The extensor tendons

2021 ◽  
pp. 495-500
Author(s):  
Sanjib Majumder
Keyword(s):  
Classification System ◽  
Extensor Tendon ◽  
Site Specific ◽  
Extensor Tendons ◽  
Finger Extension ◽  
The Individual

The extensor tendon system of the hand includes the forearm-based extrinsic extensors that power wrist and finger extension as well as the hand-based intrinsic extensors that stabilize the digits in extension. The anatomy and interaction of these tendons are described with reference to the topographic classification system of Verdan’s zones. The injuries of the extensors can be either closed or open and the treatment is injury and site specific. The approaches to the individual injuries and treatment are described.

The tension band principle and angular testing of extensor tendon repairs

2011 ◽  
Vol 36 (4) ◽  
pp. 297-302 ◽  
Author(s):  
J. Henderson ◽  
M. Sutcliffe ◽  
P. Gillespie
Keyword(s):  
Extensor Tendon ◽  
Tension Band ◽  
Curved Surfaces ◽  
Full Extension ◽  
Testing Apparatus ◽  
Extensor Tendons

Extensor tendons in the finger are flat and not amenable to repair by core and epitendinous sutures. Mattress sutures and Kessler repairs without epitendinous stitching are often used for extensor tendon divisions in the fingers. Except when in full extension, the finger presents a series of curved surfaces (at each joint) to the tendon. It was hypothesized that extensor tendons are subject to the ‘tension band’ principle and that they might be amenable to repair by dorsal-only epitendinous sutures. A Silfverskiöld dorsal-only repair was compared with mattress and Kessler repairs in vitro on a curvilinear testing apparatus. The epitendinous technique was found to be significantly more resistant to gapping and rupture, as well as more resistant to deformation (i.e. stiffer) than the conventional techniques.

Tendon Entrapment in Distal Radius Fractures

2009 ◽  
Vol 34 (4) ◽  
pp. 479-482 ◽  
Author(s):  
M. OKAZAKI ◽  
K. TAZAKI ◽  
T. NAKAMURA ◽  
Y. TOYAMA ◽  
K. SATO
Keyword(s):  
Clinical Features ◽  
Distal Radius ◽  
Flexor Tendon ◽  
Extensor Tendon ◽  
Distal Radius Fractures ◽  
Radius Fractures ◽  
Extensor Tendons ◽  
Epiphyseal Fracture ◽  
Tendon Entrapment

We retrospectively defined the rate and clinical features of tendon entrapment in 693 consecutive patients with 701 distal radius fractures treated in a single hospital. Eight extensor tendons and one flexor tendon were entrapped. All fractures with extensor tendon entrapment were palmarly displaced (Smith type) or epiphyseal. Flexor tendon entrapment was seen in dorsally angulated (Colles type) epiphyseal fracture. The rate of tendon entrapment in acute distal radius fractures was 1.3%. Extensor tendon entrapment in palmarly displaced fractures is more common.

Elbow Arthrography in the Evaluation of Posterior Interosseous Nerve Compression in Rheumatoid Arthritis

1986 ◽  
Vol 11 (1) ◽  
pp. 120-122
Author(s):  
A. I. ROTH ◽  
B. N. STULBERG ◽  
E. J. FLEEGLER ◽  
G. H. BELHOBEK
Keyword(s):  
Rheumatoid Arthritis ◽  
Case Report ◽  
Diagnostic Tool ◽  
Tendon Rupture ◽  
Extensor Tendon ◽  
Nerve Compression ◽  
Posterior Interosseous Nerve ◽  
Rheumatoid Arthritic ◽  
Finger Extension

This is a case report of a fifty-nine-year-old rheumatoid arthritic woman who developed lack in finger extension bilaterally. These deficits had two completely different aetiologies, Posterior Interosseous Nerve (PIN) Syndrome and extensor tendon rupture. No previous report in the literature has used elbow arthrography as a diagnostic tool in a patient with PIN Syndrome. Elbow arthrography confirmed the abnormality at this joint and aided in appropriate management.

Interrater Reliability of the New Sport-Specific Evidence-Based Classification System for Para Va'a

2020 ◽  
Vol 37 (3) ◽  
pp. 241-252
Author(s):  
Johanna S. Rosén ◽  
Victoria L. Goosey-Tolfrey ◽  
Keith Tolfrey ◽  
Anton Arndt ◽  
Anna Bjerkefors
Keyword(s):  
Classification System ◽  
Interrater Reliability ◽  
Intraclass Correlation ◽  
Test Battery ◽  
Evidence Based ◽  
Water Test ◽  
The Individual ◽  
New Evidence ◽  
Test Level ◽  
Total Agreement

The purpose of this study was to examine the interrater reliability of a new evidence-based classification system for Para Va'a. Twelve Para Va'a athletes were classified by three classifier teams each consisting of a medical and a technical classifier. Interrater reliability was assessed by calculating intraclass correlation for the overall class allocation and total scores of trunk, leg, and on-water test batteries and by calculating Fleiss’s kappa and percentage of total agreement in the individual tests of each test battery. All classifier teams agreed with the overall class allocation of all athletes, and all three test batteries exhibited excellent interrater reliability. At a test level, agreement between classifiers was almost perfect in 14 tests, substantial in four tests, moderate in four tests, and fair in one test. The results suggest that a Para Va'a athlete can expect to be allocated to the same class regardless of which classifier team conducts the classification.

