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https://www.readbyqxmd.com/read/29122452/estimated-landmark-calibration-of-biomechanical-models-for-inverse-kinematics
#1
Ursula Trinler, Richard Baker
Inverse kinematics is emerging as the optimal method in movement analysis to fit a multi-segment biomechanical model to experimental marker positions. A key part of this process is calibrating the model to the dimensions of the individual being analysed which requires scaling of the model, pose estimation and localisation of tracking markers within the relevant segment coordinate systems. The aim of this study is to propose a generic technique for this process and test a specific application to the OpenSim model Gait2392...
November 6, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/29118644/morphology-of-the-limbs-in-the-semi-fossorial-desert-rodent-species-of-tympanoctomys-octodontidae-rodentia
#2
M Julieta Perez, Ruben M Barquez, M Monica Diaz
Here, a detailed description of the forelimbs and hindlimbs of all living species of the genus Tympanoctomys are presented. These rodents, highly adapted to desert environments, are semi-fossorial with capacity to move on the surface as well as to build burrows. The shape, structure, and size of the limbs are described. Contrary to what was expected for scratch digging semi-fossorial species, Tympanoctomys have slender humerus, radius and ulna; with narrow epicondyles of the humerus and short olecranon of the ulna with poorly developed processes...
2017: ZooKeys
https://www.readbyqxmd.com/read/29117014/what-s-new-in-pediatric-upper-extremity-sports-injuries
#3
Jennifer J Beck, Connor G Richmond, Marc A Tompkins, Ann Heyer, Kevin G Shea, Aristides I Cruz
BACKGROUND: Sports injuries are common in pediatric and adolescent patients and the evaluation and treatment of these injuries continues to evolve. The purpose of this review is to provide a comprehensive appraisal of the most recent literature, highlighting updates on sports-related upper extremity injuries in pediatric patients. METHODS: An electronic search of the PubMed, EMBASE, and Google Scholar databases was performed for keywords related to pediatric overhead athletes, osteochondritis dissecans (OCD) of the capitellum, medial epicondyle fractures, shoulder instability, and clavicle fractures...
November 7, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29108884/peritendinous-injection-of-platelet-rich-plasma-to-treat-tendinopathy-a-retrospective-review
#4
Mehmet Can Unlu, Aybars Kivrak, Mahmut Enes Kayaalp, Olgar Birsel, Isık Akgun
OBJECTIVE: The aim of this study was to determine factors associated with the likelihood of a better clinical outcome after the peritendinous injection of PRP for the treatment of chronic tendinopathy and identify whether PRP represents an effective treatment option for chronic tendinopathies. METHODS: The study included 214 patients (86 males and 128 females; mean age: 39.3 (18-75) years) who received PRP injections for tendinopathy refractory to conventional treatments...
November 3, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/29075520/the-feasibility-of-using-high-resolution-ultrasonography-to-assess-ulnar-nerve-in-patients-with-diabetes-mellitus
#5
Jun Chen, Chun-Lei Wang, Shan Wu, Shan He, Jun Ren
OBJECTIVE: The aim of this study was to investigate the usefulness of high-resolution ultrasonography for the diagnosis of polyneuropathy in diabetes mellitus patients by the examination of the ulnar nerves. METHOD: We recruited 100 healthy age-matched volunteers (50 women and 50 men) with 200 arms without diabetes or cubital tunnel syndrome as the control group. We assessed the upper limbs of 100 diabetes mellitus patients (45 women and 55 men), 40 of whom had electrophysiologically confirmed diabetic peripheral neuropathy and 60 had no diabetic peripheral neuropathy in the upper limbs...
