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https://www.readbyqxmd.com/read/28617181/a-novel-surgical-approach-for-treating-distal-radial-extraarticular-malunion-oblique-osteotomy-with-buttress-plate-stabilization
#1
Chi-Chuan Wu
PURPOSE: Distal radial extraarticular malunions are not uncommon. However, requirements of surgical correction depend on multiple conditions. Traditionally, surgical techniques include closing or opening wedge osteotomies. Each has unique advantages and disadvantages. An oblique osteotomy was developed to simplify the revision surgery. METHODS: Forty-eight consecutive adult patients with 48 malunions were surgically treated. An oblique osteotomy of 45° vertical to the radial longitudinal axis was performed from medio-distally to latero-proximally...
May 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28614189/a-dose-response-study-of-topical-allyl-isothiocyanate-mustard-oil-as-human-surrogate-model-of-pain-hyperalgesia-and-neurogenic-inflammation
#2
H H Andersen, S Lo Vecchio, P Gazerani, L Arendt-Nielsen
Despite being a ubiquitous animal pain model, the natural TRPA1-agonist allyl-isothiocyanate (AITC, also known as "mustard oil") has only been sparsely investigated as a potential human surrogate model of pain, sensitization, and neurogenic inflammation. Its dose-response as an algogenic, sensitizing irritant remains to be elucidated in human skin. Three concentrations of AITC (10%, 50%, 90%) and vehicle (paraffin) were applied for 5 min to 3x3 cm areas on the volar forearms in 14 healthy volunteers, and evoked pain intensity (visual analog scale 0-100 mm) and pain quality were assessed...
June 9, 2017: Pain
https://www.readbyqxmd.com/read/28606437/the-effect-of-price-on-surgeons-choice-of-implants-a%C3%A2-randomized-controlled-survey
#3
Amy S Wasterlain, Eitan Melamed, Ricardo Bello, Raj Karia, John T Capo
PURPOSE: Surgical costs are under scrutiny and surgeons are being held increasingly responsible for cost containment. In some instances, implants are the largest component of total procedure cost, yet previous studies reveal that surgeons' knowledge of implant prices is poor. Our study aims to (1) understand drivers behind implant selection and (2) assess whether educating surgeons about implant costs affects implant selection. METHODS: We surveyed 226 orthopedic surgeons across 6 continents...
June 9, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28603573/extra-articular-tenosynovial-chondromatosis-of-the-finger-a-case-series-study-of-three-cases-one-including-excessive-osseous-invasion
#4
Akio Sakamoto, Takahiko Naka, Eisuke Shiba, Masanori Hisaoka, Shuichi Matsuda
BACKGROUND: Synovial chondromatosis is characterized by cartilaginous metaplasia in synovial tissues. Extra-articular tenosynovial chondromatosis is considered to be an anatomical counterpart of articular synovial chondromatosis. Extra-articular tenosynovial chondromatosis occurs preferentially in the hand, although its frequency is low. RESULTS: We report three cases of extra-articular tenosynovial chondromatosis. A 65-year-old female presented with a history of symptoms over 40 years related to the dorsum of her index finger (Case 1), A 46-year-old female presented with a 6-month history of symptoms at the volar surface of her middle finger (Case 2), and a 66-year-old male presented with a 3-month history of symptoms in a dorsal ring finger...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28593429/ultrasound-imaging-of-the-thenar-motor-branch-of-the-median-nerve-a-cadaveric-study
#5
David Petrover, Jonathan Bellity, Marie Vigan, Remy Nizard, Antoine Hakime
INTRODUCTION: Anatomic variations of the median nerve (MN) increase the risk of iatrogenic injury during carpal tunnel release surgery. We investigated whether high-frequency ultrasonography could identify anatomic variations of the MN and its thenar motor branch (MBMN) in the carpal tunnel. METHODS: For each volar wrist of healthy non-embalmed cadavers, the type of MN variant (Lanz classification), course and orientation of the MBMN, and presence of hypertrophic muscles were scored by 18-MHz ultrasound and then by dissection...
June 7, 2017: European Radiology
https://www.readbyqxmd.com/read/28585151/microstructure-study-of-normal-lunates-with-micro-computed-tomography
#6
Zi-Run Xiao, Ge Xiong, Shi-Gong Guo, Chuan-Chao Du, You-le Zhang
In order to study the microstructure characteristics of normal lunate bones, eight fresh cadaver normal lunates were scanned with micro-computed tomography. High-resolution images of the micro-structure of normal lunates were obtained and we analyzed the nutrient foramina. Then nine regions of interest (ROI) were chosen in the central sagittal plane so that we could obtain the parameters of trabecular bones of ROIs. The distal lamellar-like compact structure had statistically significant differences when it was compared with the ROIs in the volar and dorsal ends of the distal cortex...
