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https://www.readbyqxmd.com/read/28537647/robotic-assisted-total-hip-arthroplasty-outcomes-at-minimum-two-year-follow-up
#1
Richard L Illgen, Brandon R Bukowski, Rasheed Abiola, Paul Anderson, Morad Chughtai, Anton Khlopas, Michael A Mont
BACKGROUND: Component malposition in total hip arthroplasty (THA) contributes to instability and early failure. Robotic-assisted total hip arthroplasty (rTHA) utilizes CT-based planning with haptically-guided bone preparation and implant insertion to optimize component position accuracy. This study compared acetabular component position and postoperative complications following manual THA (mTHA) with rTHA. MATERIALS AND METHODS: Consecutive primary THAs performed by one surgeon at three intervals were analyzed in this retrospective cohort study: the initial 100 consecutive manual THAs (mTHA) in clinical practice (year 2000), the last consecutive 100 mTHA before rTHA introduction (year 2011), and the first consecutive 100 rTHA (year 2012)...
May 24, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28537348/a-cadaver-study-to-evaluate-the-accuracy-of-a-new-3d-mini-optical-navigation-tool-for-total-hip-arthroplasty
#2
Jonathan M Vigdorchik, Michael B Cross, Eric A Bogner, Theodore T Miller, Jeffrey M Muir, Ran Schwarzkopf
BACKGROUND: Accurate measurement of acetabular cup position (CP), changes in leg length (LL), and offset (OS) are paramount in ensuring proper sizing and implantation of components during total hip arthroplasty (THA). LL/OS inaccuracies can cause low back pain, neurological deficits, and patient dissatisfaction, while inaccurate positioning of the acetabular cup can lead to instability, dislocation, and, ultimately, revision surgery. The objective of this study was to evaluate the accuracy of a mini-navigation tool in measuring CP and LL/OS differential during THA...
May 24, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28527701/reasons-for-and-functional-results-of-repeated-hip-arthroscopy-a-continuous-prospective-study-of-17-revisions-out-of-295-primary-hip-arthroscopies-at-mean-28-months-follow-up
#3
C Tissot, L Merlini, M Mercier, N Bonin
INTRODUCTION: The rate of iterative arthroscopy has been increasing over the last decade as the technique has grown. The results of and reasons for these revision procedures, however, are not exactly known. We therefore conducted a prospective study to shed light on 1) functional results and patient satisfaction following repeated arthroscopy, and 2) the relevant indications. HYPOTHESIS: Functional scores and patient satisfaction increase following repeated arthroscopy...
May 17, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28509828/modular-fluted-tapered-stems-in-aseptic-revision-total-hip-arthroplasty
#4
Matthew P Abdel, Umberto Cottino, Dirk R Larson, Arlen D Hanssen, David G Lewallen, Daniel J Berry
BACKGROUND: Modular fluted tapered stems have become the most commonly employed category of femoral component in revision hip arthroplasty in North America as a result of favorable early results and simplicity of use. Despite wide adoption, the majority of published data are limited to relatively small series with modest follow-up. The goal of the current study was to determine the success rate and factors associated with success, failure, and complications of the use of modular fluted tapered stems in aseptic revision total hip arthroplasties (THAs) in a large patient cohort...
May 17, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28506617/arthroscopic-treatment-of-hip-pain-in-adolescent-patients-with-borderline-dysplasia-of-the-hip-minimum-2-year-follow-up
#5
Peter T Evans, John M Redmond, Jon E Hammarstedt, Yuan Liu, Edwin O Chaharbakhshi, Benjamin G Domb
PURPOSE: To examine arthroscopic treatment of hip pain in patients with borderline hip dysplasia (lateral center edge angle [LCEA] between 20° and 25°). METHODS: From 2008 to 2013, patients below 18 years of age who underwent arthroscopic hip surgery with an LCEA between 20° and 25° were retrospectively matched 1:1 to a control group without dysplasia (LCEA ≥25°) based on age, gender, femoroplasty, labral treatment, and capsular plication. Indications for surgery included failure to improve with nonoperative treatments and anti-inflammatory medications after 3 months...
May 12, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28501788/dynamic-femoral-head-translations-in-dysplastic-hips
#6
Tatsuya Sato, Hiromasa Tanino, Yasuhiro Nishida, Hiroshi Ito, Takeo Matsuno, Scott A Banks
BACKGROUND: Developmental dysplasia of the hip is an important disease leading to osteoarthritis. Recently, researchers have focused on hip instability as a potentially important dynamic factor for osteoarthritis, but the detailed kinematics of dysplastic hips during weight-bearing gait have not been reported. The purpose of this research is to contrast femoral translation in contralateral healthy hips and dysplastic hips during weight-bearing stepping. METHODS: Twelve dysplastic hips and eight healthy hips were investigated...
