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https://www.readbyqxmd.com/read/28186873/pre-operative-simulation-of-periacetabular-osteotomy-via-a-three-dimensional-model-constructed-from-salt
#1
Kensuke Fukushima, Naonobu Takahira, Katsufumi Uchiyama, Mitsutoshi Moriya, Masashi Takaso
INTRODUCTION: Periacetabular osteotomy (PAO) is an effective joint-preserving procedure for young adults with developmental dysplasia of the hip. Although PAO provides excellent radiographic and clinical results, it is a technically demanding procedure with a distinct learning curve that requires careful 3D planning and, above all, has a number of potential complications. We therefore developed a pre-operative simulation method for PAO via creation of a new full-scale model. METHODS: The model was prepared from the patient's Digital Imaging and Communications in Medicine (DICOM) formatted data from computed tomography (CT), for construction and assembly using 3D printing technology...
2017: SICOT-J
https://www.readbyqxmd.com/read/28165604/the-association-between-gender-and-familial-prevalence-of-hip-dysplasia-in-danish-patients
#2
Rima El Jashi, Maria B Gustafson, Mette B Jakobsen, Charlotte Lautrup, Jens M Hertz, Kjeld Søballe, Inger Mechlenburg
BACKGROUND: The development of hip dysplasia is associated with several risk factors. 1 of these risk factors is gender, since 80% of patients with symptomatic hip dysplasia are females. Another risk factor for hip dysplasia is familial predisposition of hip dysplasia. Several studies indicate that the risk of hip dysplasia is increased with familial prevalence of hip dysplasia. However, little is known about the association between the familial prevalence and gender and the development of hip dysplasia...
February 3, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28145959/early-results-of-acetabular-reconstruction-after-wide-periacetabular-oncologic-resection
#3
Matthew P Abdel, Philipp von Roth, Kevin I Perry, Peter S Rose, David G Lewallen, Franklin H Sim
BACKGROUND: Reliable acetabular fixation in total hip arthroplasty following periacetabular resections is challenging. Tantalum components have been successfully implemented for difficult revision arthroplasties, but, to our knowledge, have not been reported for acetabular reconstruction following oncologic periacetabular resection. The primary purpose of the current study was to determine the early clinical outcomes, complications, and radiographic findings for acetabular reconstruction after oncologic periacetabular resection...
February 1, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28098707/descriptive-epidemiology-of-acetabular-dysplasia-the-academic-network-of-conservational-hip-outcomes-research-anchor-periacetabular-osteotomy
#4
Wudbhav N Sankar, Stephen T Duncan, Geneva R Baca, Paul E Beaulé, Michael B Millis, Young-Jo Kim, Christopher L Peters, David A Podeszwa, Perry L Schoenecker, Rafael J Sierra, Ernest L Sink, Daniel J Sucato, Robert T Trousdale, Ira Zaltz, John C Clohisy
BACKGROUND: Periacetabular osteotomy (PAO) is an established treatment for symptomatic acetabular dysplasia, which is a well-recognized cause of hip pain, functional limitations, and secondary osteoarthritis. The purpose of this study was to describe the demographics of patients undergoing PAO, the baseline patient-reported outcome measures for this population, and the types of adjunctive procedures performed at the time of PAO surgery. METHODS: Demographics, disease characteristics, and patient-reported functional measures were prospectively collected from all patients who underwent PAO performed by 12 surgeons from 2008 to 2013...
February 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/28078371/acetabular-defect-classification-in-times-of-3d-imaging-and-patient-specific-treatment-protocols
#5
K Horas, J Arnholdt, A F Steinert, M Hoberg, M Rudert, B M Holzapfel
Parallel to the rising number of revision hip procedures, an increasing number of complex periprosthetic osseous defects can be expected. Stable long-term fixation of the revision implant remains the ultimate goal of the surgical protocol. Within this context, an elaborate preoperative planning process including anticipation of the periacetabular defect form and size and analysis of the remaining supporting osseous elements are essential. However, detection and evaluation of periacetabular bone defects using an unsystematic analysis of plain anteroposterior radiographs of the pelvis is in many cases difficult...
February 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28078360/multimodal-nerve-monitoring-during-periacetabular-osteotomy-identifies-surgical-steps-associated-with-risk-of-injury
#6
Eduardo N Novais, Travis Heare, Lauryn Kestel, Patricia Oliver, Willy Boucharel, Jason Koerner, Kim Strupp
PURPOSE: Sciatic nerve palsy after periacetabular osteotomy (PAO) is a serious complication. The purpose of this study was to determine whether a multimodal sciatic monitoring technique allows for identification of surgical steps that place the sciatic nerve at risk. METHODS: Transcranial electrical motor evoked potentials (TcMEPs), somatosensory evoked potentials (SSEPs), and spontaneous electromyography (EMG) were monitored in a consecutive series of 34 patients (40 hips) who underwent PAO for the treatment of symptomatic hip dysplasia between January 2012 and November 2014...