June 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28580792/biomechanical-analysis-of-the-universal-2-implant-in-total-wrist-arthroplasty-a-finite-element-study
#7
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
https://www.readbyqxmd.com/read/28580380/recurrent-dislocation-of-the-proximal-interphalangeal-joint-of-the-finger-a-rare-issue-in-hand-surgery
#8
Hossein Saremi, Ali Karbalaeikhani
Recurrent dislocation is not common in small joints. This report presents a recurrent dislocation of the proximal interphalangeal joint of the ring finger in a 23-years-old man. Recurrent dislocation was addressed successfully by repairing the avulsed volar plate to the base of the middle phalanx, followed by 6 weeks of splint immobilization.
March 2017: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/28578470/which-immobilization-is-better-for-distal-radius-fracture-a-prospective-randomized-trial
#9
Carlo Gamba, Felipe Andrés Mingo Fernandez, Marta Cuenca Llavall, Xavier Lizano Diez, Fernando Santana Perez
INTRODUCTION: The aim of this study was to determine whether an above-elbow cast (AEC) is better than a below-elbow cast (BEC) at maintaining the initial reduction in the orthopaedic management of a distal radius fracture (DRF). METHODS: It is a prospective randomized study carried out in a single emergency trauma department. There were 72 patients older than 55 years of age (55-96) with a distal radius fracture treated orthopaedically. They were randomized into two groups: group B (AEC 32 patients) and group A (BEC 40 patients)...
June 3, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28573748/conditioned-pain-modulation-dampens-the-thermal-grill-illusion
#10
D E Harper, M Hollins
BACKGROUND: The thermal grill illusion (TGI) refers to the perception of burning heat and often pain that arises from simultaneous cutaneous application of innocuous warm and cool stimuli. This study utilized conditioned pain modulation (CPM) to help elucidate the TGI's underlying neural mechanisms, including the debated role of ascending nociceptive signals in generating the illusion. METHODS: To trigger CPM, subjects placed the left hand in noxious cold (6 °C) water before placing the right volar forearm onto a thermal grill...
June 2, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28570448/free-lateral-digital-flap-for-reconstruction-of-the-fingers
#11
Hidehiko Yoshimatsu, Takuya Iida, Akitatsu Hayashi, Takafumi Saito
BACKGROUND: The region between the proximal interphalangeal (PIP) and the metacarpophalangeal (MP) creases has greater laxity than other regions in the fingers, allowing for primary closure of the donor site. We postulated if we could consistently locate perforators from the region between the PIP and the MP crease on the radial side of the middle and ring fingers, on which a scar would be less conspicuous than one on the radial side of the index finger, these regions would be ideal donor sites for digital reconstruction using very small flaps...
May 31, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28569788/disease-linked-connexin26-s17f-promotes-volar-skin-abnormalities-and-mild-wound-healing-defects-in-mice
#12
Eric Press, Katanya C Alaga, Kevin Barr, Qing Shao, Felicitas Bosen, Klaus Willecke, Dale W Laird
Several mutant mice have been generated to model connexin (Cx)-linked skin diseases; however, the role of connexins in skin maintenance and during wound healing remains to be fully elucidated. Here we generated a novel, viable, and fertile mouse (Cx26(CK14-S17F/+)) with the keratitis-ichthyosis-deafness mutant (Cx26S17F) driven by the cytokeratin 14 promoter. This mutant mouse mirrors several Cx26-linked human skin pathologies suggesting that the etiology of Cx26-linked skin disease indeed stems from epidermal expression of the Cx26 mutant...
June 1, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28560033/comparison-of-outcome-of-vlcp-versus-pkef-in-the-treatment-of-ao-type-c2-3-distal-radial-fractures
#13
Zhibing Tang, Jinlian Liu, Huilin Yang
PURPOSES: Fractures of the distal radius are extremely common in adults. However, the optimal management remains controversial, especially in AO type C2-3 (Type23 C2 or C3 of distal radial fracture, according to AO classifications). The purpose of this study was to compare the results of the volar locking compression plate (VLCP) and percutaneous Kirschner-wires combined with external fixation (PKEF) in the treatment of the AO type C2-3 fractures. METHODS: From July 2012 to June 2015, 62 patients with AO type C2-3 fractures, treated by VLCP or PKEF, were included in this retrospective study...
