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https://www.readbyqxmd.com/read/28933198/iatrogenic-injuries-in-percutaneous-pinning-techniques-for-fifth-metacarpal-neck-fractures
#1
Sheriff D Akinleye, Garret Garofolo-Gonzalez, Maya Deza Culbertson, Jack Choueka
BACKGROUND: There is little information regarding anatomic structures at risk during closed percutaneous treatment of fifth metacarpal neck fractures. This study evaluates a variety of common percutaneous techniques with the hypothesis that each approach presents unique risks to tendons and neurovascular structures. METHODS: Seven cadaveric hands were used for this study. The senior author, a board-certified hand surgeon with more than 20 years of experience, used a mini-C arm to pass 1...
September 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28920556/the-effects-of-limb-dominance-and-a-short-term-high-intensity-exercise-protocol-on-both-landings-of-the-vertical-drop-jump-implications-for-the-vertical-drop-jump-as-a-screening-tool
#2
Enda F Whyte, Patrick Kennelly, Oliver Milton, Chris Richter, Siobhán O'Connor, Kieran A Moran
The effectiveness of vertical drop jumps (VDJs) to screen for non-contact ACL injuries is unclear. This may be contributed to by discrete point analysis, which does not evaluate patterns of movement. Also, limited research exists on the second landing of VDJs, potential lower limb performance asymmetries and the effect of fatigue. Statistical parametric mapping investigated the main effects of landing, limb dominance and a high intensity, intermittent exercise protocol (HIIP) on VDJ biomechanics. Twenty-two male athletes (21...
September 18, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28906300/isolated-dorsoradial-capsular-tear-of-the-thumb-metacarpophalangeal-joint-missed-diagnosis-and-the-management-of-delayed-presentation
#3
Yvette Godwin, Britt Ter Horst, Godwin Scerri
Isolated dorsoradial capsule injuries of the thumb metacarpophalangeal joint are different from those associated with collateral ligament disruption. Early suspicion of this rare injury is important because, if overlooked, ulnarward subluxation of extensor pollicis longus tendon can develop. Functionally, active thumb extension becomes impaired, and over the long term, a thumb Boutonniere's deformity becomes established. Joint hypermobility/instability may predispose to this injury. The 2 cases presented illustrate this through anatomic differences...
September 12, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28902110/asymmetrie-of-maximum-trunk-hand-and-leg-in-comparison-of-volleyball-and-fitness-athletes
#4
Klaus Mattes, Bettina Wollesen, Stefanie Manzer
Playing volleyball and corresponding training loads lead to specific strains and might result in asymmetric muscle pattern. The study aimed to identify volleyball specific maximum bilateral strength asymmetries in comparison to fitness athletes. The cross-sectional study design compared an age-matched male volleyball group (n= 23; 27.9 ± 5 years) with a fitness group (n= 30; 26.3 ± 3 years). The participants performed an isometric maximum handgrip strength test followed by two isokinetic concentric maximum strength tests to determine the performance capacity of the axial trunk rotators (left-right) and bilateral leg extensors...
September 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28902098/repair-of-the-thumb-ulnar-collateral-ligament-with-suture-tape-augmentation
#5
Anthony F De Giacomo, Steven S Shin
One of the most commonly injured structures of the thumb metacarpophalangeal (MCP) joint is the ulnar collateral ligament (UCL). An acute injury of this ligament is often amenable to primary repair. Despite the favorable outcomes of primary repair, the thumb is often restricted during initial healing of the ligament with immobilization and delayed rehabilitation. We present a novel technique to augment the repair of the UCL with suture tape to provide immediate biomechanical support and strength during the critical time of ligament healing...
September 8, 2017: Techniques in Hand & Upper Extremity Surgery
https://www.readbyqxmd.com/read/28888715/acute-traumatic-rupture-of-the-patellar-tendon-in-pediatric-population-case-series-and-review-of-the-literature
#6
Mohamed Abdelhamid Ali Yousef, Scott Rosenfeld
BACKGROUND: Intact knee extensor mechanism is required for the normal function of the lower extremity. Patellar tendon rupture is a relatively rare injury with peak age incidence around 40 years and usually occurs midsubstance. The occurrence of pure patellar tendon rupture without bony avulsion is an extremely rare injury in the pediatric population with few cases reported in the literature with limited information regarding frequency, complications, and outcomes in children. However, due to increased participation in sports and high-energy recreational activities during childhood, the frequency of such injuries has progressively increased...
September 1, 2017: Injury
https://www.readbyqxmd.com/read/28888567/biomechanics-of-the-acute-boutonniere-deformity
#7
Luis Grau, Hasan Baydoun, Kevin Chen, Seth T Sankary, Farid Amirouche, Mark H Gonzalez
PURPOSE: To demonstrate which structures of the extensor mechanism create a boutonniere deformity, when damaged, in a cadaver model. An analysis of how damage to these anatomical structures affects the biomechanical performance of the extensor mechanism was also performed. METHODS: We secured 18 fresh cadaveric hands onto an apparatus consisting of a computer-controlled motor and tensiometer attached in series to the extensor communis tendon of the ring and middle digits...