January 11, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28074234/-biological-downsizing-acetabular-defect-reconstruction-in-revision-total-hip-arthroplasty
#7
S Koob, S Scheidt, T M Randau, M Gathen, M D Wimmer, D C Wirtz, S Gravius
BACKGROUND: Periacetabular bony defects remain a great challenge in revision total hip arthroplasty. After assessment and classification of the defect and selection of a suitable implant the primary stable fixation and sufficient biological reconstitution of a sustainable bone stock are essential for long term success in acetabular revision surgery. Biological defect reconstruction aims for the down-sizing of periacetabular defects for later revision surgeries. TECHNIQUE: In the field of biological augmentation several methods are currently available...
February 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28069064/pasteurized-autograft-reconstruction-after-resection-of-periacetabular-malignant-bone-tumours
#8
Xiaoning Guo, Xiaoyang Li, Tang Liu, Cijun Shuai, Qing Zhang
BACKGROUND: The treatment of periacetabular malignant bone tumours is challenging. Many methods of reconstruction after internal hemipelvectomy have been reported and each method has its own limitations. The aim of this study was to evaluate the oncological and functional outcomes of pasteurized autograft reconstruction after resection of periacetabular malignant bone tumours. METHODS: Ten patients (six male, four female) with periacetabular malignant tumours, who underwent resection and reconstruction with pasteurized autograft, were retrospectively reviewed...
January 9, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28060231/patient-reported-outcomes-of-periacetabular-osteotomy-from-the-prospective-anchor-cohort-study
#9
John C Clohisy, Jeffrey Ackerman, Geneva Baca, Jack Baty, Paul E Beaulé, Young-Jo Kim, Michael B Millis, David A Podeszwa, Perry L Schoenecker, Rafael J Sierra, Ernest L Sink, Daniel J Sucato, Robert T Trousdale, Ira Zaltz
BACKGROUND: Current literature describing the periacetabular osteotomy (PAO) is mostly limited to retrospective case series. Larger, prospective cohort studies are needed to provide better clinical evidence regarding this procedure. The goals of the current study were to (1) report minimum 2-year patient-reported outcomes (pain, hip function, activity, overall health, and quality of life), (2) investigate preoperative clinical and disease characteristics as predictors of clinical outcomes, and (3) report the rate of early failures and reoperations in patients undergoing contemporary PAO surgery...
January 4, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28053388/prevalence-of-deep-vein-thrombosis-in-patients-with-lower-limb-trauma
#10
Chirag S Kapoor, Ashit K Mehta, Krunal Patel, Paresh P Golwala
INTRODUCTION: Venous thrombo-embolism (VTE), which consists of deep vein thrombosis (DVT) and pulmonary embolism, is a potentially fatal condition. According to Western literature, DVT of lower limb veins is one of the most common complications following surgeries for lower limb. Few studies have been published from India on the subject and little is known about the true prevalence of the DVT and hence there are no clear guidelines regarding the prophylaxis for DVT for Indian patients...
October 2016: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28053253/minimally-invasive-periacetabular-osteotomy-using-a-modified-smith-petersen-approach-technique-and-early-outcomes
#11
O H Khan, A Malviya, P Subramanian, D Agolley, J D Witt
AIMS: Periacetabular osteotomy is an effective way of treating symptomatic hip dysplasia. We describe a new minimally invasive technique using a modification of the Smith-Peterson approach. We performed a prospective, longitudinal cohort study to assess for any compromise in acetabular correction when using this approach, and to see if the procedure would have a higher complication rate than that quoted in the literature for other approaches. We also assessed for any improvement in functional outcome...
January 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28017958/theoretical-implications-of-periacetabular-osteotomy-in-various-dysplastic-acetabular-cartilage-defects-as-determined-by-finite-element-analysis
#12
Meng Xu, Wenrui Qu, Yanbing Wang, Lei Zhong, Zhe Zhu, Wei Li, Xin Zhao, Jincheng Wang, Yu Sun
BACKGROUND Different extents and locations of acetabular cartilage defect have been supposed to be a major cause of undesirable outcomes of periacetabular osteotomy (PAO) in patients with developmental dysplasia of the hip (DDH). This study aimed to verify whether different locations of cartilage deficiency affect the biomechanical environment in a three-dimensional model utilizing finite element analysis (FEA). MATERIAL AND METHODS We developed 3 DDH models - DDH-1 (normal shape), DDH-2 (superior defect), and DDH-3 (anterosuperior defect) - by deforming from a normal hip model...
December 26, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28012061/-treatment-of-acetabular-bone-defects-in-revision-hip-arthroplasty-using-the-revisio-system
#13
M Hoberg, B M Holzapfel, A F Steinert, F Kratzer, M Walcher, M Rudert
BACKGROUND: Many different systems for the management of primary and secondary acetabular defects are available, each with its inherent advantages and disadvantages. The Revisio-System is a press-fit oval mono-block implant that makes a defect-oriented reconstruction and restoration of the center of rotation possible. MATERIAL AND METHODS: In this study, we retrospectively reviewed the outcome of 92 consecutive patients treated with this oval press-fit cup due to periacetabular bone loss...
