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https://www.readbyqxmd.com/read/28428912/biomechanical-evaluation-of-carpal-kinematics-during-simulated-wrist-motion
#1
Helen Stoesser, Clare E Padmore, Masao Nishiwaki, Braden Gammon, G Daniel G Langohr, James A Johnson
Background Flexion and extension of the wrist is achieved primarily at the radiocarpal and midcarpal joints. Carpal kinematics have been investigated, although there remains no consensus regarding the relative contribution of each bone to wrist motion. Purpose To determine the kinematics of the scaphoid, lunate, and capitate during unconstrained simulated wrist flexion/extension and to examine the effect of motion direction on the contribution of each bone. Materials and Methods Seven cadaveric upper extremities were tested in a passive wrist simulator with 10N tone loads applied to the wrist flexors/extensors...
May 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/28419816/high-rate-of-osteoarthritis-after-osteochondritis-dissecans-fragment-excision-compared-with-surgical-restoration-at-a-mean-16-year-follow-up
#2
Thomas L Sanders, Ayoosh Pareek, Mitchel R Obey, Nicholas R Johnson, James L Carey, Michael J Stuart, Aaron J Krych
BACKGROUND: Osteochondritis dissecans (OCD) is a disorder of subchondral bone that causes adverse effects on the overlying cartilage and commonly affects the knee. The incidence of OCD and its long-term effect on the knee joint are controversial. Hypothesis/Purpose: The purpose of this study was to (1) evaluate the rate of osteoarthritis and knee arthroplasty in a population-based cohort of patients with OCD lesions treated operatively and (2) evaluate factors that may predispose patients to knee osteoarthritis and arthroplasty...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28409141/intrathoracic-fracture-dislocation-of-the-humerus-case-report-and-literature-review
#3
Wilson Carlos Sola Junior, Paulo Sérgio Dos Santos
Shoulder fracture-dislocations are uncommon. Those associated with intrathoracic dislocation are very rare conditions, resulting from high-energy trauma; usually, the affected limb is in an abduction position. In Brazil, there is only one report of a teenager with displacement of the epiphysis into the chest cavity; the present is the first adult patient report of intrathoracic dislocation of the humerus. The authors present the case of a patient female, aged 56 years, who was hit by motorcycle and thrown approximately 5 meters away...
March 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28401796/unicompartmental-knee-arthroplasties-are-performed-on-the-patients-with-radiologically-too-mild-osteoarthritis
#4
J Knifsund, J Hatakka, H Keemu, K Mäkelä, M Koivisto, T Niinimäki
BACKGROUND: Patient selection for either total knee arthroplasty or unicompartmental knee arthroplasty remains controversial. The latter has several reported advantages over total knee arthroplasty, but it also appears to have significant drawbacks in terms of revision rates. AIMS: This study aimed to determine the influence of the preoperative degree of osteoarthritis on the risk of reoperation following unicompartmental knee arthroplasty. METHODS: Surgery was carried out on 294 knees in 241 patients between 2001 and 2012 at a single institute, using cemented Oxford phase III unicompartmental knee arthroplasty...
April 1, 2017: Scandinavian Journal of Surgery: SJS
https://www.readbyqxmd.com/read/28395419/-individual-difference-of-coronal-bowing-of-femur-and-its-influence-on-the-lower-limbs-alignment-after-the-total-knee-arthroplasty
#5
W Wu, W S Guo, L M Cheng, Z H Liu, Q D Zhang, N F Zhang
Objective: To disclose the correlation between the femur bowing angle(FBA) and vulgas correction angle(VCA), anlysys its influence on the total knee arthroplasty and the lower limbs alignment. Methods: From Janurary 2013 to December 2015, 699 patients who had received total knee arthroplasty(TKA)were collected in the Department of Joint Surgery, China-Japan Friendship. The FBA, VCA, offset of the proximal femur, the lengh of the femur, the neck shaft angle of the femur of the eligible cases from the long leg X-ray were measured...
April 4, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28385944/the-stability-of-the-hip-after-the-use-of-a-proximal-femoral-endoprosthesis-for-oncological-indications-analysis-of-variables-relating-to-the-patient-and-the-surgical-technique
#6
E R Henderson, B J Keeney, E Pala, P T Funovics, W C Eward, J S Groundland, L K Ehrlichman, S S E Puchner, B E Brigman, J E Ready, H T Temple, P Ruggieri, R Windhager, G D Letson, F J Hornicek
AIMS: Instability of the hip is the most common mode of failure after reconstruction with a proximal femoral arthroplasty (PFA) using an endoprosthesis after excision of a tumour. Small studies report improved stability with capsular repair of the hip and other techniques, but these have not been investigated in a large series of patients. The aim of this study was to evaluate variables associated with the patient and the operation that affect post-operative stability. We hypothesised an association between capsular repair and stability...
