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Flexor digitorum superficialis

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https://read.qxmd.com/read/30783716/single-finger-movements-in-the-aging-hand-changes-in-finger-independence-muscle-activation-patterns-and-tendon-displacement-in-older-adults
#1
Nathalie Van Beek, Dick F Stegeman, Ilse Jonkers, Chris L de Korte, DirkJan Veeger, Huub Maas
With aging, hand mobility and manual dexterity decline, even under healthy circumstances. To assess how aging affects finger movement control, we compared elderly and young subjects with respect to (1) finger movement independence, (2) neural control of extrinsic finger muscles and (3) finger tendon displacements during single finger flexion. In twelve healthy older (age 68-84) and nine young (age 22-29) subjects, finger kinematics were measured to assess finger movement enslaving and the range of independent finger movement...
February 19, 2019: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://read.qxmd.com/read/30760158/sliding-position-of-the-flexor-tendons-relative-to-the-hook-of-hamate-in-ct-scans
#2
Kenji Goto, Kiyohito Naito, Yoichi Sugiyama, Nana Nagura, Ayaka Kaneko, Yoshiyuki Iwase, Kazuo Kaneko
BACKGROUND: The aim of this study was to assess the height of nonunion formation injuring the ulnar-side finger flexor tendon, the positional relationship between the hook of the hamate and little finger flexor tendon was evaluated on CT scans. METHODS: The subjects were 20 healthy patients (40 hands) (14 males and 6 females, mean age: 28 years old). Their hands were imaged in extension and flexion of the fingers on CT. The position of the little finger flexor tendon was determined regarding the height of the hook of the hamate as 100%...
March 2019: Journal of Hand Surgery Asian-Pacific Volume
https://read.qxmd.com/read/30721754/effects-of-finger-taping-on-forearm-muscle-activation-in-rock-climbers
#3
Brynne Dykes, Julianna Johnson, Jun G San Juan
Flexor tendon pulley injury is associated with a change in relative activation of the flexor digitorum superficialis (FDS) and flexor digitorum profundus (FDP) muscles. The purpose of this study was to determine the effect of taping of the fingers on relative muscle activation of the FDS and FDP muscles in uninjured rock climbers. Muscle activation in 10 healthy volunteers were recorded using intramuscular electromyography (EMG) during a static hang with subjects utilizing the crimp grip without tape, with a circumferential tape and with an H-tape in random order...
January 28, 2019: Journal of Electromyography and Kinesiology
https://read.qxmd.com/read/30708121/closed-disruption-of-a-single-flexor-digitorum-superficialis-tendon-slip-3-cases
#4
A Schweizer, T Bayer
Two men and one woman (age 31, 36 and 45 years) felt a painful pop in the left middle, right middle and right index finger during sport-related activities (2 sport climbing and 1 judo). Clinical examination found a painful flexor tendon in zone 2 but no function deficit specific to the flexor digitorum superficialis (FDS) tendon. MRI and ultrasonography revealed a complete disruption of the radial FDS tendon slip only, which was found retracted between the A2 and A3 pulleys. All flexor tendon pulleys remained intact...
January 29, 2019: Hand Surgery and Rehabilitation
https://read.qxmd.com/read/30689100/changes-in-blood-lactate-and-muscle-activation-in-elite-rock-climbers-during-a-15-m-speed-climb
#5
Feng Guo, Qingfu Wang, Yuanlong Liu, Nicholas J Hanson
PURPOSE: The purpose of this study was to investigate the changes in blood lactate concentration (BL) and muscle activity patterns during a 15-m speed climbing competition that consisted of ten consecutive climbing actions on a standardized artificial wall in trained rock climbers. METHODS: Twelve trained rock climbers participated in this study. Surface electromyography (sEMG) and video signals were synchronized and recorded during climbing. The blood lactate was also tested 3 min after completing the climb...
January 28, 2019: European Journal of Applied Physiology
https://read.qxmd.com/read/30680050/fibroma-of-the-tendon-sheath-arising-from-the-flexor-digitorum-superficialis-tendon
#6
Mary M Jordan, Ryan Accomazzo, Gabriel Gaweda, Richard S Zeri, Tom Reisler
No abstract text is available yet for this article.
