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https://www.readbyqxmd.com/read/28938167/a-method-for-measuring-manual-position-control
#1
Cory Adam Potts, Alexander A Brown, Stanislaw Solnik, David A Rosenbaum
There is no generally accepted method for measuring manual position control. We developed a method for doing so. We asked university students to hold a handle that had one rotational degree of freedom. The angular position of the handle depended on the degree of pronation-supination of the forearm. The subjects' task was to hold the handle as steadily as possible to keep a needle positioned in a pie-shaped target zone on a computer screen. If the needle remained in the zone for 0.5s, the gain of the feedback loop increased; otherwise the gain decreased or remained at the starting value of 1...
September 19, 2017: Acta Psychologica
https://www.readbyqxmd.com/read/28930949/the-blocking-flap-for-ulnar-nerve-instability-after-in-situ-release-technique-and-a-grading-system-of-ulnar-nerve-instability-to-guide-treatment
#2
Peter Tang
In situ ulnar nerve release has been gaining popularity as a simple, effective, and low-morbidity procedure for the treatment of cubital tunnel syndrome. One concern with the technique is how to manage the unstable ulnar nerve after release. It is unclear how much nerve subluxation will lead to problems and surprisingly there is no grading system to assess ulnar nerve instability. I propose such a grading system, as well as a new technique to stabilize the unstable ulnar nerve. The blocking flap technique consists of raising a rectangular flap off the flexor/pronator fascia and attaching it to the posterior subcutaneous flap so that it blocks the nerve from subluxation/dislocation...
September 19, 2017: Techniques in Hand & Upper Extremity Surgery
https://www.readbyqxmd.com/read/28930624/the-relationship-between-ambivalent-and-indifferent-pregnancy-desires-and-contraceptive-use-among-malawian-women
#3
Sarah Huber, Allahna Esber, Sarah Garver, Venson Banda, Alison Norris
CONTEXT: Pregnancy ambivalence and pregnancy indifference are thought to be associated with nonuse of contraceptives, but their conceptualization and measurement vary, and their relationship to contraceptive use in developing countries is poorly understood. METHODS: Data from the Umoyo wa Thanzi research program in rural Lilongwe, Malawi, were used to classify the pregnancy desires of 592 women aged 15-39 as antinatal, pronatal, ambivalent or indifferent, according to both the women's desire to conceive and their desire to avoid pregnancy...
July 5, 2017: International Perspectives on Sexual and Reproductive Health
https://www.readbyqxmd.com/read/28927574/pronator-teres-accessorius-a-new-variant-in-flexor-antebrachial-musculature
#4
S Kumari, P Chauhan, M Kathole, J Arora, R K Suri, M Kohli
Muscles of flexor compartment of forearm have a common origin from medial epicondyle of humerus. Additional bellies of flexor muscles are commonly reported but presence of supernumerary muscles is an infrequent phenomenon. The present study describes an unusual muscle mass in flexor compartment of forearm simulating pronator teres. During routine dissection the upper limb of a 50 years old male cadaver, a supernumerary muscle was found on left side of the upper limb in the flexor compartment. The origin of the muscle was 2cm wide and aponeurotic in nature and attached to an oblique line extending from the inferior surface of the medial epicondyle and the medial surface of the trochlea...
September 15, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28925312/what-is-the-best-treatment-for-displaced-salter-harris-ii-physeal-fractures-of-the-distal-tibia
#5
Hoon Park, Dong Hoon Lee, Seung Hwan Han, Sungmin Kim, Nam Kyu Eom, Hyun Woo Kim
Background and purpose - The optimal treatment of displaced Salter-Harris (SH) II fractures of the distal tibia is controversial. We compared the outcomes of operative and nonoperative treatment of SH II distal tibial fractures with residual gap of >3 mm. Factors that may be associated with the incidence of premature physeal closure (PPC) were analyzed. Patients and methods - We retrospectively reviewed 95 patients who were treated for SH II distal tibial fractures with residual gap of >3 mm after closed reduction...
September 19, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/28922169/app-based-bradykinesia-tasks-for-clinic-and-home-assessment-in-parkinson-s-disease-reliability-and-responsiveness
#6
Dustin A Heldman, Enrique Urrea-Mendoza, Lilia C Lovera, David A Schmerler, Xiomara Garcia, Mohammad E Mohammad, Maria Catalina U McFarlane, Joseph P Giuffrida, Alberto J Espay, Hubert H Fernandez
BACKGROUND: Clinical rating of bradykinesia in Parkinson disease (PD) is challenging as it must combine several movement features into a single score. Additionally, in-clinic assessment cannot capture fluctuations throughout the day. OBJECTIVE: To evaluate the reliability and responsiveness of a motion sensor-based tablet app for objective bradykinesia assessment in clinic and at home as compared to clinical ratings. METHODS: Thirty-two PD patients treated with subthalamic deep brain stimulation (DBS) were outfitted with a motion sensor on the index finger of the more affected hand to perform two repetitions of finger-tapping, hand opening-closing, and arm pronation-supination tasks with DBS on and 10, 20, and 30 minutes after turning DBS off...
