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Anteversion

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https://www.readbyqxmd.com/read/28438455/lesser-trochanter-size-on-plain-anteroposterior-radiographs-correlates-with-native-femoral-anteversion
#1
Michael C Worlicek, Michael L Wörner, Benjamin S Craiovan, Florian Zeman, Joachim Grifka, Tobias F Renkawitz, Markus Weber
BACKGROUND: Assessing femoral version in orthopedic surgery is important for preoperative planning of total hip arthroplasty, especially for recognizing excessive anteversion or retroversion. The present study addressed the following: (1) Is the position of the lesser trochanter correlated to the femoral neck axis? (2) If so, may femoral version be assessed by means of plain pelvic radiographs? METHODS: Three-dimensional computed tomography scans of 60 patients undergoing minimally invasive cement-free total hip arthroplasty were retrospectively analyzed, particularly with regard to the relation between the femoral neck axis and the lesser trochanter, the femoral version, and the size of the projected lesser trochanter in different rotational positions...
April 1, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28416826/-surgical-technique-and-early-clinical-outcomes-of-direct-anterior-approach-to-total-hip-arthroplasty
#2
M Lv, J Q Zhang, X S Wang, Y Huang, W Li, C Y Zhang
OBJECTIVE: To describe the surgical technique of direct anterior approach to total hip arthroplasty and to report the early clinical outcomes. METHODS: A series of 100 consecutive, unselected patients who had 116 primary total hip arthroplasty surgeries (16 bilateral) done through direct anterior approach from March 11 2015 to June 21 2016 was reviewed. There were 50 male patients and 50 female patients. The average patient age was 51 years, and the average body mass index was 24...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28416825/-comparison-of-efficacy-and-safety-between-the-anterior-and-the-posterior-approaches-to-total-hip-arthroplasty
#3
Y J Zhang, J Li, K Qi, C C Xue, W D Xu
OBJECTIVE: To compare the efficacy and safety between direct anterior approach (DAA) and posterior approach (PA) in total hip arthroplasty. METHODS: This study evaluated postoperative results of 92 consecutive total hip arthroplasties performed by a single surgeon; 44 from the DAA, and 48 from PA. The age, body mass index, operation time, blood loss, hospital stay, positioning of the artificial hip, postoperative Harris score and postoperative complications were recorded and analyzed...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28413130/arthroscopic-treatment-of-labral-tears-of-the-hip-in-adolescents-patterns-of-clinical-presentation-intra-articular-derangements-radiological-associations-and-minimum-2-year-outcomes
#4
Sivashankar Chandrasekaran, Nader Darwish, Edwin O Chaharbakhshi, Parth Lodhia, Carlos Suarez-Ahedo, Benjamin G Domb
PURPOSE: To report on patterns of clinical presentation, intra-articular derangements, radiological associations, and minimum 2-year outcomes after hip arthroscopy (HA) in patients 18 years or younger. METHODS: This study was a retrospective case series on patients 18 years or younger who had undergone HA for labral tears that had failed nonoperative management from April 2008 to April 2013 with a minimum 2-year follow-up. Exclusion criteria were previous hip conditions or surgery...
April 13, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28403960/anatomical-causes-of-difficult-embryo-transfer-during-in-vitro-fertilization
#5
L Larue, G Keromnes, A Massari, C Roche, D Bouret, N G Cassuto, J P Ayel
OBJECTIVES: Identify, define and validate through statistical analysis the anatomical causes of difficult embryo transfers (ET). MATERIALS AND METHODS: This observational study, carried out in 306 IVF candidates, compared the frequency of anatomical anomalies of the uterus and cervix in women who underwent an easy ET with that in women who underwent a difficult ET. Anatomical anomalies were detected during an assessment of the cervix and uterus including transvaginal ultrasound, hysteroscopy and a mock transfer...
January 2017: J Gynecol Obstet Hum Reprod
https://www.readbyqxmd.com/read/28399325/influence-of-surgical-approach-on-pelvic-lift-in-hip-arthroplasty-during-cup-insertion
#6
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/28392134/change-in-pelvic-sagittal-inclination-from-supine-to-standing-position-before-hip-arthroplasty
#7
Keisuke Uemura, Masaki Takao, Yoshito Otake, Koki Koyama, Futoshi Yokota, Hidetoshi Hamada, Takashi Sakai, Yoshinobu Sato, Nobuhiko Sugano
BACKGROUND: Cup anteversion and inclination are important for avoiding implant impingement and dislocation in total hip arthroplasty. However, functional cup anteversion and cup inclination also change as the pelvic sagittal inclination (PSI) changes. Therefore, PSI in both supine and standing positions was measured in a large cohort in this study. METHODS: A total of 422 patients (median age, 61; range, 15-87) who underwent total hip arthroplasty were the subjects of this study...
