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https://www.readbyqxmd.com/read/28728408/evaluation-of-trace-mineral-source-and-preharvest-deletion-of-trace-minerals-from-finishing-diets-on-tissue-mineral-status-in-pigs
#1
Y L Ma, Merlin D Lindemann, Sharon F Webb, Gregg Rentfrow
Objective: An experiment was conducted to evaluate dietary supplemental trace mineral source and deletion on mineral content in tissues. Methods: Weanling crossbred pigs [n = 144; 72 barrows and 72 gilts; body weight (BW) = 7.4 ± 1.05 kg] were used. A basal diet was prepared, and trace mineral premix containing either inorganic (ITM) or organic (OTM) trace minerals (Cu, Fe, Mn, and Zn) was added to the basal diet. Pigs were blocked by sex and BW and randomly allotted to 24 pens for a total of 6 pigs per pen, and fed a diet containing either ITM or OTM supplemented at the 1998 NRC requirement estimates for each of 5 BW phases (Phase I to V) from 7 to 120 kg...
July 6, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28725507/giant-cell-tumor-of-the-capitate-treated-with-excision-and-midcarpal-fusion
#2
Ayat Allah Oufkir, Cyril Lazerges, Bertrand Coulet, Michel Chammas
Background  Giant cell tumor (GCT) of bone is rare in the carpus, and only 11 cases have been reported in the capitate bone. The problem with this location is the high recurrence rate due to easy extension to the adjacent joint spaces and bones. We describe a case of GCT on the capitate bone and the treatment in comparison with the previously reported cases. Case Description  The case report concerns a 48-year-old woman with a GCT of the capitate diagnosed on curettage. The treatment consisted of large resection with the lunatum and third metacarpal arthrodesis, with a successful union at 2 years follow-up, no recurrence, and an improved function of the wrist...
August 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/28725499/the-effect-of-metacarpophalangeal-joint-hyperextension-on-outcomes-in-the-surgical-treatment-of-carpometacarpal-joint-arthritis
#3
David M Brogan, Rose M van Hogezand, Nikola Babovic, Brian Carlsen, Sanjeev Kakar
Purpose  In the surgical treatment of thumb carpometacarpal (CMC) joint arthritis, the effect of mild preoperative metacarpophalangeal (MCP) hyperextension on postoperative functional outcomes is unknown. We sought to examine outcomes after surgical treatment of CMC arthritis in patients with and without mild preexisting MCP deformity. Methods  A retrospective review was conducted to analyze the functional outcomes of patients treated for CMC arthritis at a single institution from March 1998 to May 2009...
August 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/28720007/extensor-pollicis-brevis-spiral-tenodesis-for-combined-metacarpophalangeal-instability-and-trapeziometacarpal-arthritis
#4
Mark Henry
BACKGROUND: In more advanced stages of trapeziometacarpal arthritis, the thumb metacarpal may develop an adduction contracture, leading to secondary hyperextension instability of the metacarpophalangeal joint. Following trapeziometacarpal arthroplasty, uncorrected substantial metacarpophalangeal hyperextension may contribute to ongoing Z-collapse deformity, weakness of pinch and grip, and patient perception of diminished function. METHODS: We prospectively analyzed a consecutive case series of 55 trapeziometacarpal arthroplasty patients (mean age, 60 years; 7 males) who received simultaneous extensor pollicis brevis spiral tenodesis for thumb metacarpophalangeal hyperextension of at least 50°...
March 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28720003/current-trends-in-the-management-of-ballistic-fractures-of-the-hand-and-wrist-experiences-of-a-high-volume-level-i-trauma-center
#5
Paul A Ghareeb, Charles Daly, Albert Liao, Diane Payne
BACKGROUND: Ballistic fractures of the carpus and hand are routinely treated in large urban centers. These injuries can be challenging due to many factors. Various treatment options exist for these complicated injuries, but there are limited data available. This report analyzes patient demographics, treatments, and outcomes at a large urban trauma center. METHODS: All ballistic fractures of the hand and wrist of the patients who presented to a single center from 2011 to 2014 were retrospectively reviewed...
March 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28719994/giant-cell-tumor-of-the-metacarpal-case-report
#6
Laura W Lewallen, Eric R Wagner, Steven L Moran
BACKGROUND: Giant cell tumor (GCT) of bone is a benign, though locally aggressive tumor, classically described as an eccentric lytic lesion, often with cortical expansion and destruction. It typically involves the metaphysis or epiphysis of long bones in skeletally mature patients, with a slight female predominance. The incidence in the small bones of the hand has been reported to be 2% to 5%. METHODS: Treatment options have evolved in recent years, and currently include intralesional curettage with or without adjuvant therapy, wide resection, and occasionally amputation...
March 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28719990/radiographic-and-clinical-assessment-of-intramedullary-nail-fixation-for-the-treatment-of-unstable-metacarpal-fractures
#7
Ather Mirza, Justin Mirza, Chris Healy, Vishaaq Mathew, Brian Lee
BACKGROUND: The purpose of the article was to evaluate clinical and radiographic outcomes in a case series of unstable metacarpal fractures treated with flexible intramedullary nail (IMN) fixation. METHODS: A total of 55 patients with unstable metacarpal fractures between 2003 and 2010 were treated with IMN fixation and followed for a minimum of 1 year. The outcomes were assessed via a radiological study of longitudinal and angular collapse, Disabilities of the Arm, Shoulder, and Hand (DASH) score, total active range of motion (ROM) of the wrist, and grip strength testing...