September 11, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28917548/volar-capsular-release-after-distal-radius%C3%A2-fractures
#7
Robin N Kamal, David S Ruch
PURPOSE: Loss of full wrist range of motion is common after treatment of distal radius fractures. Loss of wrist extension limiting functional activities, although uncommon, can occur after volar plating of distal radius fractures. Unlike other joints in which capsular release is a common form of treatment for stiffness, this has been approached with caution in the wrist owing to concerns for carpal instability. We tested the null hypothesis that hardware removal and open volar capsular release would not lead to improved upper extremity-specific patient-reported outcome (Disabilities of the Arm, Shoulder, and Hand [DASH] questionnaire)...
September 14, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28904102/stability-of-hand-force-production-i-hand-level-control-variables-and-multi-finger-synergies
#8
Sasha Reschechtko, Mark L Latash
We combined the theory of neural control of movement with referent coordinates and the uncontrolled manifold hypothesis to explore synergies stabilizing the hand action in accurate four-finger pressing tasks. In particular, we tested a hypothesis on two classes of synergies - those among the four fingers and those within a pair of control variables - stabilizing hand action under visual feedback and disappearing without visual feedback. Subjects performed four-finger total force and moment production tasks under visual feedback; the feedback was later partially or completely removed...
September 13, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28901795/clinical-and-radiographic-outcomes-of-unipolar-and-bipolar-radial-head-prosthesis-in-patients-with-radial-head-fracture-a-systemic-review-and-meta-analysis
#9
Hongwei Chen, Ziyang Wang, Yongjun Shang
PURPOSE: To compare clinical outcomes of unipolar and bipolar radial head prosthesis in the treatment of patients with radial head fracture. MATERIALS AND METHODS: Medline, Cochrane, EMBASE, Google Scholar databases were searched until April 18, 2016 using the following search terms: radial head fracture, elbow fracture, radial head arthroplasty, implants, prosthesis, unipolar, bipolar, cemented, and press-fit. Randomized controlled trials, retrospective, and cohort studies were included...
September 13, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28888865/changes-in-foot-posture-during-pregnancy-and-their-relation-with-musculoskeletal-pain-a-longitudinal-cohort-study
#10
Francisco Javier Vico Pardo, Andres López Del Amo, Manuel Pardo Rios, Gabriel Gijon-Nogueron, Cristina Castro Yuste
AIM: To examine foot posture changes during the three trimesters of pregnancy and to determine whether there is a relationship between these changes and the pain experienced in this period. METHODS: The study sample consisted of 62 pregnant women who attended the Gynaecology Service at Hospital ​Santa María del Puerto (Cádiz, Spain), between January 2013 and May 2014. In their first visit, the following sociodemographic and anthropometric data were recorded: age, weight, height and foot size...
September 6, 2017: Women and Birth: Journal of the Australian College of Midwives
https://www.readbyqxmd.com/read/28888571/accuracy-and-early-clinical-outcome-of-3-dimensional-planned-and-guided-single-cut-osteotomies-of-malunited-forearm-bones
#11
Simon Roner, Lazaros Vlachopoulos, Ladislav Nagy, Andreas Schweizer, Philipp Fürnstahl
PURPOSE: To investigate the reduction accuracy of 3-dimensional planned single-cut osteotomies (SCOTs) of the forearm that were performed using patient-specific guides. METHODS: A retrospective analysis of SCOTs performed between 2012 and 2014 was performed. Ten patients (age, 15-59 years) with 6 malunions of the ulna and 6 malunions of the radius were identified. The reduction accuracy was assessed by comparing the 3-dimensional preoperative plan of each osteotomy with the superimposed bone model extracted from postoperative computed tomography data...
September 6, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28880595/lower-leg-and-foot-contributions-to-turnout-in-university-level-female-ballet-dancersa-preliminary-investigation
#12
Sarah L Carter, Alan R Bryant, Luke S Hopper
BACKGROUND: Turnout in ballet is produced through summation of the joint structure characteristics and ranges of motion at the hip, knee, ankle, and foot. Contributions of the hip joint to functional turnout in dancers have received extensive examination, whereas little is known about contributions from the knee, ankle, and foot. The aim of this study was to explore the nonhip components of turnout to dancers' functional turnout in first position by assessing passive external tibiofemoral rotation and active measures of foot pronation, ie, navicular drop and Foot Posture Index...
July 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/28878540/bare-medial-epicondyle-physeal-fracture-of-the-humerus-a-case-report
#13
Takashi Oda, Kenji Watanabe
We identified an unusual case of the medial epiondyle physeal fracture, which has been caused by a direct blow, accompanied with complete stripping of soft tissue. Surgery was performed for open reduction and internal fixation of the medial epicondyle and reattachment of the anterior oblique bundle of medial collateral ligament and flexor muscle origin. Six months after the surgery, strength of wrist flexion and forearm pronation, range of motion and valgus stability of the left elbow had recovered. One year after the injury, radiographs showed atrophy and sclerosis of the medial epicondylar apophysis...