May 5, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28466104/imaging-evaluation-of-the-hip-after-arthroscopic-surgery-for-femoroacetabular-impingement
#7
REVIEW
Julia Crim
Arthroscopic surgery for femoroacetabular impingement (FAI) is increasingly frequently performed. Initial reports were that complications were very low, but as experience has increased, a number of long-term complications, in addition to factors related to poor clinical outcomes, have been identified. This review describes the normal and abnormal postoperative imaging appearance of the hip after arthroscopy for FAI. Abnormalities discussed include incomplete resection or over-resection of the impingement lesion, heterotopic ossification, cartilage damage, chondrolysis, instability and dislocation, recurrent labral tear, adhesions, psoas atrophy, infection, and avascular necrosis...
May 2, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28456559/midterm-outcomes-of-revision-total-hip-arthroplasty-with-the-use-of-a-multihole-highly-porous-titanium-shell
#8
Ronald E Delanois, Chukwuweike U Gwam, Nequesha Mohamed, Anton Khlopas, Morad Chughtai, Arthur L Malkani, Michael A Mont
BACKGROUND: We are reporting on the minimum 5-year outcomes of patients who underwent revision total hip arthroplasty (THA) using a specific highly-porous titanium shell. We assessed (1) aseptic and all-cause survivorship; (2) functional outcomes; (3) complications; and (4) radiographic outcomes. METHODS: Two hospital databases were evaluated for patients who underwent revision THA due to component instability or aseptic loosening using a cementless highly-porous titanium shell between September 2006 and December 2011...
April 6, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28451863/variations-in-knee-kinematics-after-acl-injury-and-after-reconstruction-are-correlated-with-bone-shape-differences
#9
Drew A Lansdown, Valentina Pedoia, Musa Zaid, Keiko Amano, Richard B Souza, Xiaojuan Li, C Benjamin Ma
BACKGROUND: The factors that contribute to the abnormal knee kinematics after anterior cruciate ligament (ACL) injury and ACL reconstruction remain unclear. Bone shape has been implicated in the development of hip and knee osteoarthritis, although there is little knowledge about the effects of bone shape on knee kinematics after ACL injury and after ACL reconstruction. QUESTIONS/QUESTIONS: (1) What is the relationship between bony morphology with alterations in knee kinematics after ACL injury? (2) Are baseline bone shape features related to abnormal knee kinematics at 12 months after ACL reconstruction? METHODS: Thirty-eight patients (29 ± 8 years, 21 men) were prospectively followed after acute ACL injury and before ligamentous reconstruction...
April 27, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28448711/-cemented-polyethylene-insert-in-a-well-fixed-total-knee-replacement-case-report
#10
F E García-Dobarganes Barlow, J Negrete-Corona, A A Díaz-Tovar
We present the case of a 94 years- old patient, which was operated 14 years ago of a right total knee replacement for osteoarthritis, actually she suffers of pain and instability; her X ray shown polyethylene wear without loosening of the metal components. The polyethylene insert is not manufactured anymore so we decided cement a new polyethylene insert on the native tibial baseplate. The two years follow up show us a patient asymptomatic, good function and no radiolucencies on the tibial component. We only found a similar case report in Madrid and we believed that this decision, taken from total hip revisions, will succeed...
September 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/28437490/the-diagnosis-and-initial-treatment-of-patellofemoral-disorders
#11
Alan C Merchant, John P Fulkerson, Wayne Leadbetter
Our purpose is to provide simple guidelines for the diagnosis and early care of patellofemoral disorders. Any clinician who treats knee problems, including family practitioners, rheumatologists, orthopedic surgeons, or physical therapists, must know how to make the correct diagnosis, or at least a presumptive diagnosis, at the initial visit. This can avoid unneeded and costly tests, ineffective treatment, and even damaging exercises and unnecessary surgery. The diagnosis of patellofemoral disorders is confusing because they can have many causes...
March 2017: American Journal of Orthopedics
https://www.readbyqxmd.com/read/28435565/lumbosacral-plexopathy-in-pelvic-injury-a-cause-of-hip-instability-in-acetabular-fractures-a-report-of-two-cases
#12
N Kumar, M Q Wayne-Yap, Kwek Ebk
Lumbosacral plexopathy is a rare clinical entity that results in potentially severe neurological deficit. The clinical presentation of lumbosacral plexopathy includes motor and sensory deficits. However to the best of our knowledge, hip instability secondary to lumbosacral plexopathy has not been reported in current literature. We report two cases of pelvic injury in which recurrent hip subluxation occurred following fixation of acetabular fractures. We attribute this to inadequate hip muscle tension from the associated lumbosacral plexopathy...