September 2017: Journal of Ultrasonography
https://www.readbyqxmd.com/read/29073240/the-course-of-the-radial-nerve-in-the-distal-humerus-a-novel-anatomy-based-radiographic-assessment
#6
H P Theeuwes, B van der Ende, J W Potters, A J Kerver, J H J M Bessems, G-J Kleinrensink
METHODS AND FINDINGS: Measurements were done on both arms of ten specially embalmed specimens. Arms were dissected and radiopaque wires attached to the radial nerve in the distal part of the upper arm. Digital radiographs were obtained to determine the course of the radial nerve in the distal 20 cm of the humerus in relation to bony landmarks; medial epicondyle and capitellum-trochlea projection (CCT). Analysis was done with ImageJ and Microsoft Excel software. We also compared humeral nail specifications from different companies with the course of the radial nerve to predict possible radial nerve damage...
2017: PloS One
https://www.readbyqxmd.com/read/29065040/a-cadaveric-biomechanical-analysis-of-three-lateral-ulnar-collateral-ligament-reconstructions
#7
Aakash Chauhan, Mark E Baratz, Patrick Schimoler, David Ruch, Mark Carl Miller
OBJECTIVE: To biomechanically assess the angular stability provided by three techniques for reconstruction of the LUCL. METHODS: Eight cadaveric elbows were tested with the LCL-C intact, disrupted from the origin at the lateral epicondyle, and reconstructed with three different techniques utilizing ulnar bone tunnels: a suture "lasso" or palmaris longus (PL) tendon "lasso" both docked with a metal button at the origin, and a doubled-over PL tendon docked with metal buttons at both the origin and ulnar insertion...
October 14, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/29064541/hypertrophic-reversed-palmaris-longus-muscle-a-cadaveric-finding
#8
Lucas Pires, Jan-Peter Perissé, Gabriel Costa Serrão Araújo, Jorge Manaia, Albino Fonseca Júnior, Marcio Antonio Babinski
Variations of the forearm musculature are vastly described in the literature. The palmaris longus muscle is one of the most variable structures of the human body. It usually rises from the medial epicondyle of the humerus and inserts itself into the palmar aponeurosis. Anatomy textbooks and recent papers state that this muscle may act as a weak wrist flexor. The present work aims to report an anatomical variation where the palmaris longus muscle was abnormally hypertrophied and was completely fleshy throughout the whole forearm...
October 24, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/29054383/arthroscopic-surgical-treatment-of-medial-epicondylitis
#9
Alexandre Tadeu do Nascimento, Gustavo Kogake Claudio
BACKGROUND: The study purpose was to evaluate the outcomes of patients who received arthroscopic surgical treatment for medial epicondylitis refractory to conservative treatment. METHODS: This was a retrospective study of 7 patients who underwent arthroscopic surgical débridement of the common flexor tendon for treatment of medial epicondylitis refractory to conservative treatment. The patients were assessed using the Disabilities of the Arm, Shoulder and Hand score; visual analog scale for pain; and Short Form 36 Health Survey...
October 17, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29051902/trends-in-surgical-practices-for-lateral-epicondylitis-among-newly-trained-orthopaedic-surgeons
#10
Dean Wang, Ryan M Degen, Christopher L Camp, Michael H McGraw, David W Altchek, Joshua S Dines
BACKGROUND: Much controversy exists regarding the optimal surgical intervention for lateral epicondylitis because of a multitude of options available and the lack of comparative studies. Knowledge of the current practice trends would help guide the design of comparative studies needed to determine which surgical technique results in the best outcome. PURPOSE: To review the latest practice trends for the surgical treatment of lateral epicondylitis among newly trained surgeons in the United States utilizing the American Board of Orthopaedic Surgery (ABOS) database...
October 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29051873/median-nerve-entrapment-after-elbow-dislocation-and-the-role-of-ultrasonography-a-case-report
#11
Vivek Dubey, Ali Saify, Ashwin Samant, Sunil Shahane
INTRODUCTION: Median nerve entrapment in the cases of posterior dislocation of elbow is a rare entity. The diagnosis is usually delayed. We describe here a case of median nerve entrapment in the posteromedial dislocation of elbow in a 10-year-old male child and the role of ultrasonography (USG) in localizing the median nerve in the elbow. The nerve release was done by osteotomy of medial epicondyle. USG thus proved to be a useful tool in the management of nerve injury. CASE REPORT: The authors present here a case of 10-year-old child with a history of dislocation of right elbow that was reduced elsewhere and the child presented to us with stiffness and restriction of movements at the elbow with the features of high median nerve injury...
