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https://www.readbyqxmd.com/read/28540145/a-rare-case-of-osteomyelitis-caused-by-haemophilus-parainfluenzae
#1
Fernando Cobo, Gemma Jiménez, Javier Rodríguez-Granger, Antonio Sampedro, Luis Aliaga-Martínez
Haemophilus parainfluenzae is a rare cause of bone and joint infections. We report a case of calcaneal osteomyelitis due to this microorganism with a review of all published. A 23-year-old woman presented with a 1-month history of pain and inflammation in the calcaneus area. Osteomyelitis was suspected at this location based on computed tomography images. Culture of six bone biopsies and surrounding tissue resulted in the isolation of H. parainfluenzae. Surgical drainage and debridement was performed, and antibiotic treatment was prescribed, resolving the infection...
2017: J Bone Jt Infect
https://www.readbyqxmd.com/read/28534210/association-study-of-estrogen-receptor-alpha-gene-polymorphisms-with-bone-mass-assessed-by-quantitative-ultrasound-in-young-adults
#2
María Correa-Rodriguez, Jacqueline Schmidt-RioValle, Blanca Rueda-Medina
Different genetic variants in estrogen receptor alpha (ESR1) have been shown to influence bone phenotypes including quantitative bone ultrasound in elderly. We aimed to investigate the role of ESR1 polymorphisms in bone mass assessed by calcaneal quantitative ultrasound (QUS) in a population of young adults. The study sample consisted of 466 healthy individuals of Caucasian ancestry (315 females and 152 males) aged 18 and 25 years (median age 20.39 ± 2.70). Six ESR1 polymorphisms (rs302033, rs2982552, rs2982575, rs2504063, rs2234693-PvuII and rs9340799-XbaI) were selected as genetic markers and genotyped...
May 22, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28533860/-surgical-treatment-of-calcaneal-fractures-about-29-cases
#3
Badr El Alami, Aimane Naam, Mohamed Admi, Ilyas Rabhi, Mohamed Elbardai, Fawzi Boutayeb
Calcaneal fractures are infrequent but, more often, serious. We report a series of 29 cases of calcaneal fractures surgically treated in the Orthopaedics and Traumatology in the University Hospital (CHU) Hassan II of Fez. This retrospective study aims to present the principles and to evaluate the results of surgical treatment for articular fractures of the calcaneus, in comparison with conservative treatment. Our study included 21 men and 8 women, the average age was 21-61 years. Etiology was dominated by road traffic accidents as wel as by falls from a high place...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28515152/effects-of-deficiency-of-kelch-like-ech-associated-protein-1-on-skeletal-organization-a-mechanism-for-diminished-nuclear-factor-of-activated-t-cells-cytoplasmic-1-during-osteoclastogenesis
#4
Eiko Sakai, Masanobu Morita, Masahiro Ohuchi, Mizuho A Kido, Yutaka Fukuma, Kazuhisa Nishishita, Kuniaki Okamoto, Ken Itoh, Masayuki Yamamoto, Takayuki Tsukuba
Kelch-like ECH-associated protein 1 (Keap1) binds to nuclear factor E2 p45-related factor 2 (Nrf2), a transcription factor for antioxidant enzymes, to suppress Nrf2 activation. The role of oxidative stress in many diseases supports the possibility that processes that are associated with Nrf2 activation might offer therapeutic potential. Nrf2 deficiency induces osteoclastogenesis, which is responsible for bone loss, by activating receptor activator of NF-κB ligand (RANKL)-mediated signaling; however, the effects of Keap1 deficiency remain unclear...