April 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28385941/patients-undergoing-surgical-hip-dislocation-for-the-treatment-of-acetabular-fractures-show-favourable-long-term-outcome
#7
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/28385937/multimodal-infiltration-of-local-anaesthetic-in-total-knee-arthroplasty-is-posterior-capsular-infiltration-worth-the-risk-a-prospective-double-blind-randomised-controlled-trial
#8
P Pinsornsak, S Nangnual, K Boontanapibul
AIMS: Multimodal infiltration of local anaesthetic provides effective control of pain in patients undergoing total knee arthroplasty (TKA). There is little information about the added benefits of posterior capsular infiltration (PCI) using different combinations of local anaesthetic agents. Our aim was to investigate the effectiveness of the control of pain using multimodal infiltration with and without infiltration of the posterior capsule of the knee. PATIENTS AND METHODS: In a double-blind, randomised controlled trial of patients scheduled for unilateral primary TKA, 86 were assigned to be treated with multimodal infiltration with (Group I) or without (Group II) PCI...
April 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28385936/unsatisfactory-outcomes-following-unicompartmental-knee-arthroplasty-in-patients-with-partial-thickness-cartilage-loss-a-medium-term-follow-up
#9
T W Hamilton, H G Pandit, A Inabathula, S J Ostlere, C Jenkins, S J Mellon, C A F Dodd, D W Murray
AIMS: While medial unicompartmental knee arthroplasty (UKA) is indicated for patients with full-thickness cartilage loss, it is occasionally used to treat those with partial-thickness loss. The aim of this study was to investigate the five-year outcomes in a consecutive series of UKAs used in patients with partial thickness cartilage loss in the medial compartment of the knee. PATIENTS AND METHODS: Between 2002 and 2014, 94 consecutive UKAs were undertaken in 90 patients with partial thickness cartilage loss and followed up independently for a mean of six years (1 to 13)...
April 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28385935/proximal-translation-of-1-mm-within-the-first-two-years-of-revision-total-hip-arthroplasty-correctly-predicts-whether-or-not-an-acetabular-component-is-loose-in-80-of-cases-a-case-control-study-with-confirmed-intra-operative-outcomes
#10
Y S Kim, J M Abrahams, S A Callary, C De Ieso, K Costi, D W Howie, L B Solomon
AIMS: The purpose of this study was to determine the sensitivity, specificity and predictive values of previously reported thresholds of proximal translation and sagittal rotation of cementless acetabular components used for revision total hip arthroplasty (THA) at various times during early follow-up. PATIENTS AND METHODS: Migration of cementless acetabular components was measured retrospectively in 84 patients (94 components) using Ein-Bild-Rontgen-Analyse (EBRA-Cup) in two groups of patients...
April 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28385934/the-diagnostic-performance-of-radiographic-criteria-to-detect-aseptic-acetabular-component-loosening-after-revision-total-hip-arthroplasty
#11
J M Abrahams, Y S Kim, S A Callary, C De Ieso, K Costi, D W Howie, L B Solomon
AIMS: This study aimed to determine the diagnostic performance of radiographic criteria to detect aseptic acetabular loosening after revision total hip arthroplasty (THA). Secondary aims were to determine the predictive values of different thresholds of migration and to determine the predictive values of radiolucency criteria. PATIENTS AND METHODS: Acetabular component migration to re-revision was measured retrospectively using Ein-Bild-Rontgen-Analyse (EBRA-Cup) and manual measurements (Sutherland method) in two groups: Group A, 52 components (48 patients) found not loose at re-revision and Group B, 42 components (36 patients) found loose at re-revision between 1980 and 2015...
April 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28385933/risk-factors-for-post-operative-periprosthetic-fractures-following-primary-total-hip-arthroplasty-with-a-proximally-coated-double-tapered-cementless-femoral-component
#12
K Gromov, A Bersang, C S Nielsen, T Kallemose, H Husted, A Troelsen
AIMS: The aim of this study was to identify patient- and surgery-related risk factors for sustaining an early periprosthetic fracture following primary total hip arthroplasty (THA) performed using a double-tapered cementless femoral component (Bi-Metric femoral stem; Biomet Inc., Warsaw, Indiana). PATIENTS AND METHODS: A total of 1598 consecutive hips, in 1441 patients receiving primary THA between January 2010 and June 2015, were retrospectively identified. Level of pre-operative osteoarthritis, femoral Dorr type and cortical index were recorded...
April 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28385932/can-we-predict-which-dysplastic-hips-will-require-acetabular-augmentation-during-total-hip-arthroplasty-based-on-pre-operative-radiographs
#13
A G Marsh, A Nisar, M El Refai, S Patil, R M D Meek
AIMS: The purpose of this study was to evaluate whether an innovative templating technique could predict the need for acetabular augmentation during primary total hip arthroplasty for patients with dysplastic hips. PATIENTS AND METHODS: We developed a simple templating technique to estimate acetabular component coverage at total hip arthroplasty, the True Cup: False Cup (TC:FC) ratio. We reviewed all patients with dysplastic hips who underwent primary total hip arthroplasty between 2005 and 2012...
