxmd.com/read/29409274/proximal-oblique-metatarsal-osteotomy-for-hallux-valgus-using-a-plantar-locking-plate
#1
Seiya Ohzawa, Makoto Kubota
BACKGROUND: The purpose of this retrospective study was to evaluate the clinical and radiological results of hallux valgus surgery using a plantar locking plate. METHODS: Proximal oblique metatarsal osteotomy combined with distal soft tissue treatment was performed in 59 adult patients (68 feet) with hallux valgus, using an anatomically pre-contoured plantar locking plate for fixation of the osteotomy. The median age was 64.0 years and the median follow-up period was 16...
June 17, 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29409209/preliminary-results-of-a-plantar-plate-for-lapidus-arthrodesis
#2
N Gutteck, P Savov, M Panian, D Wohlrab, A Zeh, K S Delank
The TMT I arthrodesis is an established procedure for the correction of hallux valgus deformity associated with the instability of the TMT-I joint. A risk of transfer metatarsalgia is reported in the literature associated with persistant elevation of MT-I. Detailed information for ideal positioning of the arthrodesis is missing so far. Clinical, radiological and padobarografical results and their correlations were analyzed with special consideration of the elevation position of the MT-I in a TMT-I arthrodesis using the plantar plate osteosynthesis...
April 25, 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29397998/comparison-of-lower-limb-kinetics-kinematics-and-muscle-activation-during-drop-jumping-under-shod-and-barefoot-conditions
#3
Keiji Koyama, Junichiro Yamauchi
This study was to investigate the acute effects of wearing shoes on lower limb kinetics, kinematics and muscle activation during a drop jump. Eighteen healthy men performed a drop jump under barefoot and shod conditions. Vertical ground reaction force (GRF) was measured on a force plate during the contact phase of a drop jump, and GRF valuables were calculated for each condition. The angles of the knee and ankle joints, and the foot strike angle (the angle between the plantar surface of the foot and the ground during ground contact) as well as the electromyography of 7 muscles were measured...
January 12, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29396468/alterations-of-pregnant-gait-during-pregnancy-and-post-partum
#4
Qichang Mei, Yaodong Gu, Justin Fernandez
Physique changes during pregnancy lead to gait characteristic variations. This study aimed to analyse gait of pregnant individuals throughout pregnancy and post-partum. Sixteen healthy pregnant women volunteered as participants and had their lower limb kinematics analysed through a VICON three-dimensional motion system and plantar pressure measured with a Novel EMED force plate. Significant changes were observed in pelvic anterior motion, hip and ankle joint kinematics. Mean pressure distribution and COP trajectory deviation altered accordingly with increased pregnancy time, compared with post-partum...
February 2, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29389857/estimation-of-foot-plantar-center-of-pressure-trajectories-with-low-cost-instrumented-insoles-using-an-individual-specific-nonlinear-model
#5
Xinyao Hu, Jun Zhao, Dongsheng Peng, Zhenglong Sun, Xingda Qu
Postural control is a complex skill based on the interaction of dynamic sensorimotor processes, and can be challenging for people with deficits in sensory functions. The foot plantar center of pressure (COP) has often been used for quantitative assessment of postural control. Previously, the foot plantar COP was mainly measured by force plates or complicated and expensive insole-based measurement systems. Although some low-cost instrumented insoles have been developed, their ability to accurately estimate the foot plantar COP trajectory was not robust...
February 1, 2018: Sensors
https://www.readbyqxmd.com/read/29374967/association-between-second-metatarsal-length-and-forefoot-loading-under-the-second-metatarsophalangeal-joint
#6
Adam E Fleischer, Shenche Hshieh, Ryan T Crews, Brett J Waverly, Jacob M Jones, Erin E Klein, Lowell Weil, Lowell Scott Weil
BACKGROUND: Metatarsal length is believed to play a role in plantar plate dysfunction, although the mechanism through which progressive injury occurs is still uncertain. We aimed to clarify whether length of the second metatarsal was associated with increased plantar pressure measurements in the forefoot while walking. METHODS: Weightbearing radiographs and corresponding pedobarographic data from 100 patients in our practice walking without a limp were retrospectively reviewed...
January 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29362028/lesser-metatarsophalangeal-joint-instability-advancements-in-plantar-plate-reconstruction
#7
REVIEW
Raymond Y Hsu, Alexej Barg, Florian Nickisch
The plantar plate and associated collateral ligaments are the main stabilizers of each of the lesser metatarsophalangeal joints. Although clinical examination and plain radiographs are usually sufficient to establish the diagnosis of a plantar plate tear, MRI or fluoroscopic arthrograms may help in specific cases. Recent results with a dorsal approach to plantar plate repair are promising with respect to pain relief and patient satisfaction.