August 2017: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28874673/comparison-of-musculoskeletal-networks-of-the-primate-forelimb
#14
Julia Molnar, Borja Esteve-Altava, Campbell Rolian, Rui Diogo
Anatomical network analysis is a framework for quantitatively characterizing the topological organization of anatomical structures, thus providing a way to compare structural integration and modularity among species. Here we apply this approach to study the macroevolution of the forelimb in primates, a structure whose proportions and functions vary widely within this group. We analyzed musculoskeletal network models in 22 genera, including members of all major extant primate groups and three outgroup taxa, after an extensive literature survey and dissections...
September 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28873879/attenuating-tremor-using-passive-devices
#15
Reuven Katz, Eran Buki, Miriam Zacksenhouse
Limb tremor is treated with either medication or surgery, both of which may have adverse effects. This paper presents two passive devices for tremor attenuation: One for attenuating pronation/supination tremor of the forearm using a dynamic vibration absorber, and the other for attenuating flexion/extension tremor of the hand using a rotational damper.
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28871902/height-of-the-medial-longitudinal-arch-during-classical-ballet-steps
#16
Carolina Cabral de Mello Viero, Luíza Pillar Kessler, Camila Pinto, Kaanda Nabilla Souza Gontijo, Rodrigo Gomes da Rosa, Ana Kleiner, Leonardo Alexandre Peyré-Tartaruga, Alexandre Severo do Pinho, Aline de Souza Pagnussat
The purpose of this study was to evaluate the midfoot longitudinal arch height and correlate it with active hip external rotation (ER) in dancers during static postures and technical steps of classical ballet (i.e., first position, demi-plié, battement fondu à la seconde, pas jeté à la seconde, and grand jeté à la seconde). A 3D motion analysis system was used for kinematic analysis. The arch height was significantly reduced during the battement fondu à la seconde, pas jeté à la seconde, and grand jeté à la seconde when compared to standing (p = 0...
September 15, 2017: Journal of Dance Medicine & Science
https://www.readbyqxmd.com/read/28869062/supination-contractures-in-brachial-plexus-birth-palsy-long-term-upper-limb-function-and-recurrence-after-forearm-osteotomy-or-nonsurgical-treatment
#17
Wieneke P Metsaars, Jan Ferdinand Henseler, Jochem Nagels, Rob G Nelissen
PURPOSE: Forearm osteotomy for supination deformity in brachial plexus birth palsy (BPBP) may lead to improved function of the upper limb. However, recurrence rates are high and limit satisfactory results. METHODS: We reviewed the long-term outcome of the entire upper limb of 22 BPBP patients with a supination contracture who were treated by forearm osteotomy and compared them with an age-matched group that was treated nonsurgically (n = 28). Recurrence was defined as a passive pronation below 30°...
August 28, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28866343/clinical-outcome-of-arthroscopic-treatment-for-posteromedial-elbow-impingement-in-adolescent-baseball-players
#18
Tetsuya Matsuura, Toshiyuki Iwame, Naoto Suzue, Jyoji Iwase, Shunsuke Tamaki, Kenji Yokoyama, Koichi Sairyo
PURPOSE: To evaluate the clinical outcomes of arthroscopic treatment in adolescent baseball players with posteromedial elbow impingement. METHODS: This retrospective study evaluated the clinical outcome of arthroscopic treatment for posteromedial elbow impingement in adolescent baseball players. Patients were eligible for participation if they had undergone surgery at least 2 years earlier and excluded if they had arthritis, loose bodies, osteochondritis dissecans, ulnar collateral ligament tear, flexor/pronator injuries or medial epicondylitis, or nerve problems...
August 30, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28856352/letter-to-the-editor-pronator-teres-myotendinous-tear
#19
Brooks W Ficke, Brent A Ponce
No abstract text is available yet for this article.
July 2017: American Journal of Orthopedics
https://www.readbyqxmd.com/read/28852889/objective-assessment-of-bradykinesia-estimated-from-the-wrist-extension-in-older-adults-and-patients-with-parkinson-s-disease
#20
Amanda Gomes Rabelo, Lucio Pereira Neves, Ana Paula S Paixão, Fábio Henrique Monteiro Oliveira, Luciane Aparecida Pascucci Sande de Souza, Marcus Fraga Vieira, Adriano A Pereira, Adriano O Andrade
Parkinson's disease (PD) presents several motor signs, including tremor and bradykinesia. However, these signs can also be found in other motor disorders and in neurologically healthy older adults. The incidence of bradykinesia in PD is relatively high in all stages of the disorder, even when compared to tremor. Thus, this research proposes an objective assessment of bradykinesia in patients with PD (G PD: 15 older adults with Parkinson's disease, 65.3 ± 9.1 years) and older adults (G HV: 12 healthy older adults, 60...
August 29, 2017: Annals of Biomedical Engineering
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