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https://www.readbyqxmd.com/read/28441511/do-patients-with-borderline-dysplasia-have-inferior-outcomes-after-hip-arthroscopic-surgery-for-femoroacetabular-impingement-compared-with-patients-with-normal-acetabular-coverage
#1
Gregory L Cvetanovich, David M Levy, Alexander E Weber, Benjamin D Kuhns, Richard C Mather, Michael J Salata, Shane J Nho
BACKGROUND: The literature contains conflicting reports regarding whether outcomes of hip arthroscopic surgery for patients with borderline dysplasia are inferior to outcomes in patients with normal acetabular coverage. PURPOSE: To assess differences in the outcomes of hip arthroscopic surgery for femoroacetabular impingement (FAI) in groups of patients with borderline dysplasia and normal coverage. STUDY DESIGN: Cohort study; Level of evidence, 3...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28437549/poor-utility-of-gonadal-shielding-for-pediatric-pelvic-radiographs
#2
Mark C Lee, Jessica Lloyd, Matthew J Solomito
Plain pelvic radiographs are commonly used for a variety of pediatric orthopedic disorders. Lead shielding is typically placed over the gonads to minimize radiation exposure to these sensitive tissues. However, misplaced shielding can sabotage efforts to protect patients from excessive radiation exposure either by not covering radiosensitive tissues or by obscuring anatomic areas of interest, prompting repeat radiographic examinations. The goal of this study was to determine the incidence of misplaced shielding for pelvic radiographs obtained for pediatric orthopedic evaluation...
April 24, 2017: Orthopedics
https://www.readbyqxmd.com/read/28432692/functional-status-and-amount-of-hip-displacement-independently-affect-acetabular-dysplasia-in-cerebral-palsy
#3
Myung Ki Chung, Arif Zulkarnain, Jae Bong Lee, Byung Chae Cho, Chin Youb Chung, Kyoung Min Lee, Ki Hyuk Sung, Moon Seok Park
AIM: Acetabular dysplasia is the one of main causes of hip displacement in patients with cerebral palsy (CP). Although several studies have shown a relationship between hip displacement and acetabular dysplasia, relatively few have evaluated the association between quantitative acetabular dysplasia and related factors, such as Gross Motor Function Classification System (GMFCS) level. METHOD: We performed a morphometric analysis of the acetabulum in patients with CP using multiplanar reformation of computed tomography data...
April 22, 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/28432505/3d-double-echo-steady-state-sequence-assessment-of-hip-joint-cartilage-and-labrum-at-3-tesla-comparative-analysis-of-magnetic-resonance-imaging-and-intraoperative-data
#4
Christoph Schleich, Tobias Hesper, Harish S Hosalkar, Fanni Rettegi, Christoph Zilkens, Rüdiger Krauspe, Gerald Antoch, Bernd Bittersohl
OBJECTIVES: To assess the diagnostic accuracy of a high-resolution, three-dimensional (3D) double-echo steady-state (DESS) sequence with radial imaging at 3 Tesla (T) for evaluating cartilage and labral alterations in the hip. METHODS: Magnetic resonance imaging (MRI) data obtained at 3 T, including radially reformatted DESS images and intraoperative data of 45 patients (mean age 42 ± 13.7 years) who underwent hip arthroscopy, were compared. The acetabular cartilage and labrum of the upper hemisphere of the acetabulum and the central femoral head cartilage were evaluated...
April 21, 2017: European Radiology
https://www.readbyqxmd.com/read/28415025/unusual-combination-of-femoral-head-dislocation-associated-acetabular-fracture-with-multipart-femoral-fractures-case-report
#5
Erdal Uzun, Ali Eray Günay, İbrahim Karaman, Abdülhamit Mısır, Turan Bilge Kızkapan, Mustafa Özçamdallı
INTRODUCTION: Traumatic hip dislocation associated with femur intertrocanteric fracture is a rare and severe injury and it frequently occurs following a high energy trauma, Associated acetabular fractures with this injury are even more rare and potentially cause devastating consequences including avascular necrosis of the femoral head and subsequent early secondary osteoarthritis of the hip joint. PRESENTATION OF CASE: In this case report, we present a 20year old polytraumatized patient with traumatic hip dislocation associated with ipsilateral acetabulum fracture and simultaneous fractures of the ipsilateral femur...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28406567/evolution-of-spinopelvic-alignment-in-hominins
#6
Ella Been, Asier Gómez-Olivencia, Sara Shefi, Michalle Soudack, Markus Bastir, Alon Barash
Spinopelvic alignment refers to the interaction between pelvic orientation, spinal curvatures, and the line of gravity. In a healthy modern human, this alignment is characterized by reciprocal curves/orientation of the sacrum, lumbar lordosis, thoracic kyphosis, and cervical lordosis. In an economic sagittal posture, these curvatures keep the line of gravity close to the center of the acetabulum. The purpose of this study is to explore the spinopelvic alignment in extinct hominins. We examined spinopelvic alignment of a single representative from each of the following hominin groups: Australopithecus, Homo erectus (H...