April 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28385931/total-hip-arthroplasty-using-a-monobloc-cementless-femoral-stem-for-patients-with-childhood-perthes-disease
#14
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/28384844/morphometry-of-proximal-femur-in-indian-population
#15
Minakshi Verma, Sheetal Joshi, Anita Tuli, Shashi Raheja, Priyanka Jain, Priyanka Srivastava
INTRODUCTION: Total hip arthroplasty is a commonly performed surgery now-a-day. There are regional and racial variations in the stature of the population worldwide. So there is always need of population specific data for making best fit prosthesis. AIM: The present study was done to measure the parameters of proximal femur and to analyse their correlation by using standard statistical analysis. MATERIALS AND METHODS: Ninety one dry bones (44 left and 47 right) were used...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28384558/temporary-total-hip-arthroplasty-like-spacer-for-treating-an-infected-periprosthetic-femoral-fracture-using-a-long-stem-a-case-report
#16
Youngwoo Kim, Yoshiaki Katsura, Nina Kasahara, Takashi Kasahara, Masashi Kanamura, Keiichi Kawanabe
INTRODUCTION: Infected periprosthetic femoral fractures are among the most complex and significant complications of total hip arthroplasty (THA). We report the novel use of a temporary THA-like spacer for treating an infected periprosthetic femoral fracture after revision surgery using a long stem. CASE PRESENTATION: We present a 72-year-old woman sustained a left infected periprosthetic femoral fracture after revi - streptococci in the culture sample. On suspicion of a periprosthetic joint infection, we planned a two-stage procedure...
March 22, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28378003/ultrasound-gel-minimizes-third-body-debris-with-partial-hardware-removal-in-joint-arthroplasty
#17
Aidan C McGrory, Lee Replogle, Donald Endrizzi
Hundreds of thousands of revision surgeries for hip, knee, and shoulder joint arthroplasties are now performed worldwide annually. Partial removal of hardware during some types of revision surgeries may create significant amounts of third body metal, polymer, or bone cement debris. Retained debris may lead to a variety of negative health effects including damage to the joint replacement. We describe a novel technique for the better containment and easier removal of third body debris during partial hardware removal...
March 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/28363894/early-performance-based-and-patient-reported-outcomes-of-a-contemporary-taper-fit-bone-conserving-short-stem-femoral-component-in-total-hip-arthroplasty
#18
F Hossain, S Konan, A Volpin, F S Haddad
AIMS: The aim of this study was to compare early functional and health related quality of life outcomes (HRQoL) in patients who have undergone total hip arthroplasty (THA) using a bone conserving short stem femoral component and those in whom a conventional length uncemented component was used. Outcome was assessed using a validated performance based outcome instrument as well as patient reported outcome measures (PROMs). PATIENTS AND METHODS: We prospectively analysed 33 patients whose THA involved a contemporary proximally porous coated tapered short stem femoral component and 53 patients with a standard conventional femoral component, at a minimum follow-up of two years...
April 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28363892/mid-term-changes-in-blood-metal-ion-levels-after-articular-surface-replacement-arthroplasty-of-the-hip
#19
MULTICENTER STUDY
V P Galea, I Laaksonen, S J Matuszak, J W Connelly, O Muratoglu, H Malchau
AIMS: Our first aim was to determine whether there are significant changes in the level of metal ions in the blood at mid-term follow-up, in patients with an Articular Surface Replacement (ASR) arthroplasty. Secondly, we sought to identify risk factors for any increases. PATIENTS AND METHODS: The study involved 435 patients who underwent unilateral, metal-on-metal (MoM) hip resurfacing (HRA) or total hip arthroplasty (THA). These patients all had one measurement of the level of metal ions in the blood before seven years had passed post-operatively (early evaluation) and one after seven years had passed post-operatively (mid-term evaluation)...
April 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28363891/cement-in-cement-revision-of-the-femoral-stem-analysis-of-1179-first-time-revisions-in-the-swedish-hip-arthroplasty-register
#20
COMPARATIVE STUDY
P H J Cnudde, J Kärrholm, O Rolfson, A J Timperley, M Mohaddes
AIMS: Compared with primary total hip arthroplasty (THA), revision surgery can be challenging. The cement-in-cement femoral revision technique involves removing a femoral component from a well-fixed femoral cement mantle and cementing a new stem into the original mantle. This technique is widely used and when carried out for the correct indications, is fast, relatively inexpensive and carries a reduced short-term risk for the patient compared with the alternative of removing well-fixed cement...
April 2017: Bone & Joint Journal
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