March 2018: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/29362026/anatomy-and-physiology-of-the-lesser-metatarsophalangeal-joints
#8
REVIEW
Fred T Finney, Ezequiel Cata, James R Holmes, Paul G Talusan
Knowledge and command of anatomy is paramount to effectively treating disorders of the lesser metatarsophalangeal (MTP) joints. The osseous structures consist of the proximal phalanx of the toe and the metatarsal head. The soft tissues on the dorsum of the MTP joint include the joint capsule and the tendons of extensor digitorum longus and extensor digitorum brevis. The proper and accessory collateral ligaments form the medial and lateral walls and contribute to stability in the coronal and sagittal planes...
March 2018: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/29281812/dynamic-joint-stiffness-of-the-ankle-in-healthy-and-rheumatoid-arthritis-post-menopausal-women
#9
Pedro Aleixo, José Vaz-Patto, Helena Moreira, João Abrantes
The purpose of this study was to compare rheumatoid arthritis post-menopausal women (RAPW) with pathological involvement of the lower limb joints and age-matched healthy post-menopausal women (AHPW) in regard to the dynamic joint stiffness of the ankle (DJSankle) during the stance phase of gait. Data were collected from 18 RAPW and 18 AHPW. Gait was assessed by a three-dimensional motion analysis system synchronised with a force plate. Subjects walked barefoot at natural and self-selected speed, performing 14 valid trials (comprising 7 left and 7 right foot-steps on a force plate)...
December 13, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29274925/role-of-complement-anaphylatoxin-receptors-in-a-mouse-model-of-acute-burn-induced-pain
#10
Michael Morgan, Jennifer R Deuis, Trent M Woodruff, Richard J Lewis, Irina Vetter
The complement system is an essential component of the innate immune response. The anaphylatoxins C3a and C5a are key drivers of the complement system, acting through the receptors C3aR, C5aR1 and C5aR2 to regulate inflammation. While a role for C5a activation of C5aR1 in inflammatory and neuropathic pain has been established, the role of the complement system in burn-induced pain has not been investigated. To address this gap, we assessed the role of complement receptors C3aR, C5aR1 and C5aR2 in a mouse model of acute burn-induced pain...
December 21, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/29202986/arthrodesis-of-the-first-metatarsophalangeal-joint-a-biomechanical-comparison-of-four-fixation-techniques
#11
Ella Harris, Paul Moroney, Yves Tourné
BACKGROUND: Arthrodesis of the first metatarsophalangeal joint is a commonly performed orthopaedic procedure. The optimum method of fixation and joint surface preparation has yet to be determined. METHODS: This study compared four fixation techniques: Biomechanical grade sawbones were used. The dorsal plate used was a titanium, anatomically contoured locked plate. Testing was performed using an Instron machine applying force from the plantar aspect of the fused joint...
December 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29201305/biomechanical-comparison-study-of-three-fixation-methods-for-proximal-chevron-osteotomy-of-the-first-metatarsal-in-hallux-valgus
#12
Jin Su Kim, Hun Ki Cho, Ki Won Young, Ji Soo Kim, Kyung Tai Lee
Background: Fixation of proximal chevron metatarsal osteotomy has been accomplished using K-wires traditionally and with a locking plate recently. However, both methods have many disadvantages. Hence, we developed an intramedullary fixation technique using headless cannulated screws and conducted a biomechanical study to evaluate the superiority of the technique to K-wire and locking plate fixations. Methods: Proximal chevron metatarsal osteotomy was performed on 30 synthetic metatarsal models using three fixation techniques...
December 2017: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/29122282/masquelet-technique-with-external-locking-plate-for-recalcitrant-distal-tibial-nonunion
#13
Ching-Hou Ma, Yen-Chun Chiu, Kun-Ling Tsai, Yuan-Kun Tu, Cheng-Yo Yen, Chin-Hsien Wu
OBJECTIVE: In the present retrospective study, we aimed to analyze the results of treatment for recalcitrant distal tibial nonunion using Masquelet technique with locking plate as a definitive external fixator. MATERIALS: We included 15 consecutive cases of distal tibial nonunion treated at our hospital between January 2012 and December 2015. The reconstructive procedure comprised debridement of the nonunion site, deformity correction, stabilization with an external locked plate, defect filling with cement spacer for inducing membrane formation, and bone reconstruction using a cancellous bone autograft (Masquelet technique)...
December 2017: Injury
https://www.readbyqxmd.com/read/29091881/phytochemical-profile-and-mechanisms-involved-in-the-anti-nociception-caused-by-the-hydroethanolic-extract-obtained-from-tocoyena-formosa-cham-schltdl-k-schum-jenipapo-bravo-leaves-in-mice
#14
Francisco Rafael Alves Santana Cesário, Thaís Rodrigues de Albuquerque, Giovana Mendes de Lacerda, Maria Rayane Correia de Oliveira, Lindaiane Bezerra Rodrigues, Anita Oliveira Brito Pereira Bezerra Martins, Aline Augusti Boligon, Lucindo José Quintans Júnior, Adriano Antunes de Souza Araújo, Mariana Lima Vale, Henrique Douglas Melo Coutinho, Irwin Rose Alencar de Menezes
Tocoyena formosa, a small ornamental tree growing in the dry regions of central Brazil, is commonly known as 'genipapo do bravo'. This is a medicinal plant traditionally used as an analgesic for rheumatic pain, lower back pain and myalgia, however its use is carried out without scientific evidence, which thus justifies the development of studies to investigate and prove its therapeutic potential. Therefore, the objective of this study was to evaluate the phytochemical profile of Tocoyena formosa (Cham. & Schlecht...