May 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28406557/determinants-of-iliac-blade-orientation-in-anthropoid-primates
#7
Emily R Middleton, Zachariah J Winkler, Ashley S Hammond, J Michael Plavcan, Carol V Ward
Orientation of the iliac blades is a key feature that appears to distinguish extant apes from monkeys. Iliac morphology is hypothesized to reflect variation in thoracic shape that, in turn, reflects adaptations for shoulder and forearm function in anthropoids. Iliac orientation is traditionally measured relative to the acetabulum, whereas functional explanations pertain to its orientation relative to the cardinal anatomical planes. We investigated iliac orientation relative to a median plane using digital models of hipbones registered to landmark data from articulated pelves...
May 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28399325/influence-of-surgical-approach-on-pelvic-lift-in-hip-arthroplasty-during-cup-insertion
#8
Steffen Brodt, Christoph Windisch, Linda Krakow, Dimitri Nowack, Georg Matziolis
The position of the acetabular cup is a major factor in the long-term outcome of total hip arthroplasty (THA). Malpositioning of the acetabular cup frequently has been reported with the use of a minimally invasive implantation technique. It remains unclear whether the limited visibility or the increased retractor traction and thus tilting of the pelvis during cup implantation is the cause. This study investigated the influence of iatrogenically related pelvic lift using an anterolateral minimally invasive THA technique...
April 11, 2017: Orthopedics
https://www.readbyqxmd.com/read/28392637/long-term-results-of-impaction-bone-grafting-using-a-synthetic-graft-apapore-in-revision-hip-surgery
#9
V Kumar, M Ricks, S Aboul-Enin, D G Dunlop
INTRODUCTION: Impaction Bone grafting (IBG) in Revision THR is challenging and places demands on allograft stores. Identifying a potential synthetic replacement that works in the longer term was the aim of this study. METHODS: We retrospectively reviewed 21 sequential patients who had undergone revision THR using IBG. They were randomised to receive either combined allograft and synthetic graft or Allograft alone. Among the surviving 15 patients, there were total of 25 procedures were carried out...
June 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28391815/semi-automatic-segmentation-of-femur-based-on-harmonic-barrier
#10
Zheng Zou, Sheng-Hui Liao, San-Ding Luo, Qing Liu, Shi-Jian Liu
BACKGROUND AND OBJECTIVE: Segmentation of the femur from the hip joint in computed tomography (CT) is an important preliminary step in hip surgery planning and simulation. However, this is a time-consuming and challenging task due to the weak boundary, the varying topology of the hip joint, and the extremely narrow or blurred space between the femoral head and the acetabulum. To address these problems, this study proposed a semi-automatic segmentation framework based on harmonic fields for accurate segmentation...
May 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28389135/a-contemporary-definition-of-hip-dysplasia-and-structural-instability-toward-a-comprehensive-classification-for-acetabular-dysplasia
#11
Geoffrey P Wilkin, Mazen M Ibrahim, Kevin M Smit, Paul E Beaulé
Hip dysplasia has long been known to be a risk factor for pain and degenerative changes in the hip joint. The diagnosis of dysplasia has historically been based on assessments of acetabular anatomy on the anteroposterior pelvic radiograph, most commonly the lateral center-edge angle. Recent advances in imaging of the dysplastic hip with computerized tomography scans have demonstrated that hip dysplasia is in fact a 3-dimensional (D) deformity of the acetabulum and that multiple patterns of hip instability exist that may not be completely assessed on 2D imaging...
March 3, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28385941/patients-undergoing-surgical-hip-dislocation-for-the-treatment-of-acetabular-fractures-show-favourable-long-term-outcome
#12
P C Haefeli, G S Marecek, M J B Keel, K A Siebenrock, M Tannast
AIMS: The aims of this study were to determine the cumulative ten-year survivorship of hips treated for acetabular fractures using surgical hip dislocation and to identify factors predictive of an unfavourable outcome. PATIENTS AND METHODS: We followed up 60 consecutive patients (61 hips; mean age 36.3 years, standard deviation (sd) 15) who underwent open reduction and internal fixation for a displaced fracture of the acetabulum (24 posterior wall, 18 transverse and posterior wall, ten transverse, and nine others) with a mean follow-up of 12...
April 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28384153/cartilage-formation-in-the-pelvic-skeleton-during-the-embryonic-and-early-fetal-period
#13
Misaki Okumura, Aoi Ishikawa, Tomoki Aoyama, Shigehito Yamada, Chigako Uwabe, Hirohiko Imai, Tetsuya Matsuda, Akio Yoneyama, Tohoru Takeda, Tetsuya Takakuwa
The pelvic skeleton is formed via endochondral ossification. However, it is not known how the normal cartilage is formed before ossification occurs. Furthermore, the overall timeline of cartilage formation and the morphology of the cartilage in the pelvis are unclear. In this study, cartilage formation in the pelvic skeletons of 25 human fetuses (crown-rump length [CRL] = 11.9-75.0 mm) was observed using phase-contrast computed tomography and 7T magnetic resonance imaging. The chondrification center of the ilium, ischium, and pubis first appeared simultaneously at Carnegie stage (CS) 18, was located around the acetabulum, and grew radially in the later stage...