May 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/29049267/variation-among-pediatric-orthopaedic-surgeons-when-treating-medial-epicondyle-fractures
#12
Meghan Hughes, Karan Dua, Nathan N O'Hara, Brian K Brighton, Theodore J Ganley, William L Hennrikus, Martin J Herman, Joshua E Hyman, J Todd Lawrence, Charles T Mehlman, Kenneth J Noonan, Norman Y Otsuka, Richard M Schwend, M Wade Shrader, Brian G Smith, Paul D Sponseller, Joshua M Abzug
BACKGROUND: Medial epicondyle fractures are a common pediatric and adolescent injury accounting for 11% to 20% of elbow fractures in this population. This purpose of this study was to determine the variability among pediatric orthopaedic surgeons when treating pediatric medial epicondyle fractures. METHODS: A discrete choice experiment was conducted to determine which patient and injury attributes influence the management of medial epicondyle fractures by pediatric orthopaedic surgeons...
October 18, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29037630/hypoalgesic-effects-of-three-different-manual-therapy-techniques-on-cervical-spine-and-psychological-interaction-a-randomized-clinical-trial
#13
Jose Luis Alonso-Perez, Almudena Lopez-Lopez, Roy La Touche, Sergio Lerma-Lara, Emilio Suarez, Javier Rojas, Mark D Bishop, Jorge Hugo Villafañe, Josué Fernández-Carnero
OBJECTIVE: The purpose of this study was to evaluate the extent to which psychological factors interact with a particular manual therapy (MT) technique to induce hypoalgesia in healthy subjects. METHODS: Seventy-five healthy volunteers (36 female, 39 males), were recruited in this double-blind, controlled and parallel study. Subjects were randomly assigned to receive: High velocity low amplitude technique (HVLA), joint mobilization, or Cervical Lateral glide mobilization (CLGM)...
October 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29027008/lateral-epicondylitis-associations-of-mr-imaging-and-clinical-assessments-with-treatment-options-in-patients-receiving-conservative-and-arthroscopic-managements
#14
Ji Young Jeon, Min Hee Lee, In-Ho Jeon, Hye Won Chung, Sang Hoon Lee, Myung Jin Shin
OBJECTIVES: We assessed the implications of MR imaging with clinical history in lateral epicondylitis management by evaluating imaging and clinical features in patients with lateral epicondylitis treated conservatively or operatively. METHODS: Sixty patients with lateral epicondylitis treated conservatively (n = 38) or operatively (n = 22) from 2011-2015 were included. MR imaging findings of common extensor tendon (CET), lateral collateral ligament (LCL) complex, muscle oedema, ulnar nerve and elbow joint were reviewed...
October 12, 2017: European Radiology
https://www.readbyqxmd.com/read/29022039/paediatric-supracondylar-humeral-fractures-a-technique-for-safe-medial-pin-passage-with-zero-incidence-of-iatrogenic-ulnar-nerve-injury
#15
Chin Yee Woo, Han Loong Ho, Mohammad Bin Zainuddin Ashik, Kevin Boon Leong Lim
INTRODUCTION: The cross Kirschner wire (k-wire) configuration in closed reduction and percutaneous pinning of paediatric supracondylar humeral fracture afford superior stability. However, medial pin placement presents a risk of iatrogenic ulnar nerve injury. This study describes, in step-by-step detail, another safe method of percutaneous medial pin insertion. METHODS: The technique involved placing the patient's arm in external rotation, with elbow flexed no more than 45° after closed reduction...
