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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
#1
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/28400660/anthropometric-analysis-of-the-hip-joint-in-south-indian-population-using-computed-tomography
#2
Vetrivel Chezian Sengodan, Elangovan Sinmayanantham, J Saravana Kumar
BACKGROUND: Proximal femur has a significant functional modification on erect bipedal posture. Various proximal femoral parameters were analyzed in Western literature. This information was utilized in prosthetic designing. Implants designed for Western people are used in Indian patients undergoing hip surgeries such as internal fixation and replacement arthroplasty. MATERIALS AND METHODS: The study was done among 200 individuals (400 hips) with a normal hip joint after ethical committee clearance...
March 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28395388/results-of-a-modular-femoral-revision-system-before-and-after-taper-roller-hardening-in-total-hip-arthroplasty
#3
Dean J Marshall, Keith R Berend, Michael J Morris, Joanne B Adams, Adolph V Lombardi
INTRODUCTION: Modular component options can aid in addressing complex femoral reconstructions in total hip arthroplasty (THA) by allowing for customization of version control and proximal to distal sizing. However, component breakage at the modular junction has occurred, particularly in the presence of poor bone stock. A taper roller hardening (RH) process was developed to strengthen the modular junction to reduce breakage. The purpose of this study is to review THA patients before and after taper roller hardening to compare stem survival and frequency of breakage...
April 11, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28385931/total-hip-arthroplasty-using-a-monobloc-cementless-femoral-stem-for-patients-with-childhood-perthes-disease
#4
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/28385930/decreased-and-increased-relative-acetabular-volume-predict-the-development-of-osteoarthritis-of-the-hip-an-osteological-review-of-1090-hips
#5
D S Weinberg, D F K Williamson, M B Millis, R W Liu
AIMS: Recently, there has been considerable interest in quantifying the associations between bony abnormalities around and in the hip joint and osteoarthritis (OA). Our aim was to investigate the relationships between acetabular undercoverage, acetabular overcoverage, and femoroacetabular impingement (FAI) with OA of the hip, which currently remain controversial. MATERIALS AND METHODS: A total of 545 cadaveric skeletons (1090 hips) from the Hamann-Todd osteological collection were obtained...
April 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28377989/spatial-heterogeneity-in-the-canalicular-density-of-the-osteocyte-network-in-human-osteons
#6
Felix Repp, Philip Kollmannsberger, Andreas Roschger, Michael Kerschnitzki, Andrea Berzlanovich, Gerlinde M Gruber, Paul Roschger, Wolfgang Wagermaier, Richard Weinkamer
Osteocytes interconnect with each other forming an intricate cell network within the mineralized bone matrix. One important function of the osteocyte network is the mechano-regulation of bone remodeling, where a possible mechanism includes the fluid flow through the porosity housing the cell network - the osteocyte lacuno-canalicular network (OLCN). In our study the OLCN in human osteons was three-dimensionally imaged with the aim to obtain a quantitative description of the canalicular density and spatial variations of this quantity within osteons...
June 2017: Bone Reports
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
#7
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/28376828/all-polyethylene-tibial-components-in-distal-femur-limb-salvage-surgery-a-finite-element-analysis-based-on-promising-clinical-outcomes
#8
Fan Tang, Yong Zhou, Wenli Zhang, Li Min, Rui Shi, Yi Luo, Hong Duan, Chongqi Tu
BACKGROUND: Whether all-polyethylene tibial (APT) components are beneficial to patients who received distal femur limb-salvage surgery lacks high-quality clinical follow-up and mechanical evidence. This study aimed to investigate the biomechanics of the distal femur reconstructed with APT tumor knee prostheses using finite element (FE) analysis based on our previous, promising clinical outcome. METHODS: Three-dimensional FE models that use APT and metal-backed tibial (MBT) prostheses to reconstruct distal femoral bone defects were developed and input into the Abaqus FEA software version 6...