May 17, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28512689/long-term-results-of-fibular-achilles-tenodesis-westin-s-tenodesis-for-paralytic-pes-calcaneus-is-hypercorrection-avoidable-a-longitudinal-retrospective-study
#5
Helder Henzo Yamada, Patricia Maria Moraes de Barros Fucs
PURPOSE: The purpose of this study was to review all cases of patients submitted to Westin's tenodesis, who had calcaneus feet secondary to myelomeningocele sequel, in order to evaluate the anatomical change provided by surgery and also to verify, in a long-term follow-up, the inversion of the deformity depending on the patient's age. METHODS: In this longitudinal retrospective study, all medical records of patients with myelomeningocele sequelae submitted to Westin's tenodesis from 1993 to 2013 in a public university hospital were reviewed...
May 16, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28507975/charcot-fracture-in-the-calcaneus-after-total-knee-arthroplasty-a-case-report
#6
Hirokazu Takai, Katsuhiko Kiyota, Nobutake Nakane, Tomoki Takahashi
INTRODUCTION: Only a few reports have described calcaneus fractures after total knee arthroplasty (TKA). Therefore, in this report, we describe a case of calcaneal avulsion fracture that occurred 5 weeks after a TKA in a relatively young male patient with syphilis. CASE REPORT: A 63-year-old man with syphilis had Charcot joint of the right knee. The patient developed severe varus deformity and contracture and experienced severe pain in the knee. TKA was performed to alleviate the pain and improve the patient's gait...
November 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28506249/an-unusual-case-of-proximal-humeral-simple-bone-cyst-in-an-adult-from-secondary-cystic-change
#7
Mamer S Rosario, Norio Yamamoto, Katsuhiro Hayashi, Akihiko Takeuchi, Hiroaki Kimura, Shinji Miwa, Takashi Higuchi, Hiroyuki Inatani, Kensaku Abe, Yuta Taniguchi, Hisaki Aiba, Hiroyuki Tsuchiya
BACKGROUND: Simple bone cysts (SBC) have been documented to occur in adults with closed physeal plates, most commonly affecting the calcaneus in this patient subset. Although most authors theorize an association to trauma, etiology of simple bone cysts remains an enigma up to now. CASE PRESENTATION: A 26-year-old kickboxing coach sought consult for a painful right shoulder which on radiographs and magnetic resonance (MR) imaging showed a proximal humeral lesion with signs of ossification...
May 15, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28505593/foot-ankle-complex-injury-risk-curves-using-calcaneus-bone-mineral-density-data
#8
Narayan Yoganandan, Sajal Chirvi, Liming Voo, Nicholas DeVogel, Frank A Pintar, Anjishnu Banerjee
OBJECTIVE: Biomechanical data from post mortem human subject (PMHS) experiments are used to derive human injury probability curves and develop injury criteria. This process has been used in previous and current automotive crashworthiness studies, Federal safety standards, and dummy design and development. Human bone strength decreases as the individuals reach their elderly age. Injury risk curves using the primary predictor variable (e.g., force) should therefore account for such strength reduction when the test data are collected from PMHS specimens of different ages (age at the time of death)...
May 5, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28502602/uncontacted-tire-explosion-causing-trauma-to-bilateral-lower-extremities-a-case-report
#9
Ming-Yang Yu, Yun Su, Xiang-Jun Meng, Bo-Wu Luan, Gui-Shan Gu, Qiang Sun, De-Wei Zhao
It is uncommon for tire explosion related injuries on the lower extremity. The bilateral lower extremities were injured by tire explosion when the patient was seated in a bus. She sustained an open fracture with partial bone loss in the right calcaneus (a comminuted fracture in the right ankle joint) and a closed comminuted fracture in the left tibia and fibula. This damage was caused by uncontacted tire explosion, thanks to a thick floor between the exploded tire and the patient's feet. This type of injury on lower extremity caused by uncontacted tire explosion was uncommon...