March 16, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28385931/total-hip-arthroplasty-using-a-monobloc-cementless-femoral-stem-for-patients-with-childhood-perthes-disease
#8
K H Lee, W-L Jo, Y C Ha, Y K Lee, S B Goodman, K H Koo
AIMS: Modular or custom-made femoral components have been preferred for total hip arthroplasty (THA) in patients with a history of Perthes' disease because of the distortion in the anatomy of the proximal femur. However, it has not been established whether a monobloc cementless stem will fit the distorted proximal femur or whether the results of the procedure are satisfactory in this group of patients. PATIENTS AND METHODS: We reviewed 68 consecutive patients who had undergone THA for childhood Perthes' disease between June 2003 and December 2008...
April 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28385170/danish-survey-of-acetabular-component-positioning-practice-during-primary-total-hip-arthroplasty
#9
Dana Cotong, Anders Troelsen, Henrik Husted, Kirill Gromov
INTRODUCTION: The Lewinnek and Callanan "safe zones" have been widely used to minimise the dislocation fre-quency in total hip arthroplasty (THA), but recent studies have questioned the association between "safe zones" and lower dislocation rates. The purpose of this study was to investigate: 1) if hip surgeons agree on a specific "safe zone" for cup positioning and 2) surgeons' surgical practice patterns regarding recurring instability in primary THA. METHODS: A survey was performed among hip surgeons during the 2015 Annual Meeting of the Danish Orthopaedic Society...
April 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28377262/evaluation-of-malrotation-following-intramedullary-nailing-in-a-femoral-shaft-fracture-model-can-a-3d-c-arm-improve-accuracy
#10
Austin J Ramme, Jonathan Egol, Gregory Chang, Roy I Davidovitch, Sanjit Konda
INTRODUCTION: Difficulty determining anatomic rotation following intramedullary (IM) nailing of the femur continues to be problematic for surgeons. Clinical exam and fluoroscopic imaging of the hip and knee have been used to estimate femoral version, but are inaccurate. We hypothesize that 3D c-arm imaging can be used to accurately measure femoral version following IM nailing of femur fractures to prevent rotational malreduction. METHODS: A midshaft osteotomy was created in a femur Sawbone to simulate a transverse diaphyseal fracture...
March 31, 2017: Injury
https://www.readbyqxmd.com/read/28373980/clinical-results-and-serum-metal-ion-concentrations-following-ceramic-on-metal-total-hip-arthroplasty-at-a-mean-follow-up-of-60-months
#11
W Maurer-Ertl, D Pranckh-Matzke, J Friesenbichler, G Bratschitsch, L A Holzer, M Maier, A Leithner
Background. Increased metal ion levels following total hip arthroplasty (THA) with metal-on-metal bearings are a highly debated topic. Local soft tissue reactions with chronic pain and systemic side effects such as neuropathy are described. The aim of the current study was to determine the serum metal ion concentrations of Cobalt (Co) and Chrome (Cr) after THA with a ceramic-on-metal (CoM) bearing. Patients and Methods. Between 2008 and 2010, 20 patients underwent THA using a CoM bearing. Clinical function was evaluated by standardized scores systems (Harris Hip Score and WOMAC Score) and radiological examination included X-rays...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28371495/safe-zone-of-posterior-screw-insertion-for-talar-neck-fractures-on-3-dimensional-reconstruction-model
#12
Jian-Qun Wu, Sheng-Hui Ma, Song Liu, Cheng-He Qin, Dan Jin, Bin Yu
OBJECTIVE: To investigate the optimal posterior screw placement and the geometry of safe zones for screw insertion in the talar neck. METHODS: Computed tomography data for 15 normal feet were imported into Mimics 10.01 software for 3-dimensional reconstruction; 4.0-mm-diameter screws were simulated from the lateral tubercle of the posterior process of the talus to the talar head. The range of screw paths trajectories and screw lengths at nine locations that did not breach the cortex of the talus were evaluated...
February 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28347158/effective-dose-in-low-dose-ct-compared-with-radiography-for-templating-of-total-hip-arthroplasty
#13
Mats Geijer, Gustav Rundgren, Lars Weber, Gunnar Flivik
Background Recently, total hip arthroplasty (THA) has come to focus on restoration of individual anatomy including femoral neck anteversion and global offset (femoral and acetabular offset). Three-dimensional (3D) computed tomography (CT) data could provide a better basis for preoperative templating. The use of CT has been hampered by high radiation dose. Purpose To evaluate the effective dose used in pelvis and hip CT for THA templating. Material and Methods CT data from two clinical trials of THA were evaluated for CT scan length and volume CT dose index (CTDIvol)...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28341265/does-a-titanium-sleeve-reduce-the-frequency-of-pseudotumors-in-metal-on-metal-total-hip-arthroplasty-at-5-7years-follow-up
#14
M H Hjorth, N Egund, I Mechlenburg, J Gelineck, S S Jakobsen, K Soballe, M Stilling
INTRODUCTION: Little is known about pseudotumor frequency and risk factors for pseudotumor formation among different types of metal-on-metal (MoM) hip arthroplasties. A lower release of chromium and cobalt have been reported in MoM hip arthroplasties with a titanium sleeve compared to MoM designs without a titanium sleeve, but yet it is unknown whether a titanium sleeve reduces the pseudotumor frequency. We conducted a cross-sectional study to investigate: 1) pseudotumor frequency, 2) risk factors of pseudotumor formation 3) and correlations between pseudotumors, serum metal-ions, implant position, and clinical symptoms...
