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https://www.readbyqxmd.com/read/28650238/three-dimensional-inverse-dynamics-of-the-forelimb-of-beagles-at-a-walk-and-trot
#1
Emanuel Andrada, Lars Reinhardt, Karin Lucas, Martin S Fischer
OBJECTIVE To perform 3-D inverse dynamics analysis of the entire forelimb of healthy dogs during a walk and trot. ANIMALS 5 healthy adult Beagles. PROCEDURES The left forelimb of each dog was instrumented with 19 anatomic markers. X-ray fluoroscopy was used to optimize marker positions and perform scientific rotoscoping for 1 dog. Inverse dynamics were computed for each dog during a walk and trot on the basis of data obtained from an infrared motion-capture system and instrumented quad-band treadmill. Morphometric data were obtained from a virtual reconstruction of the left forelimb generated from a CT scan of the same dog that underwent scientific rotoscoping...
July 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28645215/upper-extremity-trauma-resulting-from-agricultural-accidents-mechanism-and-severity-for-patients-with-and-without-upper-extremity-injury
#2
Louis C Grandizio, Benjamin Wagner, Jove Graham, Joel C Klena
BACKGROUND: Farming remains the most dangerous occupation in the United States and upper extremity (UE) injuries occur frequently in agricultural accidents. The purpose of this study is to describe the injury mechanisms, severity, and health care costs of UE injuries resulting from agricultural accidents and to compare patients with and without injuries to the UE. METHODS: We performed a 6-year retrospective review of our level I trauma center registry from January 2006 to May 2013, identifying all patients injured in an agricultural accident...
June 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28639560/mechanical-properties-of-decellularized-extracellular-matrix-coated-with-ticapcon-film
#3
I V Sukhorukova, A N Sheveyko, K L Firestein, Ph V Kiryukhantsev-Korneev, D Golberg, D V Shtansky
For the first time the surface of decellularized extracellular matrix (DECM) was modified via deposition of a multicomponent bioactive nanostructured film for improvement of the DECM's mechanical properties. TiCaPCON films were deposited onto the surface of intact and decellularized ulna, radius, and humerus bones by magnetron sputtering of TiC0.5 + 10%Ca3(PO4)2 and Ti targets in a gaseous mixture of Ar + N2. The film structure was studied using x-ray diffraction, scanning and transmission electron microscopy, and Raman spectroscopy...
June 22, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28637998/reinvestigation-of-the-morphological-characteristics-of-the-lateral-ulnar-collateral-ligament-in-humans
#4
Karen Tokunaga, Kotaro Sato, Goro Tajima, Jun Yan, Yoshikuni Mimata, Katsumi Tajima, Yuki Kikuchi, Minoru Doita
To clarify the cause of posterolateral rotatory instability after damage to the lateral ulnar collateral ligament (LUCL), the morphological characteristics of the LUCL were reinvestigated and three-dimensional (3D) image of the ligament was reconstructed using 35 human elbows. The results were as follows: 1) the insertion point of the LUCL on the humerus was almost at the center of the capitellum, and its width was 2.61 ± 1.02 mm. The insertion point of the LUCL on the ulna was located from the lesser sigmoid notch to the supinator crest and had a width of 9...
2017: Okajimas Folia Anatomica Japonica
https://www.readbyqxmd.com/read/28636054/guidelines-for-surgical-approaches-for-minimally-invasive-plate-osteosynthesis-in-cats
#5
Philipp A Schmierer, Antonio Pozzi
OBJECTIVES: Minimally invasive plate osteosynthesis (MIPO) is one of the most recent fixation techniques that embody the concept of biological osteosynthesis. Several studies evaluating MIPO in dogs have been published in the recent years. However, there are few clinical reports of MIPO in cats and no description of the surgical approaches. The purpose of our study was to describe the safe corridors for plate insertion in cats using the MIPO technique. METHODS: The surgical approaches for the humerus, radius-ulna, femur and tibia were developed after reviewing the described techniques and surgical approaches for MIPO in dogs, while considering any relevant anatomical difference between dogs and cats...
June 21, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/28634923/osteoblastoma-of-the-elbow-analysis-of-13-patients-and-literature-review
#6
Andrea Angelini, Andrès Felipe Varela-Osorio, Giulia Trovarelli, Antonio Berizzi, Gabriele Zanotti, Pietro Ruggieri
PURPOSE: To analyze the clinical and radiographic characteristics, treatment, and outcome of patients with elbow osteoblastoma. PATIENTS AND METHODS: We present 13 patients (7 males and 6 females; mean age, 28 years) diagnosed and treated for an elbow osteoblastoma from 1975 to 2012. Mean follow-up was 29 months (range 12-60 months). Clinical presentation, imaging, surgical treatment, complications, range of elbow motion, and functional outcome were evaluated...