March 16, 2017: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28501960/a-modified-minimally-invasive-technique-for-intra-articular-displaced-calcaneal-fractures-fixed-by-transverse-and-axial-screws
#10
K C Kapil Mani, Parimal Acharya, R C Dirgha Raj, Bandhu Ram Pangeni, Arun Sigdel, Suman Babu Marahatta
The management of displaced, intra-articular calcaneal fracture represents a surgical challenge to even an experienced orthopedic surgeon. Plate osteosynthesis using an extended lateral approach is complicated by soft tissue problems, while those treated by closed reduction and percutaneous pinning cannot address all the intra-articular fragments sufficiently. The objective of our study is to evaluate restoration of subtalar joint and long-term functional outcomes in intra-articular displaced calcaneal fractures treated with transverse subcondral screws through a small incision on lateral aspect of calcaneus and percutaneously placed axial screws through the calcaneal tuberosity...
May 13, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28483559/effect-of-taping-on-multi-segmental-foot-kinematic-patterns-during-walking-in-persons-with-chronic-ankle-instability
#11
Bart Dingenen, Kevin Deschamps, Frauke Delchambre, Evelien Van Peer, Filip F Staes, Giovanni A Matricali
OBJECTIVES: To evaluate multi-segmental foot kinematic patterns in chronic ankle instability (CAI) participants during walking, and to investigate the influence of high-Dye and low-Dye taping on these kinematic patterns. DESIGN: Cross-sectional study. METHODS: Kinematic data of 12 non-injured controls and 15 CAI participants were measured with a three-dimensional motion analysis system during barefoot walking. In addition, the CAI participants walked with high-Dye and low-Dye taping...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28476383/evaluation-of-a-new-knotless-suture-anchor-repair-in-acute-achilles-tendon-ruptures-a-biomechanical-comparison-of-three-techniques
#12
James M Cottom, Joseph S Baker, Phillip E Richardson, Jared M Maker
Acute ruptures of the Achilles tendon are a common injury, and debate has continued in published studies on how best to treat these injuries. Specifically, controversy exists regarding the surgical approaches for Achilles tendon repair when one considers percutaneous versus open repair. The present study investigated the biomechanical strength of 3 different techniques for Achilles tendon repair in a cadaveric model. A total of 36 specimens were divided into 3 groups, each of which received a different construct...
May 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28468849/musculotendon-adaptations-and-preservation-of-spinal-reflex-pathways-following-agonist-to-antagonist-tendon-transfer
#13
Mark A Lyle, T Richard Nichols, Elma Kajtaz, Huub Maas
Tendon transfer surgeries are performed to restore lost motor function, but outcomes are variable, particularly those involving agonist-to-antagonist muscles. Here, we evaluated the possibility that lack of proprioceptive feedback reorganization and musculotendon adaptations could influence outcomes. Plantaris-to-tibialis anterior tendon transfer along with resection of the distal third of the tibialis anterior muscle belly was performed in eight cats. Four cats had concurrent transection of the deep peroneal nerve...
May 2017: Physiological Reports
https://www.readbyqxmd.com/read/28464269/the-postcranial-skeletal-maturation-of-australopithecus-sediba
#14
Noel Cameron, Barry Bogin, Debra Bolter, Lee R Berger
OBJECTIVES: In 2008, an immature hominin defined as the holotype of the new species Australopithecus sediba was discovered at the 1.9 million year old Malapa site in South Africa. The specimen (MH1) includes substantial post-cranial skeletal material, and provides a unique opportunity to assess its skeletal maturation. METHODS: Skeletal maturity indicators observed on the proximal and distal humerus, proximal ulna, distal radius, third metacarpal, ilium and ischium, proximal femur and calcaneus were used to assess the maturity of each bone in comparison to references for modern humans and for wild chimpanzees (Pan troglodytes)...
May 2, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28460573/biomechanical-analysis-of-suture-anchor-vs-tenodesis-screw-for-fhl-transfer
#15
Mark C Drakos, Michael Gott, Sydney C Karnovsky, Conor I Murphy, Bridget A DeSandis, Noah Chinitz, Daniel Grande, Nadeen Chahine
BACKGROUND: Chronic Achilles injury is often treated with flexor hallucis longus (FHL) tendon transfer to the calcaneus using 1 or 2 incisions. A single incision avoids the risks of extended dissections yet yields smaller grafts, which may limit fixation options. We investigated the required length of FHL autograft and biomechanical profiles for suture anchor and biotenodesis screw fixation. METHODS: Single-incision FHL transfer with suture anchor or biotenodesis screw fixation to the calcaneus was performed on 20 fresh cadaveric specimens...