October 26, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28893531/a-systematic-review-of-plantar-plate-repair-in-the-management-of-lesser-metatarsophalangeal-joint-instability
#15
REVIEW
Mohammed Elmajee, Zhiyu Shen, Jamie A'Court, Anand Pillai
The plantar plate is a major structure that maintains metatarsophalangeal joint (MTPJ) stability and has only recently gained attention. Anatomic plantar plate repair can directly address the pathologic entity, rather than relying on indirect reduction of the MTPJ instability by osteotomy or tendon transfer techniques. The present report aimed to determine the effectiveness of plantar plate repair for the treatment of patients with lesser MTPJ instability. Different databases were searched using the guidelines in the Cochrane Handbook and recommendations from the Preferred Reporting Items for Systematic reviews and Meta-Analysis statement...
November 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28800708/multiplanar-correction-of-the-lesser-digital-deviation-and-indirect-plantar-plate-rupture-repair-using-a-braided-polyethylene-nylon-suture-a-technique-guide
#16
Cody D Blazek, Roberto A Brandão, Jeffrey M Manway, Patrick R Burns
Forefoot and lesser digital pathology continues to be a challenging area of surgical correction for foot and ankle surgeons. Many techniques for the correction of digital deformities secondary to plantar plate rupture, regardless of planal dominance, have been described including direct repair and metatarsal shortening osteotomies for repair. The authors present a new technique for multiplanar correction of deformed lesser digits without direct repair of the plantar plate rupture utilizing a specialty suture...
August 1, 2017: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/28800707/radiographic-results-and-return-to-activity-after-sesamoidectomy-for-fracture
#17
Justin M Kane, James W Brodsky, Yahya Daoud
BACKGROUND: Limited data are available comparing the results of lateral sesamoidectomy and medial sesamoidectomy for the treatment of fractures recalcitrant to nonoperative treatment interventions. The hypothesis of this study was that sesamoidectomy for either lateral or medial sesamoid fractures would not change radiographic alignment of the first ray given the use of identical reconstruction of the plantar plate, intersesamoid ligament, and plantar ligament complex at the time of surgery...
October 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28763715/adding-an-arch-support-to-a-heel-lift-improves-stability-and-comfort-during-gait
#18
Xianyi Zhang, Bo Li, Kun Hu, Qiufeng Wan, Yuhao Ding, Benedicte Vanwanseele
Heel lifts have been widely used as a conservative treatment for some musculoskeletal problems and complaints. However, the heel rise caused by heel lifts may also affect the plantar pressure distribution and stability during walking. This study aimed to test whether adding an arch support to a heel lift would improve its stability and comfort through comparing the center of pressure (COP) during walking and subjective ratings between heel lifts with and without an arch support. Fifteen healthy male participants were asked to walk along an 8m walkway while wearing high-cut footwear with the control heel lifts and the heel lifts with an arch support...
October 2017: Gait & Posture
https://www.readbyqxmd.com/read/28761792/plantar-pressure-distribution-of-ostrich-during-locomotion-on-loose-sand-and-solid-ground
#19
Rui Zhang, Dianlei Han, Songsong Ma, Gang Luo, Qiaoli Ji, Shuliang Xue, Mingming Yang, Jianqiao Li
BACKGROUND: The ostrich is a cursorial bird with extraordinary speed and endurance, especially in the desert, and thus is an ideal large-scale animal model for mechanic study of locomotion on granular substrate. METHODS: The plantar pressure distributions of ostriches walking/running on loose sand/solid ground were recorded using a dynamic pressure plate. RESULTS: The center of pressure (COP) on loose sand mostly originated from the middle of the 3rd toe, which differed from the J-shaped COP trajectory on solid ground...
2017: PeerJ
https://www.readbyqxmd.com/read/28743301/loading-pattern-of-postoperative-hallux-valgus-feet-with-and-without-transfer-metatarsalgia-a-case-control-study
#20
Xiang Geng, Dichao Huang, Xu Wang, Chao Zhang, Jiazhang Huang, Xin Ma, Li Chen, Chen Wang, Junsheng Yang, Heng Wang
BACKGROUND: Postoperative transfer metatarsalgia is a common complication after hallux valgus surgeries. Shortening of the first metatarsal is traditionally thought to be the primary cause of it. However, we speculate the abnormal loading pattern during gait is the real reason. This study is to determine specific differences in the loading patterns between reconstructive hallux valgus (HV) feet with and without postoperative transfer metatarsalgia, so as to find risky loading characteristics of this complication...
July 25, 2017: Journal of Orthopaedic Surgery and Research
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