June 20, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28634743/comminuted-olecranon-fractures-biomechanical-testing-of-locked-versus-minifragment-non-locked-plate-fixation
#7
David S Wellman, Scott M Tucker, Josh R Baxter, Nadine C Pardee, Lionel E Lazaro, Christopher S Smith, Dean G Lorich, David L Helfet
INTRODUCTION: Open reduction and internal fixation has long been accepted as optimal treatment for displaced olecranon fractures based on poor results seen with conservative management. With the presence of comminution, tension-band wiring constructs are contraindicated due to tendency to compress through fragments, thereby shortening the articular segment. Therefore, plate fixation is typically employed. Our hypothesis was that in a comminuted fracture model, 2.7 mm reconstruction plating without locking screws will perform equally to 3...
June 20, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28632577/outcome-of-pediatric-forearm-fracture-reductions-performed-by-pediatric-emergency-medicine-providers-compared-with-reductions-performed-by-orthopedic-surgeons-a-retrospective-cohort-study
#8
Donna Milner, Ernest Krause, Karen Hamre, Andrew Flood
OBJECTIVE: The aim of this study was to describe the outcome differences between board-certified orthopedists and pediatric emergency medicine (PEM) physicians conducting forearm fracture reductions. METHODS: We performed an analysis of patients between 1 and 14 years of age who presented to the emergency department (ED) with a forearm fracture requiring reduction. Data collected included reducing provider (PEM or orthopedist) and prereduction, postreduction, and follow-up fracture angles and displacements of both radius and ulna...
June 20, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28630854/stacked-flexible-nailing-for-radius-ulna-fractures-revival-of-a-lost-technique
#9
Qaed Dhariwal, Parvez Inamdar, Pankush Arora, Ashok Shyam
INTRODUCTION: Simultaneous radius and ulna fractures are common in adults and generally osteosynthesis with plating is the treatment of choice. Nailing of such fractures is infrequently advocated. We present our unique technique of radius ulna nailing in adults to achieve closed reduction and early predictable union with minimal or no complications. CASE REPORT: Case 1: 22 year old male with midshaft both bones forearm fracture was treated with stacked nailing. Two 2...
January 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28630850/anterior-dislocation-of-elbow-with-neurovascular-injury-a-rare-case-report
#10
S Kailash, S Shanmuganathan
INTRODUCTION: Anterior elbow dislocation is an infrequent lesion, produced by direct trauma to the proximal ulna after a fall on the elbow in flexion and injury to the neurovascular bundle is not infrequent. Authors report a case of acute anterior dislocation of the elbow joint with neurovascular injury. CASE REPORT: A 30-year-old male admitted with a history of accidental fall followed by pain, swelling over his left elbow. Clinical, radiological, Doppler investigations revealed anterior dislocation of the elbow with brachial artery injury with posterior interosseous nerve palsy without any bony injury...
January 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28630838/a-case-report-of-an-unusual-case-of-tuberculous-osteomyelitis-causing-spontaneous-pathological-fracture-of-humerus-in-a-middle-aged-female
#11
Umesh Birole, Ashish Ranade, Mahesh Mone
INTRODUCTION: Tuberculosis is a major health problem worldwide. Extrapulmonary tuberculosis is often secondary to some primary foci in lungs. There are reports of tuberculous osteomyelitis involving maxilla, ulna, femur, and shoulder joint but none have reported pathological fracture in humeral diaphysis due to tuberculosis osteomyelitis without shoulder joint involvement. We report a case of pathological fracture of humerus diaphysis due to tuberculous osteomyelitis with normal articular space...
January 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28628157/-biomechanical-analysis-of-the-deep-radioulnar-ligaments-stabilizing-the-distal-radioulnar-joint
#12
(no author information available yet)
OBJECTIVE: To evaluate the role of the deep radioulnar ligament in the stability of the distal radioulnar joint (DRUJ). METHODS: In the study, 14 fresh cadaver upper extremities were randomly divided into two groups. After exposuring the palmar and dorsal deep distal radioulnar ligament, one group was marked as palmar deep radioulnar ligament, and the other group was marked as dorsal deep radioulnar ligament. The pronator teres and the supinator were exposed. A Kirschner wire perpendicular to the bone on Lister tubercle of radius was inserted, then another Kirschner wire on the same level of ulnar inserted when the forearm was in neural position, which was kept parallel to the first Kirschner wire...
June 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28623105/transfer-of-the-lateral-antebrachial-cutaneous-nerve-to-the-dorsal-branch-of-the-ulnar-nerve-without-nerve-graft-in-case-of-lower-brachial-plexus-injuries-anatomical-and-feasibility-study
#13
J Pauchot, U Assouline, S Valmary-Degano, B Constantinou, L Obert, D Lepage
In the context of lower (C8-T1) brachial plexus injury, transfer of the lateral antebrachial cutaneous nerve (LABCN) to the dorsal branch of the ulnar nerve (DBUN) with an interposed sural nerve graft has been proposed to restore sensitivity on the ulnar side of the hand. The purpose of this study was to assess the feasibility of performing this transfer directly - without interposition of a nerve graft - by intraneural dissection of the DBUN. An anatomical study was performed with 20 upper limbs from adult human cadavers...
