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https://www.readbyqxmd.com/read/29323746/the-acetabular-and-spino-pelvic-morphologies-are-different-in-subjects-with-symptomatic-cam-femoro-acetabular-impingement
#1
George Grammatopoulos, Andrew D Speirs, K C Geoffrey Ng, Charles Riviere, Kawan S Rakhra, Mario Lamontagne, Paul E Beaule
Acetabular and spino-pelvic (SP) morphological parameters are important determinants of hip joint dynamics. This prospective study aimed to determine whether acetabular and SP morphological differences exist between hips with and without cam morphology and between symptomatic and asymptomatic hips with cam morphology. A cohort of 67 patients/hips was studied. Hips were either asymptomatic with no cam (Controls, n = 18), symptomatic with cam (n = 26) or asymptomatic with cam (n = 23). CT-based quantitative assessments of femoral, acetabular, pelvic and spino-pelvic parameters were performed...
January 11, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29322521/fitting-unanchored-puzzle-pieces-in-the-skeleton-appropriate-3d-scapular-positions-for-the-quadrupedal-support-in-tetrapods
#2
Shin-Ichi Fujiwara
Deducing the scapular positions of extinct tetrapod skeletons remains difficult, because the scapulae and rib cage are connected with each other not directly by skeletal joint, but by thoracic muscles. In extant non-testudine quadrupedal tetrapods, the top positions of the scapulae/suprascapulae occur at the anterior portion of the rib cage, above the vertebral column and near the median plane. The adequacy of this position was tested using three-dimensional mechanical models of Felis, Rattus and Chamaeleo that assumed stances on a forelimb on a single side and the hindlimbs...
January 11, 2018: Journal of Anatomy
https://www.readbyqxmd.com/read/29315199/a-waist-hip-ratio-surrogate-more-predictive-than-bmi-of-wound-complications-following-pelvic-and-acetabulum-surgery
#3
Todd Jaeblon, Kevin J Perry, Joseph A Kufera
OBJECTIVES: To determine if a novel surrogate of waist hip ratio (WHR) is more predictive of wound complications following pelvis or acetabulum stabilization than BMI, and describe the method of measuring a WHR proxy (WHRp). DESIGN: Retrospective review. SETTING: One Level-1 Trauma Center PATIENTS:: 161 patients following operative repair of pelvis and acetabulum fractures. INTERVENTION: Operative stabilization of a pelvic ring injury or acetabular fracture MAIN OUTCOME MEASUREMENTS:: Infection (pin, superficial, deep), Wound healing complication METHODS:: We retrospectively reviewed 161 subjects following operative repair of pelvic and acetabular fractures...
January 8, 2018: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/29309718/a-modified-extensile-anterior-approach-to-the-acetabulum-for-severe-acetabular-defects
#4
Joseph T Moskal, Ronald Driesen, Baris B Koc, Jonathan Yerasimides, Kristoff Corten
A modified extensile Smith-Petersen approach was used to access the acetabulum and pelvis in cases with complex acetabular defects requiring extensive reconstructions. Between 2010 and 2014, a total of 49 hips (48 patients) with a variety of acetabular defects were reconstructed using highly porous hemispherical acetabular cups and different reconstruction methods. Preoperative diagnoses included isolated aseptic loosening of the acetabular component, aseptic loosening of both acetabular and femoral components, infection, and other...
January 8, 2018: Orthopedics
https://www.readbyqxmd.com/read/29309383/analysis-of-acetabular-ossification-from-the-triradiate-cartilage-and-secondary-centers
#5
Kevin C Parvaresh, Andrew T Pennock, James D Bomar, Dennis R Wenger, Vidyadhar V Upasani
BACKGROUND: Acetabular development is a complex process that involves both endochondral growth from the triradiate cartilage (TRC) and intramembranous growth from the primary and secondary ossification centers of the innominate bones. Ponseti and others have described these centers including their contribution toward the development of normal acetabular shape. Prior studies have not utilized advanced imaging to study the appearance and closure of these secondary centers. The purpose of this study was to determine the chronological age at which the secondary ossification centers of the acetabulum appear and close and where there are any sex differences...