December 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28336192/radiological-morphology-variances-of-transient-osteoporosis-of-the-hip
#15
Ryosuke Yamaguchi, Takuaki Yamamoto, Goro Motomura, Satoshi Ikemura, Kenyu Iwasaki, Garida Zhao, Yukihide Iwamoto
BACKGROUND: Although several morphological abnormalities or variances of the hip joint have been proposed to be associated with hip joint degeneration, few studies have investigated any radiological features in patients with transient osteoporosis of the hip (TOH). The purpose of this study is to evaluate the morphological variances of the hip joint in TOH patients radiographically. METHODS: The TOH group consisted of 31 hips in 31 patients. Age- and gender-matched asymptomatic hips in patients with unilateral osteonecrosis of the femoral head were served as controls...
March 20, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28336189/3d-cad-reverse-engineering-technique-for-assessment-of-thai-morphology-proximal-femur-and-acetabulum
#16
Nattapon Chantarapanich, Sattaya Rojanasthien, Bancha Chernchujit, Banchong Mahaisavariya, Kavin Karunratanakul, Prasert Chalermkarnnon, Chinnawit Glunrawd, Kriskrai Sitthiseripratip
PURPOSE: To assess morphological parameters of proximal femur and acetabulum in Thai population with three-dimensional measurement technique, and to analysis of collateral side symmetric, gender difference, and correlation between morphometric parameters. METHODS: Investigation was performed in 240 femurs. All three-dimensional femur models were acquitted from 64-slice spiral CT scanner. Morphometric parameters under consideration included acetabular diameter, femoral head diameter, shaft isthmus location, intramedullary canal diameter, diaphyseal diameter, femoral head height, femoral neck isthmus, femoral neck length, neck shaft angle, bow angle, and anteversion angle...
March 20, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28331928/computed-tomographic-evaluation-of-femoral-and-tibial-conformation-in-english-staffordshire-bull-terriers-with-and-without-congenital-medial-patellar-luxation
#17
Mark Newman, Katja Voss
OBJECTIVE: To compare hindlimb conformation of English Staffordshire Bull Terriers with and without medial patellar luxation using computed tomography. METHODS: Hindlimb computed tomography (CT) was performed on six English Staffordshire Bull Terriers with grade II or III medial patellar luxation, and six without medial patellar luxation. Inclination angle, femoral condyle trochanteric angle, anteversion angle (AA), distal anteversion angle (DAA), proximal anteversion angle (PAA), femoral varus angle (FVA), tibial valgus angle (TVA), and tibial torsion angle (TTA) were measured...
March 23, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/28328732/reliable-method-for-avoiding-malrotation-deformity-after-intramedullary-nailing-of-comminuted-femur-fractures-clinical-validation-of-a-previously-described-technique
#18
Ashoke Sathy, Jonathan C Barnwell, Sean N Shahrestani, Daniel Moore
OBJECTIVES: To evaluate a previously described technique using the inherent anteversion of intramedullary nail (IMN) to avoid malrotation in comminuted femur fractures and describe the use of magnetic resonance imaging (MRI) as an alternative method for assessing postoperative femoral version. DESIGN: Prospective consecutive cohort study. SETTING: Level I trauma center. PATIENT/PARTICIPANTS: Twenty-five consecutive patients with comminuted femur fractures (Winquist III/IV, OTA/AO 32-B/32-C) treated by a single surgeon with IMN between September 1, 2011, and February 28, 2015...
April 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28328561/does-orientation-of-the-femoral-head-affect-acetabular-development-an-experimental-study-in-lamb
#19
Luis Moraleda, Christian Bravo, Francisco Forriol, Javier Albiñana
BACKGROUND: Derotational osteotomy of the proximal femur has proved to be effective in the treatment of residual acetabular dysplasia. However, the reason why this osteotomy is effective remains debatable. The purpose of this study is to investigate if an alteration of femoral head orientation affects acetabular growth. METHODS: A proximal femoral osteotomy was performed in 21 lambs aged 3 months: 5 varus osteotomies (110 degrees), 4 valgus osteotomies (150 degrees), and 12 derotation osteotomies...
March 21, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28303384/spinopelvic-parameter-changes-and-low-back-pain-improvement-due-to-femoral-neck-anteversion-in-patients-with-severe-unilateral-primary-hip-osteoarthritis-undergoing-total-hip-replacement
#20
Andrea Piazzolla, Giuseppe Solarino, Davide Bizzoca, Viola Montemurro, Pedro Berjano, Claudio Lamartina, Carlotta Martini, Biagio Moretti
PURPOSE: The study of the interrelation between hip and spine disorders is gaining increasing importance in the last years, but the link between Hip Osteoarthritis (HOA) and Low Back Pain (LBP) remains still unclear. Aim of the study is to assess the relationship between Femoral Neck Anteversion (FNA), LBP, and spinopelvic parameters in patients undergoing Total Hip Replacement (THR) for unilateral severe primary HOA. MATERIALS AND METHODS: 91 patients were recruited...
March 16, 2017: European Spine Journal
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