March 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28718330/anatomic-assessment-of-k-wire-trajectory-for-transverse-percutaneous-fixation-of-small-finger-metacarpal-fractures-a-cadaveric-study
#8
Louis C Grandizio, Amy Speeckaert, Zach Kozick, Joel C Klena
BACKGROUND: The purpose of this cadaveric study is to evaluate the trajectory of percutaneous transverse Kirschner wire (K-wire) placement for fifth metacarpal fractures relative to the sagittal profile of the fifth metacarpal in order to develop a targeting strategy for the treatment of fifth metacarpal fractures. METHODS: Using 12 unmatched fresh human upper limbs, we evaluated the trajectory of percutaneous transverse K-wire placement relative to the sagittal profile of the fifth metacarpal in order to develop a targeting strategy for treatment of fifth metacarpal fractures...
February 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28718329/assessment-of-forearm-rotational-control-using-4-upper-extremity-immobilization-constructs
#9
Ayesha M Rahman, Nicole Montero-Lopez, Richard M Hinds, Michael Gottschalk, Eitan Melamed, John T Capo
BACKGROUND: Forearm immobilization techniques are commonly used to manage distal radius, scaphoid, and metacarpal fractures. The purpose of our study was to compare the degree of rotational immobilization provided by a sugar-tong splint (STS), short arm cast (SAC), Munster cast (MC), and long arm cast (LAC) at the level of the distal radioulnar joint (DRUJ), carpus, and metacarpals. METHODS: Seven cadaveric upper extremity specimens were mounted to a custom jig with the ulnohumeral joint fixated in 90° of flexion...
February 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28718310/comparison-of-computed-tomography-articular-surface-geometry-of-male-versus-female-thumb-carpometacarpal-joints
#10
Jessica G Shih, James G Mainprize, Paul A Binhammer
BACKGROUND: Given the predilection of first carpometacarpal (CMC) joint osteoarthritis in women compared with men, we aim to determine the differences in first CMC joint surface geometry and congruence between young healthy males and females. METHODS: Wrist computed tomographic (CT) scan data of 11 men and 11 women aged 20 to 35 years were imported into 3-dimensional software programs. The first metacarpal and the trapezium were aligned in a standardized position according to landmarks at key points on Gaussian and maximum curvature maps...
February 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28718309/intra-articular-fracture-of-the-base-of-the-first-metacarpal-bone-treatment-through-a-volar-approach
#11
Violeta Levy, Marcelo Mazzola, Martín Gonzalez
BACKGROUND: Management of Bennett fractures has been controversial. Early reports supported closed reduction and casting with or without percutaneous pinning. Later, open reduction and internal fixation was advocated. The purpose of this article is to assess the surgical treatment using a direct volar approach. METHODS: Between March 2008 and December 2014, 21 patients with intra-articular first metacarpal fractures displaced more than 1 mm were operated on using a direct volar approach...
January 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28716512/results-of-the-dubert-procedure-for-chronic-painful-fracture-dislocations-of-the-fifth-carpometacarpal-joint-a-report-of-6-cases
#12
N Meraghni, G Bacle, E Marteau, Y Bouju, J Laulan
Carpometacarpal (CMC) fracture-dislocations of the fifth ray are common. For chronic injuries, Dubert proposed combining resection arthroplasty of the base of the fifth metacarpal (M5) with synostosis with the fourth metacarpal (M4). Our aim was to evaluate the results of this procedure. Between 1994 and 2014, 7 men and 1 woman with an average age of 36 years (range, 27 to 45) were operated on. The right hand was involved in 6 of the 8 cases. All patients had symptomatic osteoarthritis secondary to isolated articular malunion and subluxation of the 5th CMC joint...
July 14, 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28711660/a-novel-deletion-involving-gnas-exon-1-causes-php1a-and-further-refines-the-region-required-for-normal-methylation-at-exon-a-b
#13
Monica Reyes, Anara Karaca, Murat Bastepe, Nese Ersoz Gulcelik, Harald Jüppner
GNAS exons 1-13 encode the biallelically expressed alpha-subunit of the stimulatory G protein (Gαs). Additional transcripts derived from this locus use alternative first exons that undergo parent-specific methylation, thus allowing transcription only from the non-modified allele. Pseudohypoparathyroidism type Ia (PHP1A) is characterized by Albright's Hereditary Osteodystrophy (AHO) and resistance to multiple hormones; this disorder is caused by maternal inactivating mutations involving Gαs exons. In contrast, pseudohypoparathyroidism type Ib (PHP1B) is characterized mostly by resistance to PTH and often mild TSH resistance, usually without AHO features...