September 7, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28887523/the-role-of-high-frequency-ultrasonography-in-diagnosis-of-acute-closed-mallet-finger-injury
#8
Tiezheng Wang, Hengtao Qi, Jianbo Teng, Zengtao Wang, Bin Zhao
To evaluate the role of high frequency ultrasonography in diagnosis of acute closed mallet finger injury. 36 patients diagnosed with mallet finger were included in this study. All patients underwent ultrasonography, magnetic resonance imaging(MRI) and X-ray examinations. A new kind of classification of acute mallet finger injury based on ultrasonography findings was described. The difference in terms of extensor tendon injury and bony fragment identification ability among the three types of examinations were described respectively...
September 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28871370/-palmar-dislocation-of-the-proximal-interphalangeal-joint-and-traumatic-boutonni%C3%A3-re-deformity
#9
T Hauck, W Müller-Seubert, R E Horch
Injury to the central slip of the extensor tendon may occur with open and also with closed injuries, such as volar dislocation of the proximal interphalangeal (PIP) joint. For adequate treatment, it is necessary to identify all injured structures. Without appropriate primary management, the patient is likely to develop a subacute to chronic posttraumatic boutonnière deformity. A fixed boutonnière deformity requires recovery of joint mobility. Once joint mobility is achieved, secondary surgical reconstruction of the central slip can be performed with a tendon transfer or a tendon transplant...
September 4, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28865983/distal-radioulnar-joint-instability
#10
O Marès
Distal radioulnar joint (DRUJ) instability is a rare but disabling problem. Surgical treatment remains a challenge. The advent of arthroscopic techniques has helped to rebuild the triangular fibrocartilaginous complex (TFCC), especially its deep part. However, isolated TFCC damage is not responsible for instability. Its repair is sometimes not sufficient to restore DRUJ stability, or the chronicity of the injury prevents its direct repair. Open surgical procedures still have a role in these cases. They require a detailed knowledge of the various stabilizers of the DRUJ...
August 30, 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28840147/perioperative-testosterone-supplementation-increases-lean-mass-in-healthy-men-undergoing-anterior-cruciate-ligament-reconstruction-a-randomized-controlled-trial
#11
Brian Wu, Dan Lorezanza, Ido Badash, Max Berger, Christianne Lane, Jonathan C Sum, George F Hatch, E Todd Schroeder
BACKGROUND: Rehabilitation after repair of the anterior cruciate ligament (ACL) is complicated by the loss of leg muscle mass and strength. Prior studies have shown that preoperative rehabilitation may improve muscle strength and postoperative outcomes. Testosterone supplementation may likewise counteract this muscle loss and potentially improve clinical outcomes. PURPOSE: The purpose was to investigate the effect of perioperative testosterone administration on lean mass after ACL reconstruction in men and to examine the effects of testosterone on leg strength and clinical outcome scores...
August 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28836453/readability-of-the-most-commonly-accessed-online-patient-education-materials-pertaining-to-pathology-of-the-hand
#12
Sheriff D Akinleye, Garret Garofolo-Gonzalez, Michael Montuori, Maya Deza Culbertson, Jennifer Hashem, David Marc Edelstein
BACKGROUND: The American Medical Association (AMA) and National Institutes of Health (NIH) recommend that patient education materials be written at no higher than a sixth-grade reading level. METHODS: We examined 100 online educational materials for the 10 hand conditions most commonly treated by hand surgeons, as reported by the American Society for Surgery of the Hand. The listed conditions were carpal tunnel syndrome, basal joint arthritis of the thumb, de Quervain syndrome, Dupuytren's contracture, ganglion cysts, hand fractures, trigger finger, extensor tendon injuries, flexor tendon injuries, and mallet finger...
August 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28817976/an-open-source-model-and-solution-method-to-predict-co-contraction-in-the-finger
#13
Alexander R MacIntosh, Peter J Keir
A novel open-source biomechanical model of the index finger with an electromyography (EMG)-constrained static optimization solution method are developed with the goal of improving co-contraction estimates and providing means to assess tendon tension distribution through the finger. The Intrinsic model has four degrees of freedom and seven muscles (with a 14 component extensor mechanism). A novel plugin developed for the OpenSim modelling software applied the EMG-constrained static optimization solution method...
August 17, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28800252/progressive-changes-in-walking-kinematics-and-kinetics-after-anterior-cruciate-ligament-injury-and-reconstruction-a-review-and-meta-analysis
#14
Lindsay V Slater, Joseph M Hart, Adam R Kelly, Christopher M Kuenze
CONTEXT:   Anterior cruciate ligament (ACL) injury and ACL reconstruction (ACLR) result in persistent alterations in lower extremity movement patterns. The progression of lower extremity biomechanics from the time of injury has not been described. OBJECTIVE:   To compare the 3-dimensional (3D) lower extremity kinematics and kinetics of walking among individuals with ACL deficiency (ACLD), individuals with ACLR, and healthy control participants from 3 to 64 months after ACLR...