Sex differences and the role of ovarian hormones in site-specific nociception of SHR

2019 ◽  
Vol 317 (2) ◽  
pp. R223-R231
Author(s):  
Bruna M. Santos ◽  
Glauce C. Nascimento ◽  
Camila P. Capel ◽  
Gabriela S. Borges ◽  
Thales Rosolen ◽  
...  
Keyword(s):  
Chronic Diseases ◽  
Ovarian Hormones ◽  
Accurate Diagnosis ◽  
Hypertensive Rats ◽  
Site Specific ◽  
Spontaneously Hypertensive ◽  
Inflammatory Nociception ◽  
The Individual ◽  
Orofacial Nociception

Accurate diagnosis and treatment of pain is dependent on knowledge of the variables that might alter this response. Some of these variables are the locality of the noxious stimulus, the sex of the individual, and the presence of chronic diseases. Among these chronic diseases, hypertension is considered a serious and silent disease that has been associated with hypoalgesia. The main goal of this study was to evaluate the potential nociceptive differences in spontaneously hypertensive rats (SHR) regarding the locality of the stimulus, i.e., the temporomandibular joint or paw, the sex, and the role of ovarian hormones in a model of mechanical nociception (Von Frey test) or formalin-induced inflammatory nociception. Our results indicate that SHR had lower orofacial mechanical nociception beyond the lower mechanical nociception in the paw compared with WKY rats. In a model of formalin-induced inflammatory nociception, SHR also had decreased nociception compared with normotensive rats. We also sought to evaluate the influence of sex and ovarian hormones on orofacial mechanical nociception in SHR. We observed that female SHR had higher mechanical nociception than male SHR only in the paw, but it had higher formalin-induced orofacial nociception than male SHR. Moreover, the absence of ovarian hormones caused an increase in mean arterial pressure and a decrease in paw nociception in female SHR.

A Comparison of Results of Extensor Tendon Repair Followed by Early Controlled Mobilisation Versus Static Immobilisation

1989 ◽  
Vol 14 (1) ◽  
pp. 18-20 ◽  
Author(s):  
J. A. Chow ◽  
S. Dovelle ◽  
L. J. Thomes ◽  
P. K. Ho ◽  
J. Saldana
Keyword(s):  
Tendon Repair ◽  
Extensor Tendon ◽  
Functional Results ◽  
Consecutive Series ◽  
Extensor Tendons ◽  
Dynamic Splinting ◽  
Tendon Surgery ◽  
Tendon Ruptures ◽  
Controlled Motion ◽  
Extensor Lag

To compare the functional results of early controlled mobilisation and static immobilisation following repair of extensor tendons, we conducted a comparative study between two centres. In one, a consecutive series of tenorrhaphy patients was treated post-operatively by the dynamic splinting technique. In the other, a consecutive group was treated by static splinting. All patients treated by dynamic splinting were graded excellent within six weeks following surgery; no tendon ruptures occurred and no secondary corrective tendon surgery was required. After static splinting, 40% were graded excellent, 31% good, 29% fair, and none poor; six fingers treated by static splintage subsequently required tenolysis. Following surgical repair of extensor tendons of the hand, patients treated by early controlled motion regain better flexion function in terms of grip strength and pulp-to-palm distance. Dynamic splinting is a more effective technique than static splinting in the prevention of extensor lag.

SPONTANEOUS ULNAR DISLOCATION OF THE INDEX, LONG, RING AND SMALL FINGER EXTENSOR TENDONS AT THE METACARPOPHALANGEAL JOINTS: A CASE REPORT

Hand Surgery ◽  
2011 ◽  
Vol 16 (02) ◽  
pp. 193-196 ◽  
Author(s):  
Katsuhisa Tanabe ◽  
Takaya Nakajima ◽  
Eiji Sogo
Keyword(s):  
Rheumatoid Arthritis ◽  
Congenital Anomaly ◽  
Case Report ◽  
Extensor Tendon ◽  
Metacarpophalangeal Joint ◽  
Extensor Digitorum ◽  
Extensor Digitorum Communis ◽  
Metacarpophalangeal Joints ◽  
Extensor Tendons

Finger extensor tendon dislocation at the metacarpophalangeal joint is caused by various etiologies, such as trauma, congenital anomaly, or rheumatoid arthritis. When the dislocation occurs with no etiology, this is called spontaneous dislocation. Although spontaneous extensor tendon dislocation in one, two or three fingers has been described, to our knowledge, simultaneous dislocation in four fingers has not been reported. In this paper, we report a spontaneous ulnar dislocation of all the extensor tendons in the index, long, ring, and small fingers. Repair of the radial sagittal bands of the extensor digitorum communis of the middle and ring fingers reduced dislocation of all the extensor tendons in four fingers.