July 12, 2017: Bone
https://www.readbyqxmd.com/read/28709917/what-triggers-in-trigger-finger-the-flexor-tendons-at-the-flexor-digitorum-superficialis-bifurcation
#14
X L Chuang, C C Ooi, S T Chin, M A Png, S K Wong, S C Tay, D A McGrouther
To define the role of the flexor tendons in trigger finger, a high-resolution ultrasound examination was performed in 20 trigger fingers and 20 normal contralateral digits in three digital postures: full extension, mid-flexion and near-full flexion. Precise measurements of diameter and cross-sectional area of the combined tendon mass were recorded at five clearly defined locations: summit of the metacarpal head, proximal lip of the proximal phalanx (PP) and at 1/8, 1/4 and 1/2 length of the PP. In the normal tendons, there was an anatomical thickening, not previously appreciated at 1/4 length PP, in the region of the FDS bifurcation...
May 27, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28709793/dorsal-scaphoid-subluxation-on-sagittal-magnetic-resonance-imaging-as-a-marker-for-scapholunate-ligament-tear
#15
David W Meister, Krystle A Hearns, Michelle G Carlson
PURPOSE: To evaluate the diagnostic utility of scaphoid dorsal subluxation on magnetic resonance imaging (MRI) as a predictor of scapholunate interosseous ligament (SLIL) tears and compare this with radiographic findings. METHODS: Thirty-six MRIs were retrospectively reviewed: 18 with known operative findings of complete Geissler IV SLIL tears that were surgically repaired, and 18 MRIs performed for ulnar-sided wrist pain but no SLIL tear. Dorsal subluxation of the scaphoid was measured on the sagittal MRI cut, which demonstrated the maximum subluxation...
July 11, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28701068/primary-trapeziometacarpal-prosthesis-for-complicated-fracture-of-the-base-of-the-thumb-metacarpal
#16
S Barrera-Ochoa, G Mendez-Sanchez, X Mir-Bullo
No abstract text is available yet for this article.
July 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28698814/a-patient-matched-entire-first-metacarpal-prosthesis-in-treatment-of-giant-cell-tumor-of-bone
#17
Thipachart Punyaratabandhu, Boonrat Lohwongwatana, Chedtha Puncreobutr, Arkaphat Kosiyatrakul, Puwadon Veerapan, Suriya Luenam
Giant cell tumor of the bones occurring in the first metacarpals frequently requires entire metacarpal resection due to the aggressive nature and high rate of recurrence. Bone reconstruction can be performed with autogenous bone grafts. Here we describe a new technique of reconstruction using a patient-matched three-dimensional printed titanium first metacarpal prosthesis. This prosthesis has a special design for ligament reconstruction in the proximal and distal portions. Good hand function and aesthetic appearance were maintained at a 24-month follow-up visit...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28682860/a-biomechanical-analysis-of-plate-fixation-using-unicortical-and-bicortical-screws-in-transverse-metacarpal-fracture-models-subjected-to-4-point-bending-and-dynamical-bending-test
#18
Eirini Liodaki, Robert Wendlandt, Klaus Waizner, Brigitte E Schopp, Peter Mailänder, Felix Stang
In the published literature there are controversial data to the biomechanical stability of monocortical comparing to the bicortical fixation of metacarpal fractures. The aim of this study was to compare the biomechanical stability of monocortical and bicortical locking osteosynthesis in quasi-static and dynamic 4-point bending tests of composite third metacarpal bone (4th Gen third metacarpal, Sawbones, Malmö, Sweden) fixed with 7-hole locking plate (XXS System, Biotech-Ortho, Wright, Memphis, TN). The tests to determine quasi-static yield and bending strength as well as fatigue strength were conducted in 4 groups of 10 samples after creating standardized mid-shaft transverse osteotomies using a diamont belt grinder (0...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28681688/common-lesions-of-the-distal-end-of-the-third-metacarpal-metatarsal-bone-in-racehorse-catastrophic-breakdown-injuries
#19
Jennifer G Janes, Laura A Kennedy, Katherine S Garrett, Julie B Engiles
Equine catastrophic skeletal breakdown injury is a serious issue within the racing industry, given the impact on equine and human health. The metacarpo- and metatarso-phalangeal (fetlock) joints are common sites of catastrophic injury. However, lesions involving articular cartilage, subchondral bone, and synovium are commonly identified within the fetlock of the contralateral limb; hence, it is imperative that lesions in both limbs are evaluated and characterized during postmortem examination. Bone and articular cartilage changes typically occur in specific locations, related to cyclic fetlock load and overextension during high-speed exercise...
July 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28681462/sex-determination-according-to-the-lengths-of-hand-bones-in-rhesus-macaques-macaca-mulatta
#20
Huaxiang Tian, Xiaojin Zhao, Fengxia Hu, Haiyang Hu
Measurement of hand bone length has been used for sex determination in humans and non-human primates (El-Morsi et al., 2013; McFadden and Bracht, 2005). The aim of this study was to determine the sex of rhesus macaques (Macaca mulatta) on the basis of the lengths of corresponding rows of metacarpals and phalanges in a macaque population by means of developing discriminant functions. Measurements on direct dry bones only included lengths for 19 bones of the left hand in 39 macaques (consisting of 13 adult males and 26 adult females)...
July 6, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
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