January 5, 2018: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29305458/hemiarthroplasty-proximal-femoral-endoprostheses-following-tumour-reconstruction-is-acetabular-replacement-necessary
#6
J D Stevenson, V S Kumar, G L Cribb, P Cool
AIMS: Dislocation rates are reportedly lower in patients requiring proximal femoral hemiarthroplasty than for patients undergoing hip arthroplasty for neoplasia. Without acetabular replacement, pain due to acetabular wear necessitating revision surgery has been described. We aimed to determine whether wear of the native acetabulum following hemiarthroplasty necessitates revision surgery with secondary replacement of the acetabulum after proximal femoral replacement (PFR) for tumour reconstruction...
January 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29298262/body-mass-index-affects-proximal-femoral-but-not-acetabular-morphology-in-adolescents-without-hip-pathology
#7
Eduardo N Novais, Sandra J Shefelbine, Karl-Philipp Kienle, Patricia E Miller, Garrett Bowen, Young-Jo Kim, Sarah D Bixby
BACKGROUND: Increased mechanical load secondary to a large body mass index (BMI) may influence bone remodeling. The purpose of this study was to investigate whether BMI is associated with the morphology of the proximal part of the femur and the acetabulum in a cohort of adolescents without a history of hip disorders. METHODS: We evaluated pelvic computed tomographic (CT) images in 128 adolescents with abdominal pain without a history of hip pathology. There were 44 male patients (34%) and the mean patient age (and standard deviation) was 15 ± 1...
January 3, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29287953/is-the-transverse-acetabular-ligament-hypertrophied-and-hindering-reduction-in-developmental-dysplasia-of-hip
#8
Soon Hyuck Lee, Woo Young Jang, Gi Won Choi, Young Keun Lee, Hae Woon Jung
PURPOSE: To investigate the arthroscopic pathoanatomy of the transverse acetabular ligament (TAL) and determine whether a TAL incision is necessary for the concentric reduction of developmental dysplasia of the hip (DDH) in infants and young children. METHODS: We retrospectively reviewed patients who underwent arthroscopic-assisted reduction for DDH between July 2008 and April 2016. The indications for this intervention included patients in whom closed reduction failed and those who did not require bone operations...
December 26, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29279780/locked-central-fracture-dislocation-of-the-hip-in-a-child-after-low-energy-trauma
#9
Alexandre H Nehme, Jack C Daoud, Hicham G Abdelnour, Jad N Bou Mounsef, Ramzi C Moucharafieh, Joseph W Wehbe
We present the case of a 13-year-old boy who sustained a locked central fracture dislocation of the right acetabulum following a bicycle fall. Immediate external reduction maneuvers under general anesthesia were unsuccessful due to intrapelvic entrapment of the femoral head. Open reduction internal fixation was achieved 48 hours later. After an initial satisfactory postoperative course, the patient ended up developing severe hip osteoarthritis 16 months after the procedure. The rarity of this injury in children is discussed, with its possible implications on joint congruity and potential growth injury...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/29258687/analysis-of-mortality-and-fixation-failure-in-geriatric-fractures-using-quantitative-computed-tomography
#10
Tyler S Pidgeon, Joey P Johnson, Matthew E Deren, Andrew R Evans, Roman A Hayda
OBJECTIVES: While osteoporosis has been shown to be a contributing factor in low energy fractures in the elderly, limited data exists regarding the correlation of bone mineral density (BMD) and T-Scores to mortality and failure of fracture fixation. This study seeks to determine the relationship between femoral neck BMD in elderly patients with typical geriatric fractures and mortality and fracture fixation failure using Quantitative Computed Tomography (QCT). MATERIALS AND METHODS: Patients over the age of 65 who sustained fractures of the proximal humerus, distal radius, pelvic ring, acetabulum, hip, proximal tibia, and ankle who also underwent a CT scan that included an uninjured femoral neck were retrospectively reviewed...
