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Hip, knee, shoulder

A Neubert, Z Yang, C Engstrom, Y Xia, M W Strudwick, S S Chandra, J Fripp, S Crozier
PURPOSE: Magnetic resonance (MR) imaging plays a key role in investigating early degenerative disorders and traumatic injuries of the glenohumeral cartilages. Subtle morphometric and biochemical changes of potential relevance to clinical diagnosis, treatment planning, and evaluation can be assessed from measurements derived from in vivo MR segmentation of the cartilages. However, segmentation of the glenohumeral cartilages, using approaches spanning manual to automated methods, is technically challenging, due to their thin, curved structure and overlapping intensities of surrounding tissues...
October 2016: Medical Physics
Amelia Guadalupe-Grau, Jose Antonio Carnicero, Jose Losa-Reyna, Jesús Tresguerres, Maria Del Carmen Gómez-Cabrera, Carmen Castillo, Ana Alfaro-Acha, Cristina Rosado-Artalejo, Leocadio Rodriguez-Mañas, Francisco José García-García
INTRODUCTION: Aging is a process that involves a reduction in muscle strength and anabolic hormone concentrations, which impacts significantly on health. AIM: To study the hormone/total strength (H/TS) ratio as a proxy of anabolic insensitivity status in elders, and its relationship with disability, hospitalization, and mortality risk. DESIGN: A total of 1462 persons aged ≥65 years from the Toledo Study of Healthy Aging participated in this study...
October 21, 2016: Journal of the American Medical Directors Association
Laura Prieto-Borja, Graciela Rodriguez-Sevilla, Alvaro Auñon, Concepción Pérez-Jorge, Enrique Sandoval, Joaquín Garcia-Cañete, Ignacio Gadea, Ricardo Fernandez-Roblas, Antonio Blanco, Jaime Esteban
BACKGROUND: The development of sonication protocols over the last few years has improved the sensitivity of conventional cultures for the diagnosis of prosthetic-joint infection (PJI). However, the development of a new, specifically designed kit for the molecular diagnosis of PJI could provide a major improvement in this field. METHODS: Prostheses retrieved from patients who underwent implant removal from May 2014 to May 2015 were sent for culture, and processed according to a previously defined protocol that included sonication...
October 18, 2016: Enfermedades Infecciosas y Microbiología Clínica
Kristi Reynolds, Daichi Shimbo, C Barrett Bowling, Luqin Deng, Adam Bress, John Sim, Paul Muntner
OBJECTIVE: To identify risk factors for serious fall injuries following initiation of antihypertensive medication among older adults. DESIGN AND METHOD: We conducted a retrospective cohort study using a 5% random sample of people with Medicare health insurance, a government program for older US adults. The analysis was restricted to patients with a diagnosis of hypertension who initiated antihypertensive medication between 2007 and 2011. Initiation was defined by the first antihypertensive medication fill in this time period preceded by 365 days with no antihypertensive medication fills...
September 2016: Journal of Hypertension
Daniel Pérez-Prieto, María E Portillo, Lluís Puig-Verdié, Albert Alier, Carlo Gamba, Pau Guirro, Santos Martínez-Díaz, Juan P Horcajada, Andrej Trampuz, Joan C Monllau
BACKGROUND: Culture negative prosthetic joint infections (PJI) still remain an issue even with the advantages of the new diagnostic tools for PJI. This is why some orthopedic surgeons have reservations relative to the use of preoperative antibiotic prophylaxis when a PJI is suspected. The purpose of the present study was to evaluate the influence of preoperative antibiotic prophylaxis on intraoperative cultures. MATERIAL AND METHODS: An enhanced diagnostic protocol for PJI (Zimmerli criteria) was used for the inclusion criteria in order to collect all PJI that were seen in a university hospital...
September 23, 2016: Diagnostic Microbiology and Infectious Disease
Ran Schwarzkopf, Erik Schnaser, Taiki Nozaki, Yasuhito Kaneko, Michael J Gillman
INTRODUCTION: Patient-specific implants and instruments (PSI) have been used in both knee and shoulder replacements due to the perceived benefits of improved surgical accuracy and efficiency. The proposed benefits of using a PSI in total hip arthroplasty (THA) are numerous and include reduction of operative time and improved mechanical and anatomical alignment leading to increased implant longevity, increased stability, and clinical outcomes. We describe a novel patient-specific instrumentation and a surgical method that may improve directed resection of acetabular bone and accurate cup placement during THA...