2017: PloS One
https://www.readbyqxmd.com/read/28382187/ultrasonographic-diagnosis-of-slipped-capital-femoral-epiphysis
#14
Manikandan Palaniappan, Venkatraman Indiran, Prabakaran Maduraimuthu
BACKGROUND: Slipped capital femoral epiphysis (SCFE), a fracture through the physis with resultant slip of the epiphysis, is the most common hip abnormality in adolescents and is a major cause of early osteoarthritis. Plain radiograph is the initial modality used to evaluate patients with painful hip joints. Ultrasonography and magnetic resonance imaging (MRI), which do not involve radiation exposure, have also been used. This case report supports the view that ultrasound can be used as an initial, cost-effective and radiation-free modality for the evaluation of suspected SCFE...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28377998/intra-abdominal-migration-of-a-k-wire-during-revision-total-hip-arthroplasty
#15
Kevin T Hug, Navin D Fernando
Revision total hip arthroplasty in the setting of severe acetabular bone loss is a challenging problem that is becoming more common. Kirschner wires are often used during acetabular revision for temporary fixation of trial components. We describe an intraoperative migration of a Kirschner wire through the acetabulum into the peritoneal cavity, requiring acute laparoscopic removal.
March 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/28375895/the-relationship-between-subluxation-percentage-of-the-femoroacetabular-joint-and-acetabular-width-in-asian-women-with-developmental-dysplasia-of-the-hip
#16
Yaichiro Okuzu, Koji Goto, Tomotoshi Kawata, Kazutaka So, Yutaka Kuroda, Shuichi Matsuda
BACKGROUND: Implantation of the acetabular cup insert in the "true" location of the acetabulum is a fundamental principle of total hip arthroplasty for the treatment of secondary osteoarthritis due to developmental dysplasia of the hip (DDH). As knowledge of the morphology of the acetabulum is required for accurate placement, we investigated the relationship between acetabular width and the Crowe classification of subluxation percentage of the hip. We also analyzed factors associated with the acetabular width ratio (AWR), defined as the acetabular width of the dysplastic hip divided by that of the unaffected, contralateral hip...
April 5, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28359575/inaccuracy-and-bias-in-adult-skeletal-age-estimation-assessing-the-reliability-of-eight-methods-on-individuals-of-varying-body-sizes
#17
Catherine E Merritt
Accurate age estimations are essential for identifying human skeletal remains and narrowing missing persons searches. This study examines how BMI, body mass, and stature influence inaccuracy and bias in adult skeletal age estimations obtained using eight methods. 746 skeletons from the Hamann-Todd and William Bass Collections were used. Underweight BMI, light body mass, and short-stature individuals have the most error associated with their age estimates and are consistently under-aged between 3 to 13years...
March 18, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28357568/high-resolution-metal-artifact-reduction-mr-imaging-of-the-lumbosacral-plexus-in-patients-with-metallic-implants
#18
Shivani Ahlawat, Steven E Stern, Allan J Belzberg, Jan Fritz
OBJECTIVE: To assess the quality and accuracy of metal artifact reduction sequence (MARS) magnetic resonance imaging (MRI) for the diagnosis of lumbosacral neuropathies in patients with metallic implants in the pelvis. MATERIALS AND METHODS: Twenty-two subjects with lumbosacral neuropathy following pelvic instrumentation underwent 1.5-T MARS MRI including optimized axial intermediate-weighted and STIR turbo spin echo sequences extending from L5 to the ischial tuberosity...
March 30, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28353567/are-normal-hips-being-labeled-as-femoroacetabular-impingement-due-to-ee-angle
#19
Tian You, Bei Yang, Xin-Tao Zhang, Xiao-Cheng Jiang, Shuang Wang, Wen-Tao Zhang
Gluteal muscle contracture (GMC) is a clinical syndrome characterized by gait abnormality and limb dysfunction, as well as secondary deformities of pelvis and femur. Femoroacetabular impingement (FAI) typically could be diagnosed on the basis of computed tomography (CT) such as the equatorial-edge angle (EE angle), but it did not work well in GMC patients. In this study, we retrospected all image data and found small EE angles in GMCs, which meant retroverted acetabulum; however, none of them showed no symptoms and signs of FAI...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28350858/in-vivo-measured-joint-friction-in-hip-implants-during-walking-after-a-short-rest
#20
Philipp Damm, Alwina Bender, Georg Duda, Georg Bergmann
INTRODUCTION: It has been suspected that friction in hip implants is higher when walking is initiated after a resting period than during continuous movement. It cannot be excluded that such increased initial moments endanger the cup fixation in the acetabulum, overstress the taper connections in the implant or increase wear. To assess these risks, the contact forces, friction moments and friction coefficients in the joint were measured in vivo in ten subjects. Instrumented hip joint implants with telemetric data transmission were used to access the contact loads between the cup and head during the first steps of walking after a short rest...
2017: PloS One
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