June 13, 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28622924/functional-associations-between-support-use-and-forelimb-shape-in-strepsirrhines-and-their-relevance-to-inferring-locomotor-behavior-in-early-primates
#14
Anne-Claire Fabre, Judit Marigó, Michael C Granatosky, Daniel Schmitt
The evolution of primates is intimately linked to their initial invasion of an arboreal environment. However, moving and foraging in this milieu creates significant mechanical challenges related to the presence of substrates differing in their size and orientation. It is widely assumed that primates are behaviorally and anatomically adapted to movement on specific substrates, but few explicit tests of this relationship in an evolutionary context have been conducted. Without direct tests of form-function relationships in living primates it is impossible to reliably infer behavior in fossil taxa...
July 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28614530/chronic-recurrent-multifocal-osteomyelitis-exhibiting-predominance-of-periosteal-reaction
#15
Rodolfo Mendes Queiroz, Pedro Henrique Pereira Rocha, Lara Zupelli Lauar, Mauro José Brandão da Costa, Claudio Benedini Laguna, Rafael Gouvêa Gomes de Oliveira
Chronic recurrent multifocal osteomyelitis is an idiopathic nonpyogenic autoinflammatory bone disorder involving multiple sites, with clinical progression persisting for more than 6 months and which may have episodes of remission and exacerbation in the long term. It represents up to 2-5% of the cases of osteomyelitis, with an approximate incidence of up to 4/1,000,000 individuals, and average age of disease onset estimated between 8-11 years, predominantly in females. The legs are the most affected, with a predilection for metaphyseal regions along the growth plate...
April 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28606433/plate-osteosynthesis-of-proximal-ulna%C3%A2-fractures-a-biomechanical-micromotion-analysis
#16
Michael Hackl, Katharina Mayer, Mareike Weber, Manfred Staat, Roger van Riet, Klaus Josef Burkhart, Lars Peter Müller, Kilian Wegmann
PURPOSE: Double plating has been promoted, in recent years, as an alternative treatment method for proximal ulna fractures. This study aimed to compare the biomechanical properties of double-plate osteosynthesis with posterior plate fixation using a novel investigational design utilizing a 3-dimensional camera system to analyze fracture micromotion. METHODS: Fourteen fresh-frozen specimens were available for this study. Mayo type IIA fractures of the olecranon were created and internal fixation was performed with either an angular stable posterior plate or angular stable double plates...
June 9, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28603568/current-concepts-in-radial-club-hand
#17
Takehiko Takagi, Atsuhito Seki, Shinichiro Takayama, Masahiko Watanabe
Radial club hand is a complex congenital abnormality of the radial or pre-axial border of the upper extremity. It has a wide range of phenotypes from hypoplasia of the thumb to complete absence of the radius and the first ray. Centralization with tendon transfer is a popular method for maintaining the correct position of radial club hand. On the other hand, various corrections were devised, e.g. radialization after distraction to emphasize the fact that the head of the ulna is positioned under the radial carpal bones and is no longer placed in a slot in the center of the carpus, microvascular epiphysis transfer, gradual correction using Ilizarov method, for Bayne Type III or Type IV...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28592224/postoperative-complications-associated-with-external-skeletal-fixators-in-cats
#18
Lee Beever, Kirsty Giles, Richard Meeson
OBJECTIVES: The objective of this study was to quantify complications associated with external skeletal fixators (ESFs) in cats and to identify potential risk factors. METHODS: A retrospective review of medical records and radiographs following ESF placement was performed. RESULTS: Case records of 140 cats were reviewed; fixator-associated complications (FACs) occurred in 19% of cats. The region of ESF placement was significantly associated with complication development...
July 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28583055/fracture-of-the-distal-ulna-metaphysis-in-the-setting-of-distal-radius-fractures
#19
Nader Paksima, Sonya Khurana, Michael Soojian, Vipul Patel, Kenneth Egol
BACKGROUND: Fracture of the metaphyseal region of the distal ulna is an uncommon injury that has been reported to occur concomitantly with distal radius fracture. We aimed to report the incidence and types of distal ulnar head and neck fractures associated with distal radius fractures and compare outcomes in operatively versus non-operatively treated patients. METHODS: Over a 5-year period a distal radius fracture registry was maintained at our institution. Eleven of 512 consecutive patients had metaphyseal distal ulna fractures in association with distal radius fractures and at least 1-year follow-up...
April 2017: Bulletin of the Hospital for Joint Diseases
https://www.readbyqxmd.com/read/28580792/biomechanical-analysis-of-the-universal-2-implant-in-total-wrist-arthroplasty-a-finite-element-study
#20
M K Gislason, E Foster, M Bransby-Zachary, D H Nash
Little is known about the mechanics of in vivo loading on total wrist prostheses where many studies have looked at the mechanics of other types of arthroplasty such as for the hip and the knee which has contributed to the overall success of these types of procedures. Currently surgeons would prefer to carry out arthrodesis on the wrist rather than consider arthroplasty as clinical data have shown that the outcome of total wrist arthroplasty is poorer than compared to the hip and knee. More research is needed on the loading mechanisms of the implants in order to enhance the design of future generation implants...
August 2017: Computer Methods in Biomechanics and Biomedical Engineering
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