October 6, 2016: Surgical Technology International
Jernej Čamernik, Zrinka Potocanac, Luka Peternel, Jan Babič
When balance is exposed to perturbations, hand contacts are often used to assist postural control. We investigated the immediate and the transitionary effects of supportive hand contacts during continuous anteroposterior perturbations of stance by automated waist-pulls. Ten young adults were perturbed for 5 min and required to maintain balance by holding to a stationary, shoulder-high handle and following its removal. Center of pressure (COP) displacement, hip, knee and ankle angles, leg and trunk muscle activity and handle contact forces were acquired...
2016: Frontiers in Human Neuroscience
Elizabeth Salt, Amanda T Wiggins, Mary Kay Rayens, Brent J Morris, David Mannino, Andrew Hoellein, Ryan P Donegan, Leslie J Crofford
OBJECTIVE: Inconclusive findings about infection risks, importantly the use of immunosuppressive medications in patients who have undergone large-joint total joint arthroplasty, challenge efforts to provide evidence-based perioperative total joint arthroplasty recommendations to improve surgical outcomes. Thus, the aim of this study was to describe risk factors for developing a post-operative infection in patients undergoing TJA of a large joint (total hip arthroplasty, total knee arthroplasty, or total shoulder arthroplasty) by identifying clinical and demographic factors, including the use of high-risk medications (i...
August 24, 2016: Seminars in Arthritis and Rheumatism
P Yan, F Y Li, Y Yang, Y N Wang, A M Huang, H Yao
Objective: To investigate the prevalence of work-related musculoskeletal disorders (WMSDs) in nurses in Xinjiang, China, to analyze the influencing factors for the development of WMSDs, and to provide a reference for the prevention and treatment of WMSDs in nurses. Methods: Stratified cluster sampling was used to randomly select 8 422 nurses in 8 tertiary hospitals and 4 secondary hospitals in Xinjiang from January to October, 2015. A questionnaire survey was performed to investigate the prevalence of WMSDs in nurses from departments of internal medicine, surgery, gynecology, pediatrics, emergency, and intensive care and operating rooms and analyze related influencing factors...
August 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
Sophie Legrève
OBJECTIVE: Multifocal osteonecrosis is rare. A zone of epiphyseal bone-marrow necrosis of three or more joints characterizes it. The most common risk factors are glucocorticoids intake and alcoholism. However, there is a series of other causes that could be incriminated in osteonecrosis, among which antiphospholipid syndrome. This case report, illustrates a primary antiphospholipid syndrome with only one clinical manifestation: multifocal osteonecrosis. OBSERVATIONS: A 30-year-old woman, with a medical history of left total hip replacement (THR), presents with severe right coxalgia and pain in both knees and shoulders...
September 2016: Annals of Physical and Rehabilitation Medicine
Christine C Johnson, Daniel J Johnson, Joseph N Liu, Joshua S Dines, David M Dines, Lawrence V Gulotta, Grant H Garcia
Many patients prioritize the ability to return to sports following shoulder replacement surgeries, including total shoulder arthroplasty (TSA), reverse total shoulder arthroplasty (RTSA), and hemiarthroplasty (HA). While activity levels after hip and knee replacements have been well-established in the literature, studies on this topic in the field of shoulder arthroplasty are relatively limited. A review of the literature regarding athletic activity after shoulder arthroplasty was performed using the PubMed database...
September 18, 2016: World Journal of Orthopedics
Kristi Reynolds, Daichi Shimbo, C Barrett Bowling, Luqin Deng, Adam Bress, John Sim, Paul Muntner
OBJECTIVE: To identify risk factors for serious fall injuries following initiation of antihypertensive medication among older adults. DESIGN AND METHOD: We conducted a retrospective cohort study using a 5% random sample of people with Medicare health insurance, a government program for older US adults. The analysis was restricted to patients with a diagnosis of hypertension who initiated antihypertensive medication between 2007 and 2011. Initiation was defined by the first antihypertensive medication fill in this time period preceded by 365 days with no antihypertensive medication fills...
September 2016: Journal of Hypertension
James S Thomas, Christopher R France, Megan E Applegate, Samuel T Leitkam, Peter E Pidcoe, Stevan Walkowski
BACKGROUND: Virtual reality (VR) interventions hold great potential for rehabilitation as commercial systems are becoming more affordable and can be easily applied to both clinical and home settings. OBJECTIVE: In this study, we sought to determine how differences in the VR display type can influence motor behavior, cognitive load, and participant engagement. METHODS: Movement patterns of 17 healthy young adults (8 female, 9 male) were examined during games of Virtual Dodgeball presented on a three-dimensional television (3DTV) and a head-mounted display (HMD)...