scholarly journals O PRIRODE ZONOSPETsIFIChNOSTI REAKTsIY SKELETA ChELOVEKA V USLOVIYaKh NEVESOMOSTI»

2011 ◽  
Vol 14 (3) ◽  
pp. 3-6
Author(s):  
V. S. Oganov ◽  
I. A. Skripnikova ◽  
V. E. Novikov ◽  
A. V. BAKULIN ◽  
O. E. KABITsKAYa ◽  
...  
Keyword(s):  
Bone Mass ◽  
Individual Variability ◽  
Homo Erectus ◽  
Site Specific ◽  
Local Bone ◽  
Long Duration ◽  
Genes Expression ◽  
Different Types ◽  
History Of ◽  
The Individual

Densitometry of cosmonauts following long duration missions revealed different types of site specific changers of human skeleton. So, theoretically, the expected a decrease in bone mass according with gravity vector reflected the local specificity of bone genes expression connected with the mechanical history of Homo erectus evolution. High individual variability of bone mass changes may be a manifestation of genetic polymorphism. We show the individual stability of bone mass changes at different sites of skeleton after repetitive spaceflights. This phenomenon may be considered as an illustration of phenotypical characteristics of local bone metabolism in the form of specific for this locus spatial structure of non-collagenic proteins distribution.

scholarly journals Anatomy of unfolding: The site-specific fold stability of Yfh1 measured by 2D NMR

2021 ◽  
Author(s):  
Rita Puglisi ◽  
Gogulan Karunanithy ◽  
D. Flemming Hansen ◽  
Annalisa Pastore ◽  
Piero Andrea Temussi
Keyword(s):  
Protein Unfolding ◽  
2D Nmr ◽  
Heat Denaturation ◽  
Specific Information ◽  
Hydrophobic Core ◽  
2D Nmr Spectroscopy ◽  
Site Specific ◽  
The Individual ◽  
Low Ionic Strength ◽  
Fold Stability

AbstractMost techniques allow detection of protein unfolding either by following the behaviour of single reporters or as an averaged all-or-none process. We recently added 2D NMR spectroscopy to the well-established techniques able to obtain information on the process of unfolding using resonances of residues in the hydrophobic core of a protein. Here, we questioned whether an analysis of the individual stability curves from each resonance could provide additional site-specific information. We used the Yfh1 protein that has the unique feature to undergo both cold and heat denaturation at temperatures above water freezing at low ionic strength. We show that stability curves inconsistent with the average NMR curve from hydrophobic core residues mainly comprise exposed outliers that do nevertheless provide precious information. By monitoring both cold and heat denaturation of individual residues we gain knowledge on the process of cold denaturation and convincingly demonstrate that the two unfolding processes are intrinsically different.

Improved Speech Command Classification System for Sinhala Language based on Automatic Speech Recognition

2020 ◽  
pp. 2050009
Author(s):  
Lakshika Kavmini ◽  
Thilini Dinushika ◽  
Uthayasanker Thayasivam ◽  
Sanath Jayasena
Keyword(s):  
Speech Recognition ◽  
Automatic Speech Recognition ◽  
Error Rate ◽  
Classification System ◽  
Value Added ◽  
Gaussian Mixture ◽  
Conversational Agents ◽  
Language Resources ◽  
Dialog Systems ◽  
The Individual

The recent advancements in conversational Artificial Intelligence (AI) are fastly getting integrated with every realm of human lives. Conversational agents who can learn, understand human languages and mimic the human thinking process have already created a revolution in human lifestyle. Understanding the intention of a speaker from his natural speech is a significant step in conversational AI. A major challenge that hinders the efficacy of this process is the lack of language resources. In this research, we address this issue and develop a domain-specific speech command classification system for the Sinhala language, one of the low-resourced languages. An effective speech command classification system can be utilized in several value added applications such as speech dialog systems. Our speech command classification system is developed by integrating Automatic Speech Recognition (ASR) and Natural Language Understanding (NLU). The ASR engine is implemented using Gaussian Mixture Model-Hidden Markov Model (GMM-HMM) and it converts a Sinhala speech command into a corresponding text representation. The text classifier, which is implemented as an ensemble unit of several classifiers, predicts the intent of the speaker when provided with the above text output. In this paper, we discuss and evaluate various algorithms and techniques that can be utilized to optimize the performance of both the ASR and text classifier. As well, we present our novel Sinhala speech data corpus of 4.15[Formula: see text]h which is based on the banking domain. As the final outcome, our system reports its Sinhala speech command classification accuracy as 91.03%. It shows that our system outperforms the state-of-the-art speech-to-intent mapping systems developed for the Sinhala language. The individual evaluation on the ASR system reports a 9.91% Word Error Rate and a 19.95% Sentence Error Rate, suggesting the applicability of advanced speech recognition techniques despite the limited language resources. Finally, our findings deliver useful insights on further research in speech command classification in the low-resourced context.

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