2019: Eplasty
https://read.qxmd.com/read/30656257/pseudo-volkmann-contracture-a-case-report-and-review-of-the-current-literature
#7
REVIEW
Jacqueline Geissler, Jerald Westberg, Milan Stevanovic
Background: Unlike the usual Volkmann contracture as a complication of pediatric forearm fracture, pseudo-Volkmann contracture is not a sequela of ischemia, but rather of a mechanical entrapment of the flexor myotendinous units in the fracture or adhesions. Methods: PubMed search of the English literature was performed using the terminology entrapment and fracture and pseudo-Volkmann. Results: Thirteen articles were identified that described cases of pseudo-Volkmann contracture in pediatric both-bone forearm fractures...
November 2018: Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews
https://read.qxmd.com/read/30632511/reinnervation-of-spinal-cord-anterior-horn-cells-after-median-nerve-repair-using-transposition-with-other-nerves
#8
Yu-Song Yuan, Su-Ping Niu, You-Lai Yu, Pei-Xun Zhang, Xiao-Feng Yin, Na Han, Ya-Jun Zhang, Dian-Ying Zhang, Hai-Lin Xu, Yu-Hui Kou, Bao-Guo Jiang
Our previous studies have confirmed that during nerve transposition repair to injured peripheral nerves, the regenerated nerve fibers of motor neurons in the anterior horn of the spinal cord can effectively repair distal nerve and target muscle tissue and restore muscle motor function. To observe the effect of nerve regeneration and motor function recovery after several types of nerve transposition for median nerve defect (2 mm), 30 Sprague-Dawley rats were randomly divided into sham operation group, epineurial neurorrhaphy group, musculocutaneous nerve transposition group, medial pectoral nerve transposition group, and radial nerve muscular branch transposition group...
April 2019: Neural Regeneration Research
https://read.qxmd.com/read/30630296/anomalous-muscles-of-the-wrist-encountered-during-endoscopic-carpal-tunnel-surgery
#9
Se-Hyuck Park
OBJECTIVE: Anomalous muscles of the wrist are infrequently encountered during carpal tunnel surgery. Anatomic variants of the palmaris longus (PL), flexor digitorum superficialis, lumbricalis and abductor digiti minimi (ADM) have been reported but are usually clinically insignificant. Anomalies of the wrist muscles, encountered during endoscopic carpal tunnel surgery have rarely been described. I conducted this study to evaluate muscular anomalies of the volar aspect of the wrist, encountered during endoscopic carpal tunnel surgery...
January 2019: Journal of Korean Neurosurgical Society
https://read.qxmd.com/read/30608439/trigger-finger-secondary-to-a-neglected-flexor-tendon-rupture
#10
COMPARATIVE STUDY
Malrey Lee, Young-Ran Jung, Young-Keun Lee
Secondary trigger finger caused by trauma to the hand, especially associated with partial flexor tendon rupture, is not a common condition. Thus, the clinical manifestations of these patients are not well-known. The aim of this study is to present secondary trigger finger caused by a neglected partial flexor tendon rupture including discussion of the mechanism and treatment.We retrospectively reviewed the records of 6 patients with trigger finger caused by a neglected partial flexor tendon rupture who had been treated with exploration, debridement, and repairing of the ruptured tendon from August 2010 to May 2015...
January 2019: Medicine (Baltimore)
https://read.qxmd.com/read/30570563/a-test-for-the-clinical-evaluation-of-the-flexor-digitorum-superficialis-of-the-fifth-finger
#11
Everardo Valdés-Flores, Edgar García-Álvarez, Mauricio M García-Pérez, Yanko Castro-Govea, Alejandro Santos-Ibarra, Hernán Chacón-Martínez, Lizbeth Betancourt-Espericueta, Gabriel A Mecott
Physical examination is essential in diagnosing tendinous lesions. This is particularly true of the flexor digitorum superficialis of the little finger (FDS5), which is functionally absent in approximately 30% of the population. The objective of our study was to determine the diagnostic value of 3 clinical tests commonly used to assess the function of this tendon. METHODS: Patients with wounds of the FDS5 were included in this study. Under local or regional anesthesia, 3 described clinical tests were performed to assess the function of the FDS5: (i) the classic test; (ii) Stein's modified test, and (iii) Mecott's modified test...