April 4, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28375671/outcome-in-design-specific-comparisons-between-highly-crosslinked-and-conventional-polyethylene-in-total-hip-arthroplasty
#9
Per-Erik Johanson, Ove Furnes, Leif Ivar Havelin, Anne Marie Fenstad, Alma B Pedersen, Søren Overgaard, Göran Garellick, Keijo Mäkelä, Johan Kärrholm
Background and purpose - Most registry studies regarding highly crosslinked polyethylene (XLPE) have focused on the overall revision risk. We compared the risk of cup and/or liner revision for specific cup and liner designs made of either XLPE or conventional polyethylene (CPE), regarding revision for any reason and revision due to aseptic loosening and/or osteolysis. Patients and methods - Using the Nordic Arthroplasty Register Association (NARA) database, we identified cup and liner designs where either XLPE or CPE had been used in more than 500 THAs performed for primary hip osteoarthritis...
April 4, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/28365071/trochanteric-entry-femoral-nails-yield-better-femoral-version-and-lower-revision-rates-a-large-cohort-multivariate-regression-analysis
#10
Richard S Yoon, Mark J Gage, David K Galos, Derek J Donegan, Frank A Liporace
INTRODUCTION: Intramedullary nailing (IMN) has become the standard of care for the treatment of most femoral shaft fractures. Different IMN options include trochanteric and piriformis entry as well as retrograde nails, which may result in varying degrees of femoral rotation. The objective of this study was to analyze postoperative femoral version between three types of nails and to delineate any significant differences in femoral version (DFV) and revision rates. MATERIALS & METHODS: Over a 10-year period, 417 patients underwent IMN of a diaphyseal femur fracture (AO/OTA 32A-C)...
March 18, 2017: Injury
https://www.readbyqxmd.com/read/28351208/angiographic-dissection-patterns-and-patency-outcomes-after-balloon-angioplasty-for-superficial-femoral-artery-disease
#11
Masahiko Fujihara, Mitsuyoshi Takahara, Shinya Sasaki, Kiyonori Nanto, Makoto Utsunomiya, Osamu Iida, Yoshiaki Yokoi
PURPOSE: To investigate the angiographic dissection patterns after balloon angioplasty for superficial femoral artery (SFA) lesions, the clinical outcome associated with each dissection pattern, and the predictive factors for severe dissection. METHODS: A retrospective, multicenter analysis examined 621 patients (mean age 72.8±9.5 years; 414 men) with 748 symptomatic de novo SFA lesions treated with endovascular therapy. Vessel dissection after the initial balloon angioplasty procedure was graded into 7 types according to a modified version of the coronary artery classification types A to F...
March 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28348929/curvature-reduces-bending-strains-in-the-quokka-femur
#12
Kyle McCabe, Keith Henderson, Jess Pantinople, Hazel L Richards, Nick Milne
This study explores how curvature in the quokka femur may help to reduce bending strain during locomotion. The quokka is a small wallaby, but the curvature of the femur and the muscles active during stance phase are similar to most quadrupedal mammals. Our hypothesis is that the action of hip extensor and ankle plantarflexor muscles during stance phase place cranial bending strains that act to reduce the caudal curvature of the femur. Knee extensors and biarticular muscles that span the femur longitudinally create caudal bending strains in the caudally curved (concave caudal side) bone...
2017: PeerJ
https://www.readbyqxmd.com/read/28345404/are-bone-bruise-characteristics-and-articular-cartilage-pathology-associated-with-inferior-outcomes-2-and-6-years-after-anterior-cruciate-ligament-reconstruction
#13
Christian Lattermann, Cale A Jacobs, Emily K Reinke, Erica A Scaramuzza, Laura J Huston, Warren R Dunn, Kurt P Spindler
Objective To determine (1) if bone bruise characteristics seen on magnetic resonance imaging are associated with patient-reported outcomes prior to and following anterior cruciate ligament reconstruction and (2) if the combined presence of bone bruises with articular cartilage pathology results in inferior 2- or 6-year outcomes. Design Bone bruise volume and severity were measured on 81 patients' preoperative magnetic resonance imaging in the medial and lateral femoral condyle (MFC, LFC) and medial and lateral tibial plateau (MTP, LTP) using the Costa-Paz classification and a modified version of Roemer and Bohndorf's technique...