December 15, 2017: Injury
https://www.readbyqxmd.com/read/29250504/acetabular-insufficiency-fracture-following-prolonged-alendronate-use-and-the-failure-of-total-hip-arthroplasty-in-frozen-bone-two-cases-report
#11
Sang-Joon Kwak, Yoon-Je Cho, Gwang-Young Jung, Joo-Hyun Lee, Young-Soo Chun, Kee-Hyung Rhyu
Atypical insufficiency fracture of the femur following prolonged bisphosphonate use is well described. Regardless of the cause, insufficiency fracture of the acetabulum is extremely rare, and no reports have described insufficiency fractures of the acetabulum that are associated with prolonged bisphosphonate use. This report demonstrates the possibility of insufficiency fracture at the acetabulum following long-term alendronate use and the necessity of particular care in managing insufficiency fractures in "frozen" bone...
December 2017: Hip & Pelvis
https://www.readbyqxmd.com/read/29245096/pre-and-post-operative-evaluation-of-pincer-type-femoroacetabular-impingement-during-squat-using-image-matching-techniques-a-case-report
#12
Kensei Yoshimoto, Satoshi Hamai, Hidehiko Higaki, Hirotaka Gondo, Satoru Ikebe, Yasuharu Nakashima
INTRODUCTION: Although combined evaluation of hip joint kinematics and bone morphology is necessary for accurate assessment of femoroacetabular impingement (FAI), there are no report which evaluated hip kinematics of pincer-type FAI. PRESENTATION OF CASE: The pre- and postoperative hip kinematics of a 46-year-old man, with a pincer-type FAI during squat were evaluated using image-matching techniques and the rim-neck distance was measured. Preoperative simulation of squatting was also performed using patient's bone models and healthy subject's kinematics data to detect the overlapping lesion between the acetabulum and the femur...
December 8, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29241997/quadrilateral-plate-fractures-of-the-acetabulum-proposition-for-a-novel-classification-system
#13
Walid A ElNahal, Mahmoud Abdel Karim, Sherif A Khaled, Ahmed Hazem Abdelazeem, Hazem Abdelazeem
BACKGROUND: Currently, there is no definition or classification system for quadrilateral plate (QLP) fractures; the aim was to anatomically and radiologically characterise the QLP, propose a definition and classify QLP fractures. METHODS: This study included an anatomical component and a radiological component. The anatomical study aimed at defining the characteristics of the QLP; the QLP was identified using four articulating bony pelvis specimens. A titanium mesh was placed on the specimens' quadrilateral surface; standard anteroposterior and oblique views were obtained, and axial CT images, to determine the radiological landmarks...
December 1, 2017: Injury
https://www.readbyqxmd.com/read/29234663/reconstruction-with-iliac-pedestal-cup-and-proximal-femur-tumor-prosthesis-after-wide-resection-of-chondrosarcoma-10-year-follow-up-results
#14
Diogo Lino Moura, Rúben Fonseca, João Freitas, António Figueiredo, José Casanova
Chondrosarcoma is a malignant cartilage-forming neoplasm. It is difficult to treat because of resistance to both chemotherapy and radiation, making wide local excision the only treatment. This report presents an active, 43 year-old man who was diagnosed with recurrent clear cell chondrosarcoma of the proximal left femur, previously reconstructed with a total hip prosthesis, extending to the weight-bearing dome of the acetabulum. Cancer staging study revealed no signs of tumor dissemination at distance. Given the excellent functional status of the patient, the authors performed a Enneking-Dunham type periacetabular pelvic resection and resected en bloc, with the total hip prosthesis including 22 cm of the femur and a portion of the hip abductor apparatus...
November 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/29229239/in-vivo-postoperative-motion-analysis-of-metal-and-ceramic-bipolar-hip-hemiarthroplasty
#15
Toru Yoshioka, Nobukazu Okimoto, Yoshifumi Fuse, Makoto Kawasaki, Toshiharu Mori, Akinori Sakai, Tokifumi Majima
BACKGROUND: We hypothesized that ceramic bipolar shows less impingement between stem neck and outer head compared to metal bipolar, because of its low coefficient of friction with the acetabulum cartilage. In this paper, a three dimensional (3D) postoperative motion analysis has been used to assess the different motion characteristics of metal and ceramic bipolar hip hemiarthroplasty systems. METHODS: This study was conducted on 40 patients divided in two matched cohorts: 20 patients with metal bipolar and 20 patients with the ceramic bipolar...