February 2019: Annals of Plastic Surgery
https://read.qxmd.com/read/30559682/disrupt-of-intra-limb-apa-pattern-in-parkinsonian-patients-performing-index-finger-flexion
#12
Francesco Bolzoni, Roberto Esposti, Silvia M Marchese, Nicoló G Pozzi, Uri E Ramirez-Pasos, Ioannis U Isaias, Paolo Cavallari
Voluntary movements induce postural perturbations which are counteracted by anticipatory postural adjustments (APAs). These actions are known to build up long fixation chains toward available support points ( inter-limb APAs), so as to grant whole body equilibrium. Moreover, recent studies highlighted that APAs also build-up short fixation chains, within the same limb where a distal segment is moved ( intra-limb APAs), aimed at stabilizing the proximal segments. The neural structures generating intra-limb APAs still need investigations; the present study aims to compare focal movement kinematics and intra-limb APA latencies and pattern between healthy subjects and parkinsonian patients, assuming the latter as a model of basal ganglia dysfunction...
2018: Frontiers in Physiology
https://read.qxmd.com/read/30539752/utility-of-early-active-motion-for-flexor-tendon-repair-with-concomitant-injuries-a-multivariate-analysis
#13
Yuki Fujihara, Hideyuki Ota, Kentaro Watanabe
INTRODUCTION: Flexor tendon injury often occurs with concomitant injuries such as fracture, vascular injury, and extensor tendon injury. These injuries are repaired independently, without a comprehensive strategy. We aimed to identify the effect of concomitant injuries and treatment choice on the outcome of flexor tendon repair. PATIENTS AND METHODS: We evaluated 118 fingers of 102 adult patients with zone 1-3 flexor digitorum profundus (FDP) tendon injuries who underwent primary surgery at our hospital between April 2009 and December 2017...
December 2018: Injury
https://read.qxmd.com/read/30531287/the-fdp-fds-fdp-dual-tendon-transfer-a-simple-single-stage-reconstruction-technique-for-chronic-isolated-flexor-digitorum-profundus-tendon-injuries
#14
Nathan T Morrell
The reconstruction of chronic flexor tendon injuries remains one of the more challenging injuries facing the hand and upper extremity surgeon. In the setting of an intact flexor digitorum superficialis (FDS), there are few indications for isolated flexor digitorum profundus (FDP) reconstruction. Because of the interplay of the FDP system, the reestablishment of normal tension of the FDP tendons and lumbricals is particularly challenging, and postoperative stiffness, quadriga, or lumbrical plus phenomena can actually lead to a deterioration of digital function with surgery...
December 5, 2018: Techniques in Hand & Upper Extremity Surgery
https://read.qxmd.com/read/30487088/differences-in-typing-forces-muscle-activity-wrist-posture-typing-performance-and-self-reported-comfort-among-conventional-and-ultra-low-travel-keyboards
#15
Kiana Kia, Jonathan Sisley, Peter W Johnson, Jeong Ho Kim
This study investigated the relative impact of ultra-low travel keyboards on typing force, muscle activity, wrist posture, typing performance, and self-reported comfort/preference as compared to a conventional keyboard. In a repeated-measures laboratory-based study, 20 subjects were invited to type for 10 min on each of five keyboards with different travel distances of 0.5, 0.7, 1.2, 1.6 (ultra-low travel keyboards), and 2.0 mm (a conventional keyboard). During the typing sessions, we measured typing force; muscle activity in extrinsic finger muscles (flexor digitorum superficialis and extensor digitorum communis), shoulder (trapezius) and neck (splenius capitis); wrist posture; typing performance; and self-reported comfort/preference...