October 12, 2017: Singapore Medical Journal
https://www.readbyqxmd.com/read/29016187/quantitative-and-qualitative-analysis-of-the-medial-patellar-ligaments-an-anatomic-and-radiographic-study
#16
Bradley M Kruckeberg, Jorge Chahla, Gilbert Moatshe, Mark E Cinque, Kyle J Muckenhirn, Jonathan A Godin, Taylor J Ridley, Alex W Brady, Elizabeth A Arendt, Robert F LaPrade
BACKGROUND: The qualitative and quantitative anatomy of the medial patellar stabilizers has been reported; however, a quantitative analysis of the anatomic and radiographic attachments of all 4 ligaments relative to anatomic and osseous landmarks, as well as to one another, has yet to be performed. PURPOSE: To perform a qualitative and quantitative anatomic and radiographic evaluation of the medial patellofemoral ligament (MPFL), medial patellotibial ligament (MPTL), medial patellomeniscal ligament (MPML), and medial quadriceps tendon femoral ligament (MQTFL) attachment sites, with attention to their relationship to pertinent osseous and soft tissue landmarks...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28992843/-extracorporeal-shock-wave-therapy-in-chronic-achilles-tendinopathy
#17
EDITORIAL
Lotte Hasselbalch, Per Hölmich
Extracorporeal shock wave therapy (ESWT) has shown promising results in treating epicondylitis lateralis humeri and fasciitis plantaris. This study investigates whether the evidence supports ESWT as part of the conservative treatment regime of chronic Achilles tendinopathy. The differences in diagnosing chronic Achilles tendinopathy, the use of different ESWT-machines and the difference in the evaluating methods for pain make it difficult to compare the studies. There is, however, a clear tendency toward ESWT having a positive treatment effect on chronic Achilles tendinopathy at both the insertion and the mid-portion...
October 2, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28990575/a-systematic-review-of-the-concept-and-clinical-applications-of-bone-marrow-aspirate-concentrate-in-tendon-pathology
#18
Mohamed A Imam, James Holton, Saman Horriat, Ahmed S Negida, Florian Grubhofer, Rohit Gupta, Ali Narvani, Martyn Snow
Tendon pathologies are a group of musculoskeletal conditions frequently seen in clinical practice. They can be broadly classified into traumatic, degenerative and overuse-related tendinopathies. Rotator cuff tears, Achilles tendinopathy and tennis elbow are common examples of these conditions. Conventional treatments have shown inconsistent outcomes and might fail to provide satisfactory clinical improvement. With the growing trend towards the use of mesenchymal stem cells (MSCs) in other branches of medicine, there is an increasing interest in treating tendon pathologies using the bone marrow MSC...
2017: SICOT-J
https://www.readbyqxmd.com/read/28990574/an-evidence-based-evaluation-on-the-use-of-platelet-rich-plasma-in-orthopedics-a-review-of-the-literature
#19
Nasir Hussain, Herman Johal, Mohit Bhandari
Within orthopedics, the use of platelet-rich plasma (PRP) has been rapidly increasing in popularity, however, its true effectiveness has yet to be fully established. Several studies find that injecting PRP to the site of injury does not provide any significant benefit with respect to clinical outcomes; however, many others report the contrary. Due to the conflicting evidence and multiple meta-analyses conducted on the topic, a literature review of high-quality evidence on the use of PRP for common orthopaedic conditions was performed...
2017: SICOT-J
https://www.readbyqxmd.com/read/28956477/effectiveness-of-myofascial-release-in-treatment-of-chronic-musculoskeletal-pain-a-systematic-review
#20
Katri Laimi, Annika Mäkilä, Esa Bärlund, Niina Katajapuu, Airi Oksanen, Valpuri Seikkula, Jari Karppinen, Mikhail Saltychev
OBJECTIVE: To evaluate the evidence on the effectiveness of myofascial release therapy to relieve chronic musculoskeletal pain and to improve joint mobility, functioning level, and quality of life in pain sufferers. Data sources and review: Randomized controlled trials were systematically gathered from CENTRAL, Medline, Embase, CINAHL, Scopus, and PEDro databases. The methodological quality of articles was assessed according to the Cochrane Collaboration's domain-based framework. In addition, the effect sizes of main outcomes were calculated based on reported means and variances at baseline and in follow-up...
September 1, 2017: Clinical Rehabilitation
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