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Z Sadozai, R Davies, J Warner
Non-displaced hip fractures can be difficult to diagnose on plain film radiographs. When there is ongoing clinical suspicion of an occult fracture, further imaging is obtained. We investigated the sensitivity of computed tomography (CT) scans in detecting these fractures and the delays to surgery that three-dimensional imaging causes. We identified 78 CT scans performed for possible hip fractures over the past 3 years with the presence and absence of a fracture recorded. Based on subsequent imaging, the accuracy of CT scans was determined...
October 18, 2016: Injury
P Mörsdorf, A Lauer, T Histing, T Pohlemann, M Burkhardt
Traumatic hip dislocations in children are not frequent but constitute true emergencies. They require urgent reduction because of the risk of consecutive avascular necrosis of the femoral head. We report a 6-year-old boy with traumatic posterior hip dislocation on a vacation abroad. After closed reduction the day of the accident, a hip spica cast was applied and the patient was transferred home. Once home, X‑ray and CT diagnostics were completed by MRI. In future, long-term clinical and radiological investigations for avascular necrosis and growth disorders, as well as thoroughly informing the parents, should be mandatory...
October 21, 2016: Der Unfallchirurg
Mohammed A Zwawi, Faissal A Moslehy, Christopher Rose, Victor Huayamave, Alain J Kassab, Eduardo Divo, Brendan J Jones, Charles T Price
: This study utilized a computational biomechanical model and applied the least energy path principle to investigate two pathways for closed reduction of high grade infantile hip dislocation. The principle of least energy when applied to moving the femoral head from an initial to a final position considers all possible paths that connect them and identifies the path of least resistance. Clinical reports of severe hip dysplasia have concluded that reduction of the femoral head into the acetabulum may occur by a direct pathway over the posterior rim of the acetabulum when using the Pavlik harness, or by an indirect pathway with reduction through the acetabular notch when using the modified Hoffman-Daimler method...
October 20, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
Ming Han Lincoln Liow, Young-Min Kwon
The potential advantages of contemporary MoM THA implants include less volumetric wear with subsequent reduction of polyethylene wear-induced osteolysis and greater component stability with use of large-diameter femoral heads. However, there have been concerns regarding significantly elevated revision rates in MoM THA due to MoM-related complications such as adverse local tissue reaction (pseudotumour) formation. The increased failure rate in MoM hip arthroplasty is associated with the generation of biologically active, nanometer sized metal particles from the MoM bearing surfaces and taper junctions, which result in the development of a localized, adverse periprosthetic soft tissue response...
October 20, 2016: International Orthopaedics
Robert M Kwee, Shivani Ahlawat, Jan Fritz
OBJECTIVE: To determine the frequency of magnetic resonance imaging (MRI) findings of ischiofemoral impingement (IFI) in patients with inflammatory myositis (IM) and associated factors. METHODS: Pelvis and thigh MRI studies of 314 consecutive patients (57% women; mean age, 55.5 years; range, 18-85) with suspected muscle disease were reviewed. RESULTS: Ischiofemoral impingement at MRI was present in 11% of patients with a final diagnosis of IM and in 2% of patients with an alternative diagnosis (P = 0...
October 18, 2016: Journal of Computer Assisted Tomography
Amir Reza Radmard, Mohammad Sadegh Rahmanian, Alireza Abrishami, Ali Yoonessi, Soheil Kooraki, Mehrdad Dadgostar, Amir Pejman Hashemi Taheri, Marjan Gerami Seresht, Hossein Poustchi, Elham Jafari, Reza Malekzadeh, Shahin Merat
BACKGROUND: To investigate the association between non-alcoholic fatty liver disease (NAFLD) and quantitative measures of central adiposity in the general population using a semi-automated method on magnetic resonance imaging (MRI) data. METHODS: Subjects were recruited from Golestan Cohort Study. Two groups of 120 individuals with and without fatty liver were randomly selected based on findings of ultrasound. Non-invasive diagnosis of NAFLD was made by combination of ultrasound and MRI...
October 2016: Archives of Iranian Medicine
Julia R Dahlqvist, Christoffer R Vissing, Gitte Hedermann, Carsten Thomsen, John Vissing
PURPOSE: The aim of this study was to investigate the age-related changes in fatty replacement and cross sectional area (CSA) of cervical, thoracic and lumbar paraspinal muscles vs. leg muscles in healthy adults, and to test for association between muscle fat fraction and lifestyle factors. METHODS: Fifty-three healthy adults (24-76 years) were included. Dixon MRI technique was used to determine CSA and quantify fat fraction of paraspinal and leg muscles. Muscle CSA and fat fractions were tested for association with age and muscle strength...