July 2016: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/28425031/the-cytokine-expression-in-synovial-membrane-and-the-relationship-with-pain-and-pathological-findings-at-hip-arthroscopy
#13
Kensuke Fukushima, Gen Inoue, Hisako Fujimaki, Kentaro Uchida, Masayuki Miyagi, Naoshige Nagura, Katsufumi Uchiyama, Naonobu Takahira, Masashi Takaso
BACKGROUND: Synovial membrane inflammation is the most common finding presenting during hip arthroscopy, and may play a role in hip pain. We sought to determine the relationships between synovial cytokine levels, hip pain, and arthroscopic findings of the hip joint. METHODS: We prospectively included 33 patients who underwent arthroscopic hip surgery (34 hips). For all patients, radiographs and severity of pain were evaluated preoperatively. During arthroscopy, we classified the chondral injury and synovitis, noted the incidence of labral tear and its instability, and a sample of the synovial membrane was harvested for quantitative PCR to determine levels of TNFα, IL1β, IL6, ADAMTS4, MMP1, and MMP3...
December 2017: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/28413142/outcomes-of-modular-dual-mobility-acetabular-components-in-revision-total-hip-arthroplasty
#14
E Grant Sutter, Taylor R McClellan, David E Attarian, Michael P Bolognesi, Paul F Lachiewicz, Samuel S Wellman
BACKGROUND: There is a high rate of dislocation after revision total hip arthroplasty. This study evaluated the outcomes of 1 modular dual mobility component in revision total hip arthroplasty in patients at high risk of dislocation. METHODS: We reviewed 64 revisions performed in 27 (42%) patients for recurrent dislocation, 16 (25%) for adverse local tissue reaction, 11 (17%) for reimplantation infection, and 10 (16%) for aseptic loosening, malposition, or fracture...
March 23, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28389135/a-contemporary-definition-of-hip-dysplasia-and-structural-instability-toward-a-comprehensive-classification-for-acetabular-dysplasia
#15
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/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
#16
MULTICENTER STUDY
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/28385345/outcome-following-debridement-antibiotics-and-implant-retention-in-hip-periprosthetic-joint-infection-an-18-year-experience
#17
George Grammatopoulos, Benjamin Kendrick, Martin McNally, Nicholas A Athanasou, Bridget Atkins, Peter McLardy-Smith, Adrian Taylor, Roger Gundle
BACKGROUND: Debridement-antibiotics-and-implant-retention (DAIR) may be considered a suitable surgical option in periprosthetic joint infections (PJIs) with soundly fixed prostheses, despite chronicity. This study aims to define the long-term outcome following DAIR in hip PJI. METHODS: We reviewed all hip DAIRs performed between 1997 and 2013 (n = 122) to define long-term outcome and identify factors influencing it. Data recorded included patient demographics, medical history, type of DAIR performed (+/- exchange of modular components), and organisms identified...
March 6, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28385170/danish-survey-of-acetabular-component-positioning-practice-during-primary-total-hip-arthroplasty
#18
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/28384949/comparative-study-of-surgical-management-of-fracture-neck-of-femur-with-cemented-versus-uncemented-bipolar-hemiarthroplasty
#19
Y S Prashanth, M Niranjan
INTRODUCTION: There is evidence for use of cemented hemiarthroplasty resulting in greater anchoring and lesser peri prosthetic fracture. However, this procedure results in more haemodynamic instability and cardiopulmonary complications termed as 'cement reaction' or bone cement implantation syndrome. There has been a heightened interest among surgeons to compare cemented and uncemented hemiarthroplasty for fracture neck of femur. AIM: To compare cemented and uncemented hemiarthroplasty in terms of blood loss during the procedure, post-operative complications, mortality, functional recovery and long term clinical outcome...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28378001/adverse-reaction-to-metal-debris-with-concomitant-incidental-crystalline-arthropathy-in-hip-arthroplasty
#20
Edward J Testa, Brian J McGrory
Adverse reaction to metal debris (ARMD) is a known cause of failed metal in hip arthroplasty. Diagnosis of this type of prosthesis failure may be difficult, and the hallmark is an abnormally elevated serum cobalt level. Concomitant diagnoses may also be present, such as infection, instability, and loosening, and this may confuse interpretation of abnormal laboratories. We present here, for the first time, 2 patients with ARMD and crystalline arthropathy. In each case, the patient chose surgery for ARMD, with resolution of symptoms and no recurrence of the crystalline arthropathy...
March 2017: Arthroplasty Today
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