January 2019: Applied Ergonomics
https://read.qxmd.com/read/30481897/-mode-of-median-nerve-irritation-under-different-wrist-forcing-postures-observed-by-ultrasonography-and-foot-pressure-measurement-system
#16
C J Li, T Y Wang, J Y Cao, A L Huang, J F Wang, C G Ren, S P Chen, L J Wu
Objective: To analyze the influence of simulation mouse use motion under different wrist forcing postures on median nerve, tendons and ligaments in the carpal tunnel. Methods: From June to November in 2017, a total of 49 healthy volunteers [aged from 18 to 27 years, 24 males (48 cases of hands) and 25 females (50 cases of hands)] were selected in the Institute of Digitized Medicine and First Affiliated Hospital of Wenzhou Medical University.Three hand postures of the volunteers were simultaneously and continuously measured by using LOGIQ E9 ultrasonic diagnostic apparatus and Zebris foot pressure distribution measurement system...
November 20, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://read.qxmd.com/read/30474884/biomechanical-evaluation-of-tendon-regeneration-with-adipose-derived-stem-cell
#17
Alex de Lima Santos, Camila Gonzaga da Silva, Leticia Siqueira de Sá Barretto, Carlos Eduardo da Silveira Franciozi, Marcel Jun Sugawara Tamaoki, Fernando Gonçalves de Almeida, Flavio Faloppa
The use of Adipose-Derived Stem Cells (ADSC) has been presented as a new alternative for tendon reconstruction. Have been admitted that ADSCs are related to better outcomes when used in tendon healing. This research was designed to apply the potential of ADSCs in tendon healing. Flexor digitorum superficialis tendon lesion was performed on both legs of eleven New Zealand rabbits and them, at the same time, treated as follows: Suture alone (Group III - Suture, n:10), suture associated with ADSC (Group IV - Suture + ADSC, n:10) or without suture (Group II - SHAN, n:2)...
November 26, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://read.qxmd.com/read/30441619/measuring-complexity-in-different-muscles-during-sustained-contraction-using-fractal-properties-of-semg-signal
#18
Sridhar P Arjunan, Dinesh K Kumar
Modelling and analysis of surface Electromyogram (sEMG) signal has gained increasing attention in bio-signal processing for medical and healthcare applications. This research reports the study to examine the complexity in surface electromyogram signal measured from different muscles to identify the properties of muscles. Experiments were conducted to study the properties of the four muscle groups representing four sizes in length and complexities: Zygomaticus (facial), biceps, quadriceps and flexor digitorum superficialis (FDS)...
July 2018: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://read.qxmd.com/read/30441045/the-effect-of-movement-phase-on-the-contralaterally-coordinated-paired-associative-stimulation-induced-excitability
#19
Ahmad O Alokaily, Mathew Yarossi, Gerard G Fluet, Eugene Tunik, Sergei V Adamovich
Paired associative stimulation (PAS) has been shown to increase corticospinal excitability (CSE) providing a promising adjuvant therapeutic approach for stroke. Combining PAS with movement of the stimulated limb may further increase enhancement of CSE, however, individuals with moderate to severe stroke may not be able to engage in the necessary repetitive voluntary movements of the paretic limb. The objective of this study was to investigate the feasibility of contralaterally coordinated PAS (ccPAS) applied to the resting hand extensors during fast extension of the contralateral hand...
July 2018: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://read.qxmd.com/read/30440893/cross-recurrence-quantification-analysis-for-inter-muscular-coordination-during-power-grip-at-different-force-levels
#20
Na Zhang, Na Wei, Shouwei Yue, Xincheng Tian, Ke Li
This study aimed to examine the dynamical coordination across muscles during power grip at different force levels. Twenty-four healthy volunteers (12 males, 12 females) participated in this experiment. Subjects were instructed to grip a hydraulic hand dynamometer and produce forces at 30%, 50%, 70% Maximal Voluntary Contractions (MVC) for at least 10s, respectively. Surface electromyography (sEMG) signals were simultaneously recorded from eight muscles, including brachioradialis (BR), flexor carpi ulnaris (FCU), flexor carpi radialis (FCR), extensor digitorum communis (EDC), flexor digitorum superficialis (FDS), abductor pollicis brevis (APB), first dorsal interosseous (FDI) and abductor digiti minimi (ADM)...
July 2018: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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