June 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28554872/safe-window-for-the-volar-needle-approach-to-pronator-quadratus-using-ultrasonography
#14
Seok Jun Lee, Ki Hoon Kim, In Yae Cheong, ByungKyu Park, Dong Hwee Kim
OBJECTIVE: To investigate PQ anatomy and determine the proper volar needle insertion point based on landmarks, the tip of the ulnar styloid (U line), and the ulnar margin of the palmaris longus tendon (uPL) using ultrasonography. DESIGN: Descriptive study. SETTING: Department of Physical Medicine & Rehabilitation, Korea University, Seoul, Korea SUBJECTS: Twenty-five healthy subjects (13 men, 12 women; 50 forearms) INTERVENTIONS: Ultrasonography MAIN OUTCOME MEASURES: The proximal and distal volar surface points of origin (O_prox and O_dist), the proximal and distal insertion sites (I_prox and I_dist), and the center of the PQ (PQ_M) were determined...
May 26, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28552023/peri-implant-radial-and-ulnar-shaft-fractures-after-volar-locking-plate-fixation-of-the-distal-radius
#15
S Barrera-Ochoa, J H Nuñez, X Mir
No abstract text is available yet for this article.
May 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28551317/elastic-retrograde-intramedullary-percutaneous-pinning-for-fifth-metacarpal-neck-fractures-a-series-of-32-patients
#16
M-A Poumellec, N Dreant
The aim of our study was to evaluate an original surgical technique for the treatment of fifth metacarpal neck fractures: elastic retrograde intramedullary percutaneous pinning (ERIPP). From January 2014 to January 2016, patients with a fifth metacarpal neck fracture with greater than 30° volar displacement and/or clinodactyly were included. All patients underwent an ERIPP procedure. With this technique, K-wires are used as joysticks to assist reduction when the Jahss maneuver is insufficient. Clinical evaluation incorporated the DASH score, range of motion and grip strength at 3months...
May 24, 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28549885/the-radial-approach-to-the-wrist-with-styloidectomy-a-cadaver-study
#17
F-A Lecoq, A Sébilo, P Bellemère
The radial approach to the wrist is already used in several surgical techniques such as radial styloidectomy and Zaidemberg's vascularized radial graft. The aim of our work was to describe the surgical anatomy of that approach and to determine the acceptable limits of radial oblique styloidectomy that does not damage the anterior and posterior radiocarpal ligaments. This radial approach was performed on 11 cadaver specimens. The superficial branches of the radial nerve and the antebrachial cephalic vein were carefully located in the superficial plane...
May 23, 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28549397/assessment-of-distal-radioulnar-joint-stability-after-reconstruction-with-the-brachioradialis-wrap
#18
Charity S Burke, Keith A Zoeller, Seid W Waddell, John A Nyland, Michael J Voor, Amitava Gupta
BACKGROUND: The brachioradialis (BR) wrap technique is an option to restore the stability of the distal radioulnar joint (DRUJ). The technique capitalizes on the BR's advantageous insertion point on the radial styloid and the ability of the BR to be harvested with minimal to no deficit. The tendon can then be wrapped around the radius and ulna, tunneling under the pronator quadratus and extensor compartments and secured back into its insertion to provide stability. In this cadaveric study, we used micro-computed tomography (CT) to assess the stability restored by this procedure...
May 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28538571/angiosome-based-allografts-vascularized-composite-allotransplantation-for-tailored-subunit-reconstruction-with-volkmann-ischemic-contracture-as-a-case-in-point
#19
G Ian Taylor, David S Sparks, Adam C Gascoigne, Russell J Corlett, Mark W Ashton
BACKGROUND: As we enter an age with new approaches to tissue reconstruction, the emphasis on the adage "like for like" has become even more relevant. This study illustrates the potential for several tailored vascularized composite allotransplantation reconstructive techniques and, in particular, for the management of Volkmann contracture. METHODS: Twenty fresh cadaver dissections and 30 archival lead oxide radiographic studies were examined to (1) identify potential upper limb vascularized composite allotransplantation donor sites (i...
June 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28530766/right-ring-finger-volar-mass-in-a-14-year-old-boy
#20
Mary P Fox, Jack E McKay, Randall D Craver, Nicholas D Pappas
A trigger digit is relatively uncommon in adolescents and often has a different etiology in that age group vs adults. In the pediatric population, trigger digits frequently arise from a variety of underlying anatomic situations, including thickening of the flexor digitorum superficialis or flexor digitorum profundus tendons, an abnormal relationship between the flexor digitorum superficialis and flexor digitorum profundus tendons, a proximal flexor digitorum superficialis decussation, or constriction of the pulleys...
May 20, 2017: Orthopedics
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