December 8, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29222218/fat-embolism-a-rare-cause-of-perioperative-renal-transplant-dysfunction
#16
Jemima Scott, Neil Collin, Richard Baker, Rommel Ravanan
Fat embolism is a recognised complication of bony injury and orthopaedic surgery, commonly involving the long bones and pelvis. We report on the case of a 68-year-old renal transplant recipient who developed acute kidney injury following surgical stabilisation of metastatic carcinoma of the acetabulum and replacement of the proximal femur. A CT renal angiogram demonstrated a large fat embolus in the inferior vena cava (IVC) and left iliac veins below the level of IVC filter, with impaired renal perfusion. The risks of open or endovascular lipothrombectomy were felt to outweigh the potential benefits...
December 7, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29221903/discrete-element-analysis-is-a-valid-method-for-computing-joint-contact-stress-in-the-hip-before-and-after-acetabular-fracture
#17
Kevin C Townsend, Holly D Thomas-Aitken, M James Rudert, Andrew M Kern, Michael C Willey, Donald D Anderson, Jessica E Goetz
Evaluation of abnormalities in joint contact stress that develop after inaccurate reduction of an acetabular fracture may provide a potential means for predicting the risk of developing post-traumatic osteoarthritis. Discrete element analysis (DEA) is a computational technique for calculating intra-articular contact stress distributions in a fraction of the time required to obtain the same information using the more commonly employed finite element analysis technique. The goal of this work was to validate the accuracy of DEA-computed contact stress against physical measurements of contact stress made in cadaveric hips using Tekscan sensors...
November 16, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29221180/pelvic-recurrence-after-definitive-surgery-for-locally-advanced-rectal-cancer-a-retrospective-investigation-of-implications-for-precision-radiotherapy-field-design
#18
Chao Li, Yinju Zhu, Tong Tong, Ye Xu, Yun Guan, Jingwen Wang, Huankun Wang, Ji Zhu
Background: To analyze the local distribution of pelvic recurrence after total mesorectal excision, with a view to simplifying the formulation of optimal individualized radiotherapy plans. Methods: We retrospectively investigated the data of 168 patients diagnosed with recurrent pelvic cancer treated at Fudan University Shanghai Cancer Center between January 2008 and December 2012. The following were collected depending on availability: operative report, histological report, specimen photographs, initial preoperative images, images confirming local recurrence, and clinical history...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29218684/feasibility-of-arthroscopic-autologous-chondrocyte-implantation-in-the-hip-using-an-injectable-hydrogel
#19
Steffen Thier, Florian Baumann, Christel Weiss, Stefan Fickert
INTRODUCTION: In the long term the treatment of articular cartilage defects of the hip has the most direct impact on the postoperative outcome and should diminish degenerative changes caused by different pathologies. The purpose of this prospective feasibility study is to describe technical aspects of arthroscopic, injectable autologous chondrocyte implantation in the hip and to report the short-term outcome. METHODS: Full-thickness cartilage defects of 13 patients were treated arthroscopically with an injectable autologous chondrocyte transplantation product (Novocart Inject, Tetec) in a 2-step surgical procedure...
December 8, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29212625/use-of-tricortical-iliac-crest-strut-autograft-in-comminuted-posterior-wall%C3%A2-acetabular-fractures-a-case-series
#20
Sandeep Gupta, Naveen Mittal, Jagandeep Singh Virk
PURPOSE: The results for fixation of comminuted posterior wall acetabular fractures are not very promising with reported complications in terms of osteoarthritis, nonunion and malunion which subsequently require conversion to total hip arthroplasty. The conversion to total hip arthroplasty is possible in patients over 50 years of age but not in younger patients. So this requires new methods for salvage of the native hip in young patients. METHODS: There were six patients in our series with highly comminuted posterior wall acetabular fractures where the fragments were excised and the gap filled with tricortical anterior iliac-crest strut autograft, fixed with screws and plate...
November 6, 2017: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
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