October 13, 2016: Medicine and Science in Sports and Exercise
Hannes A Rüdiger, Krzystof Piasecki, Fabio Becce, Stéphane Cherix
BACKGROUND: Surgical access to benign neoplastic lesions of the femoral head are associated with significant morbidity, including contamination of intra-osseous access tracks, articular cartilage lesions, avascular bone necrosis or tumour recurrence due to incomplete curettage. CASE PRESENTATION: We present a case of a 20-year-old female with a giant cell tumour in the femoral head, which was treated with curettage through a trans-foveal approach and bone grafting...
September 22, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Adam C Johnson, John H Hollman, Benjamin M Howe, Jonathan T Finnoff
OBJECTIVE: The primary aim of this study was to determine if ischiofemoral space (IFS) dimensions vary with changes in hip flexion as a result of placing a bolster behind the knees during magnetic resonance imaging (MRI). A secondary aim was to determine if IFS dimensions vary between supine and prone hip neutral positions. DESIGN: The study employed a prospective design. SETTING: Sports medicine center within a tertiary care institution. PARTICIPANTS: Five male and five female adult subjects (age mean = 29...
October 14, 2016: Skeletal Radiology
Rahul Gujrathi, Kanchan Gupta, Chetan Ravi, Bhujang Pai
BACKGROUND: Sciatica has been classically described as pain in the back and hip with radiation in the leg along the distribution of the sciatic nerve, secondary to compression or irritation of the sciatic nerve. Spinal abnormality being the most common etiology, is one of the most common indications for MRI of the lumbosacral spine. Here we describe imaging findings secondary to a supralevator perianal abscess causing irritation of the sciatic nerve, which was diagnosed on MRI of the lumbosacral spine...
2016: Polish Journal of Radiology
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
Alexander E Weber, Benjamin D Kuhns, Gregory L Cvetanovich, Paul B Lewis, Richard C Mather, Michael J Salata, Shane J Nho
PURPOSE: The purpose of this study was to examine the hip capsule in a subset of symptomatic patients who underwent capsular closure during hip arthroscopy. METHODS: All patients undergoing primary hip arthroscopy for femoroacetabular impingement (FAI) with routine capsular closure between January 1, 2012, and December 31, 2015, were eligible. Only patients with unilateral surgery and a postoperative magnetic resonance imaging (MRI; ordered for persistent symptoms) were included...
October 5, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
Florian Schmaranzer, Pascal C Haefeli, Markus S Hanke, Emanuel F Liechti, Stefan F Werlen, Klaus A Siebenrock, Moritz Tannast
BACKGROUND: Delayed gadolinium-enhanced MRI of cartilage (dGEMRIC) allows an objective, noninvasive, and longitudinal quantification of biochemical cartilage properties. Although dGEMRIC has been used to monitor the course of cartilage degeneration after periacetabular osteotomy (PAO) for correction of hip dysplasia, such longitudinal data are currently lacking for femoroacetabular impingement (FAI). QUESTIONS/PURPOSES: (1) How does the mean acetabular and femoral dGEMRIC index change after surgery for FAI at 1-year followup compared with a similar group of patients with FAI treated without surgery? (2) Does the regional distribution of the acetabular and femoral dGEMRIC index change for the two groups over time? (3) Is there a correlation between the baseline dGEMRIC index and the change of patient-reported outcome measures (PROMs) at 1-year followup? (4) Among those treated surgically, can dGEMRIC indices distinguish between intact and degenerated cartilage? METHODS: We performed a prospective, comparative, nonrandomized, longitudinal study...
October 5, 2016: Clinical Orthopaedics and related Research
Seong Rok Han
There are very few reports of spinal epidural lipomatosis (SEL) in association with scoliosis. A 49-year-old man presented with persistent back pain and right hip lump. The lumbar spine X-rays showed scoliosis (Lenke classification 5BN). Lumbar MRI demonstrated circumferential epidural fat deposit from L1 to lower S2 level. There was no obvious etiology of SEL except mild increased body mass index (BMI). The patient was managed with conservative treatment. After 6 months medication (limaprost and ginkgo), his symptoms were relieved...