April 2017: Cartilage
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
#14
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
#15
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/28302428/comparison-of-intraoperative-fluoroscopic-dunn-view-with-magnetic-resonance-imaging-to-determine-femoral-version
#16
Cara Beth Lee, Hillard T Spencer
PURPOSE: To compare femoral version measured with a fluoroscopic Dunn view taken at the time of hip arthroscopy with values derived from axial magnetic resonance imaging (MRI) scans. METHODS: Of 159 hip arthroscopies performed from January 2014 through March 2015, 50 patients had magnetic resonance imaging (MRI) scans with a protocol that incorporates femoral version analysis. Dunn views are performed as a routine part of the preoperative fluoroscopic examination at the time of arthroscopy...
March 13, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28291651/challenges-in-total-hip-arthroplasty-in-the-setting-of-developmental-dysplasia-of-the-hip
#17
Eric M Greber, Christopher E Pelt, Jeremy M Gililland, Mike B Anderson, Jill A Erickson, Christopher L Peters
BACKGROUND: Developmental dysplasia of the hip (DDH) is a recognized cause of secondary arthritis, which may eventually lead to total hip arthroplasty (THA). An understanding of the common acetabular and femoral morphologic abnormalities will aid the surgeon in preparing for the complexity of the surgical case. METHODS: We present the challenges associated with acetabular and femoral morphologies that may be present in the dysplastic hip and discuss surgical options to consider when performing THA...
February 22, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28255504/usefulness-of-urinoculture-to-patients-with-dementia-and-femoral-neck-fracture-at-admission-to-hospital-preliminary-results
#18
Laura Garcia-Nuño, Carlos Villamil, Araceli González-Cuevas, David Martí, Silvia Capilla, Maria José Vives, Xavier Oncins, Pere Torner, Juan Castellanos, Lluís Font-Vizcarra
INTRODUCTION: While preoperative urinary tract infection (UTI) has the potential to cause bacteremia and postsurgical acute prosthetic joint infections (APJIs), the influence of asymptomatic bacteriuria (AB) in these infections remains unclear. So the majority of guidelines not recommend the treatment of AB prior to the surgery. However, as patients with dementia usually cannot explain the symptoms of dysuria, the differential diagnosis between AB and UTI may be very difficult in this group of patients...
March 2017: Geriatric Orthopaedic Surgery & Rehabilitation
https://www.readbyqxmd.com/read/28246095/explant-analysis-of-the-biomet-magnum-recap-metal-on-metal-hip-joint
#19
S C Scholes, B J Hunt, V M Richardson, D J Langton, E Smith, T J Joyce
OBJECTIVES: The high revision rates of the DePuy Articular Surface Replacement (ASR) and the DePuy ASR XL (the total hip arthroplasty (THA) version) have led to questions over the viability of metal-on-metal (MoM) hip joints. Some designs of MoM hip joint do, however, have reasonable mid-term performance when implanted in appropriate patients. Investigations into the reasons for implant failure are important to offer help with the choice of implants and direction for future implant designs...
February 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28244927/accuracy-and-reliability-of-computed-tomography-and-magnetic-resonance-imaging-compared-with-true-anatomic-femoral-version
#20
Michael J Beebe, James D Wylie, Bill G Bodine, Ashley L Kapron, Travis G Maak, Omer Mei-Dan, Stephen K Aoki
BACKGROUND: Abnormal torsion of the femur is correlated to lower extremity pathologies. Although computed tomography (CT) scan is the gold standard torsional measurement, magnetic resonance imaging (MRI) is proposed as a viable alternative. Our aim was to determine the accuracy and consistency of MRI and CT femur rotational studies based on 4 described protocols. METHODS: Twelve cadaveric femora were stripped of soft tissue before imaging and physical assessment of torsion...
February 27, 2017: Journal of Pediatric Orthopedics
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