2016: JMIR Serious Games
Takashi Nagai, John P Abt, Timothy C Sell, Karen A Keenan, Mark A McGrail, Brian W Smalley, Scott M Lephart
Despite many nonbattle injuries reported during deployment, few studies have been conducted to evaluate the effects of deployment on musculoskeletal and physiological characteristics and balance. A total of 35 active duty U.S. Army Soldiers participated in laboratory testing before and after deployment to Afghanistan. The following measures were obtained for each Soldier: shoulder, trunk, hip, knee, and ankle strength and range of motion (ROM), balance, body composition, aerobic capacity, and anaerobic power/capacity...
September 2016: Military Medicine
Huan Deng, Jian Chen, Frank Li, Cecilia W P Li-Tsang, Qiushi Liu, Xiaohong Ma, Ming Ao, Nan Chen, Yaqin Zhou, Xiaoyun Zhong, Zhiyu Chen, Lei Cao, Guiyang He, Jun Wu
PURPOSE: To assess the effects of mobility training on severe burn patients in the Burn Intensive Care Unit (BICU). METHODS: This was a retrospective cohort study. Severe burn patients with equal to or more than 50% Total Body Surface Area (TBSA) burns who received early rehabilitation in the BICU were included in this study. Based on the different early rehabilitation strategies during the two periods, patients admitted to the BICU from January 2011 to April 2013 were identified as the passive training cohort (n=49) while patients admitted to the BICU from May 2013 to December 2013 were identified as the mobility training cohort (n=24)...
November 2016: Burns: Journal of the International Society for Burn Injuries
John Prodromo, Justin Rackley, Mary K Mulcahey
Obesity represents a unique challenge in orthopaedic surgery, the impact of which is seen through all phases of injury: in the development of disease, during the operative procedure, and throughout the rehabilitation period. Given the high prevalence of obesity in the United States and around the world, this patient population represents a substantial proportion of patients in need of orthopedic care. The effects of this disease constrain both medical and financial resources. For obese patients undergoing orthopedic procedures, adequate steps must be taken to minimize the risks that occur before, during, and after surgical intervention...
September 2016: Physician and Sportsmedicine
Vânia Guedes, João Paulo Castro, Iva Brito
Osteoarthritis is the most common joint disorder worldwide. The predominant symptom, pain, is usually treated with acetaminophen or oral non-steroidal anti-inflammatory drugs, although they are associated with a significant risk of side effects. Topical capsaicin may represent an effective and safe alternative. The aim of this review is to examine the evidence for the efficacy and safety profile of topical capsaicin in the management of pain caused by osteoarthritis. Databases were searched for articles published between 2004 and 2016, in Portuguese, English or Spanish, using the search terms "capsaicin" and "osteoarthritis"...
August 26, 2016: Reumatología Clinica
Alvin W Su, Shuai-Chun Lin, A Noelle Larson
Perioperative vision loss is a rare complication of orthopaedic surgery and has been documented after spine, knee, hip, and shoulder procedures. It is associated with several ophthalmologic diagnoses, most commonly ischemic optic neuropathy. Although the pathophysiology remains unclear, current evidence suggests that systemic hemodynamic compromise and altered balance of intraocular perfusion contribute to the development of ischemic optic neuropathy. Although vision recovery has been reported, the prognosis of perioperative vision loss is poor, and no proven effective treatment is available...
October 2016: Journal of the American Academy of Orthopaedic Surgeons
Helen O'Leary, Keith M Smart, Niamh A Moloney, Catherine M Doody
BACKGROUND: Research suggests that peripheral and central nervous system sensitization can contribute to the overall pain experience in peripheral musculoskeletal (MSK) conditions. It is unclear, however, whether sensitization of the nervous system results in poorer outcomes following the treatment. This systematic review investigated whether nervous system sensitization in peripheral MSK conditions predicts poorer clinical outcomes in response to a surgical or conservative intervention...
August 19, 2016: Pain Practice: the Official Journal of World Institute of Pain
William R Aibinder, Bradley S Schoch, Robert H Cofield, Joaquin Sánchez-Sotelo, John W Sperling
BACKGROUND: The safety of arthroplasty in patients with a previous periprosthetic joint infection (PJI) remains unclear. The objective of this study was to determine whether patients with a history of a properly treated PJI complicating lower extremity arthroplasty can safely undergo shoulder arthroplasty without an increased risk of shoulder infection or compromise in their clinical outcomes. METHODS: Between 2002 and 2013, 36 patients with successful treatment of an infected lower extremity arthroplasty underwent a subsequent primary shoulder arthroplasty...
August 8, 2016: Journal of Shoulder and Elbow Surgery
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