March 2016: J Spine Surg
Pranit N Chotai, Mark S Hsiao, Indu Pathak, Diem Banh, Marwa Abdou, Amr A Abdelgawad
Pelvic pyomyositis is an infection of the skeletal muscles around the hip joint. Fever, hip pain, limp, and leukocytosis are common; however, the clinical picture is often vague. MRI is the current gold-standard imaging for pyomyositis. No studies in the current literature have reported an unremarkable initial MRI in a patient with symptomatic pyomyositis. An adolescent female presented with symptomatic pelvic pyomyositis, but admission MRI was normal. A follow-up MRI indicated development of pelvic pyomyositis...
November 2016: Journal of Pediatric Orthopedics. Part B
Ching-Jen Wang, Chung-Cheng Huang, Hon-Kan Yip, Ya-Ju Yang
BACKGROUND: This study investigated the effects of different dosages of extracorporeal shockwave therapy (ESWT) in early osteonecrosis of the femoral head (ONFH). MATERIALS AND METHODS: Thirty-three patients (42 hips) were randomly divided into three groups. Group A (10 patients with 16 hips) received 2000 impulses of ESWT at 24 Kv to the affected hip. Group B (11 patients with 14 hips) and Group C (12 patients with 12 hips) received 4000 and 6000 impulses of ESWT respectively...
September 21, 2016: International Journal of Surgery
Zhen-Guo Huang, Xiao-Liang Chen, Kai-Ning Shi, Ran Yan, He Chen, Min-Xing Yang, Bao-Xiang Gao, Queenie Chan, Guo-Chun Wang
OBJECTIVES: To investigate the feasibility and accuracy of T2-weighted spectral presaturation inversion recovery combined with fluid attenuated inversion recovery (T2W SPIR-FLAIR) in the diagnosis of hip synovitis in patients with spondyloarthropathy (SpA). METHODS: Ten volunteers underwent a T2W SPIR and four T2W SPIR-FLAIR sequence scans with different inversion time (TI) to determine the optimum TI that could effectively suppress the intra-articular fluid signals...
September 23, 2016: British Journal of Radiology
Matthew N Bourne, Steven J Duhig, Ryan G Timmins, Morgan D Williams, David A Opar, Aiman Al Najjar, Graham K Kerr, Anthony J Shield
BACKGROUND: The architectural and morphological adaptations of the hamstrings in response to training with different exercises have not been explored. PURPOSE: To evaluate changes in biceps femoris long head (BFLH) fascicle length and hamstring muscle size following 10-weeks of Nordic hamstring exercise (NHE) or hip extension (HE) training. METHODS: 30 recreationally active male athletes (age, 22.0±3.6 years; height, 180.4±7 cm; weight, 80...
September 22, 2016: British Journal of Sports Medicine
Martin Grosshans, Christian Vollmert, Sabine Vollstaedt-Klein, Ingo Nolte, Emanuel Schwarz, Xenija Wagner, Markus Leweke, Jochen Mutschler, Falk Kiefer, Jan Malte Bumb
BACKGROUND: In obese individuals impaired sleep and neuroendocrine alterations such as melatonin deficits are associated with circadian rhythm disruption, altered circadian clock gene expression, and bright light at night. While the relation of pineal gland volume (PGV) and melatonin levels has recently been documented in humans, surprisingly little is known about the possible interference of the PGV and the pathophysiology of obesity in humans. SUBJECTS AND METHODS: We therefore compared the PGV of obese with non-obese individuals; both groups were matched by age and gender...
September 2016: Psychiatria Danubina
Guanwu Li, Zheng Xu, Jingzheng Fan, Wei Yuan, Lina Zhang, Lingmi Hou, Dongmei Wu, Shixin Chang, Horea Calimente, Jiani Hu
OBJECTIVE: To assess the differential features of marrow adiposity between osteoarthritis (OA) and osteoporosis (OP) in postmenopausal women using water/fat MRI. METHODS: This cross-sectional study included 97 postmenopausal women (OA [n = 25], OA + osteopenia [n = 27], OA + OP [n = 23], and OP groups [n = 22]). Water/fat MRI, dual-energy x-ray absorptiometry and biochemical analysis were performed to assess vertebral marrow fat fraction, bone mineral density, and bone biomarkers, respectively...
September 19, 2016: Menopause: the Journal of the North American Menopause Society
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