April 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28458187/torsional-stiffness-after-subtalar-arthrodesis-using-second-generation-headless-compression-screws-biomechanical-comparison-of-2-screw-and-3-screw-fixation
#16
Markus Riedl, Richard R Glisson, Takumi Matsumoto, Stefan G Hofstaetter, Mark E Easley
BACKGROUND: Subtalar joint arthrodesis is a common operative treatment for symptomatic subtalar arthrosis. Because excessive relative motion between the talus and calcaneus can delay or prohibit fusion, fixation should be optimized, particularly in patients at risk for subtalar arthrodesis nonunion. Tapered, fully-threaded, variable pitch screws are gaining popularity for this application, but the mechanical properties of joints fixed with these screws have not been characterized completely...
June 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28455473/radiological-and-clinical-comparison-of-kinematically-versus-mechanically-aligned-total-knee-arthroplasty
#17
T Matsumoto, K Takayama, K Ishida, S Hayashi, S Hashimoto, R Kuroda
AIMS: The aim of this study was to compare the post-operative radiographic and clinical outcomes between kinematically and mechanically aligned total knee arthroplasties (TKAs). PATIENTS AND METHODS: A total of 60 TKAs (30 kinematically and 30 mechanically aligned) were performed in 60 patients with varus osteoarthritis of the knee using a navigation system. The angles of orientation of the joint line in relation to the floor, the conventional and true mechanical axis (tMA) (the line from the centre of the hip to the lowest point of the calcaneus) were compared, one year post-operatively, on single-leg and double-leg standing long leg radiographs between the groups...
May 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28431451/-experience-with-the-hind-foot-relaxation-boot
#18
Hans Zwipp, Michael Borrmann, Eberhard Walter
The goal of this paper is to report our experience with hindfoot fractures using our specially developed boot, with a follow-up of 557 cases. This boot works like the well-known Allgöwer-Röck ortheses (ARO), but is a hybrid between a boot and an orthesis. It allows full weightbearing without using crutches and completely protects an acutely operated hind foot fracture, hind foot arthrodesis or a hind foot fracture which is suitable for conservative treatment. In its first generation, this boot was custom made and used in 408 cases, from March 1999 to February 2011...
April 21, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28429173/a-new-approach-to-local-dco-in-ankle-fracture-dislocations-external-fixation-with-diaphyseal-unicortical-screws-applied-by-local-anaesthesia
#19
F Lavini, T Maluta, G Carpeggiani, C Dall'Oca, E Samaila, G Marconato, B Magnan
PURPOSE: Ankle fracture dislocations represent a great threat for soft tissue viability and articular instability. The use of a temporary ankle bridging ExFix plays a fundamental role in the local damage control orthopaedics while waiting for definitive synthesis. METHODS: For this prospective research, we have developed a full application protocol of innovative diaphyseal monocortical screws fixator (Unyco-Orthofix(TM)) exclusively under local anaesthesia. Rigid selection criteria allowed us to collect nine patients during a period of almost 2 years...
April 20, 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/28401312/core-curriculum-illustration-anterior-process-fracture-of-the-calcaneus
#20
Shaimaa Abdelhassib Fadl, Muhammad Mubashir Ramzan, Claire Kalsch Sandstrom
This is the 28th installment of a series that will highlight one case per publication issue from the bank of cases available online as part of the American Society of Emergency Radiology (ASER) educational resources. Our goal is to generate more interest in and use of our online materials. To view more cases online, please visit the ASER Core Curriculum and Recommendations for Study online at http://www.aseronline.org/curriculum/toc.htm .
April 11, 2017: Emergency Radiology
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