August 11, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28774256/anatomical-variations-of-the-extensor-carpi-ulnaris-groove-a-new-computed-tomography-based-evaluation
#15
Sho Kohyama, Toshikazu Tanaka, Eriko Okano, Ochiai Naoyuki
BACKGROUND: This study aimed to develop a classification that precisely describes the extensor carpi ulnaris (ECU) groove morphology. METHODS: Reconstructed axial plane computed tomography scans of the wrists of 200 patients were reviewed. Three groups of groove shape were created based on the position of the deepest point: deviated to the ulnar side (Type U), in the middle of the groove (Type M), and deviated to the radial side (Type R). Groove depth, width, carrying angle, and radius of the curvature were measured using the Picture Archiving and Communication System in a slice in which the ulnar head was the largest...
September 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/28774251/dorsal-and-volar-surgical-approaches-to-the-metacarpophalangeal-joint-a-comparative-anatomic-study
#16
Eitan Melamed, Nicholas Calotta, Ricardo Bello, Richard M Hinds, John T Capo, Scott Lifchez
BACKGROUND: We compared 3 surgical approaches to the MP joint: a dorsal extensor tendon-splitting approach, a dorsal extensor tendon-reflecting parasagittal approach, and the volar A1 pulley approach. We quantitatively compared each of these approaches by measuring the amount of articular cartilage exposed on the base of the proximal phalanx. We hypothesize that visualization of the articular cartilage of the proximal phalangeal base is enhanced with the volar approach. METHODS: The MP joints of the 32 available digits were randomly assigned to 1 of 3 surgical approaches: extensor tendon splitting (A), extensor tendon reflecting (B), or volar approach (C)...
September 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/28761432/effects-of-pulsed-radiofrequency-on-spasticity-in-patients-with-spinal-cord-injury-a-report-of-two-cases
#17
Min Cheol Chang, Yun Woo Cho
Spasticity following spinal cord injury (SCI) results in functional deterioration and reduced quality of life. Herein, we report two SCI patients who presented with good response to pulsed radiofrequency (PRF) for the management of spasticity in the lower extremities. Patient 1 (a 47-year-old man) had complete thoracic cord injury and showed a phasic spasticity on the extensor of both knees (3-4 beats clonus per every 30 seconds) and tonic spasticity (Modified Ashworth Scale: 3) on both hip adductors. Patient 2 (a 64-year-old man) had incomplete cervical cord injury and showed a right ankle clonus (approximately 20 beats) when he walked...
June 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28761419/interfacing-peripheral-nerve-with-macro-sieve-electrodes-following-spinal-cord-injury
#18
REVIEW
Nathan K Birenbaum, Matthew R MacEwan, Wilson Z Ray
Macro-sieve electrodes were implanted in the sciatic nerve of five adult male Lewis rats following spinal cord injury to assess the ability of the macro-sieve electrode to interface regenerated peripheral nerve fibers post-spinal cord injury. Each spinal cord injury was performed via right lateral hemisection of the cord at the T9-10 site. Five months post-implantation, the ability of the macro-sieve electrode to interface the regenerated nerve was assessed by stimulating through the macro-sieve electrode and recording both electromyography signals and evoked muscle force from distal musculature...
June 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28754264/surgical-management-of-posterior-knee-dislocation-associated-with-extensor-apparatus-rupture
#19
Chang-Cheng Liu, Xing Gao, Ming Xu, Zhi-Gang Kong
OBJECTIVE: The purpose of this study was to report the clinical and functional results of patients who underwent surgical management for posterior knee dislocation associated with extensor apparatus rupture. INTRODUCTION: Posterior knee dislocations associated with extensor apparatus ruptures are defined as rare but complicated injuries, which are difficult to return to the level of activity prior to the injury. The study demonstrated a hypothesis that good knee stability and early gain of range of motion could be achieved with deliberate design of the treatment protocol and proper application of the instruments...
July 25, 2017: Knee
https://www.readbyqxmd.com/read/28750969/a-case-study-utilizing-myofascial-release-acupressure-and-trigger-point-therapy-to-treat-bilateral-stringhalt-in-a-12%C3%A2-year-old-akhal-teke-horse
#20
Tammy Brockman
"Stringhalt" is a horse condition that causes one or both hind legs to spasm when walking, trotting or backing. The condition is thought to be related to a neurological cause from either plant toxicity or peripheral nerve injury. The prognosis is poor and the horse's performance and quality of life can be affected. Treatment has included surgically cutting the digital extensors with varied results. The objective of the study is to utilize soft tissue release via acupressure, trigger point and myofascial release to decrease symptoms of stringhalt...
July 2017: Journal of Bodywork and Movement Therapies
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