February 2017: Der Orthopäde
https://www.readbyqxmd.com/read/27998657/the-relationship-between-polyethylene-wear-and-periprosthetic-osteolysis-in-total-hip-arthroplasty-at-12-years-in-a-randomized-controlled-trial-cohort
#14
John A J Broomfield, Tamer T Malak, Geraint E R Thomas, Antony J R Palmer, Adrian Taylor, Sion Glyn-Jones
BACKGROUND: Polyethylene acetabular components are common in hip arthroplasty. Highly cross-linked polyethylene (HXLPE) has lower wear than ultra-high molecular weight polyethylene (UHMWPE). Evidence suggests that wear particles induce inflammation causing periprosthetic osteolysis contributing to implant loosening with wear rates of 0.05 mm/y were considered safe. We aimed to compare incidence and volume of periacetabular osteolysis between HXLPE and UHMWPE using computed tomography...
November 8, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27995561/corr-insights-%C3%A2-periacetabular-osteotomy-provides-higher-survivorship-than-rim-trimming-for-acetabular-retroversion
#15
Rafael J Sierra
No abstract text is available yet for this article.
December 19, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27984686/-surgical-treatment-of-malignant-primary-tumors-of-the-pelvis-on-ennekings-zone-ii
#16
A M González-Pérez, C Arvinius, J García-Coiradas, R García-Maroto, J L Cebrian-Parra
INTRODUCTION: Surgical treatment of malignant bone tumors of the pelvis with periacetabular involvement is constantly evolving. Even though acetabular reconstructions improve quality of life without impairing cancer control, they are not complication free. Our purpose is to describe the functional outcomes and surgical complications of different reconstructive techniques for Enneking zone II tumors. MATERIAL AND METHODS: Fifteen patients underwent surgery for malignant pelvic bone tumors between 2002 and 2012...
May 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/27977586/application-of-a-3-dimensional-printed-navigation-template-in-bernese-periacetabular-osteotomies-a-cadaveric-study
#17
You Zhou, Xiaopeng Kang, Chuan Li, Xiaoshan Xu, Rong Li, Jun Wang, Wei Li, Haotian Luo, Sheng Lu
The aim of the present study was to describe the application of 3D printed templates for intraoperative navigation and simulation of periacetabular osteotomies (PAOs) in a cadaveric model.Five cadaveric specimens (10 sides) underwent thin-slice computed tomographic scans of the ala of ilium downwards to the proximal end of femoral shaft. Bernese PAO was performed. Using Mimics v10.1 software (Materialise, Leuven, Belgium), 3D computed tomographic reconstructions were created and the 4 standard PAO bone cuts-ischial, pubic, anterior, and posterior aspects of the ilium-as well as rotation of the dislocated acetabular bone blocks were simulated for each specimen...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27921206/periacetabular-osteotomy-provides-higher-survivorship-than-rim-trimming-for-acetabular-retroversion
#18
Corinne A Zurmühle, Helen Anwander, Christoph E Albers, Markus S Hanke, Simon D Steppacher, Klaus A Siebenrock, Moritz Tannast
BACKGROUND: Acetabular retroversion can cause impaction-type femoroacetabular impingement leading to hip pain and osteoarthritis. It can be treated by anteverting periacetabular osteotomy (PAO) or acetabular rim trimming with refixation of the labrum. There is increasing evidence that acetabular retroversion is a rotational abnormality of the entire hemipelvis and not a focal overgrowth of the anterior acetabular wall, which favors an anteverting PAO. However, it is unknown if this larger procedure would be beneficial in terms of survivorship and Merle d'Aubigné scores in a midterm followup compared with rim trimming...
December 5, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27905061/one-third-of-hips-after-periacetabular-osteotomy-survive-30-years-with-good-clinical-results-no-progression-of-arthritis-or-conversion-to-tha
#19
Till Dominic Lerch, Simon Damian Steppacher, Emanuel Francis Liechti, Moritz Tannast, Klaus Arno Siebenrock
BACKGROUND: Since its first description in 1984, periacetabular osteotomy (PAO) has become an accepted treatment for hip dysplasia. The 30-year survivorship with this procedure has not been reported. Because these patients are often very young at the time of surgery, long-term followup and identification of factors associated with poor outcome could help to improve patient selection. QUESTIONS/PURPOSES: Looking at the initial group of patients with hip dysplasia undergoing PAO at the originator's institution, we asked: (1) What is the cumulative 30-year survival rate free from conversion to THA, radiographic progression of osteoarthritis, and/or a Merle d'Aubigné-Postel score < 15? (2) Did hip function improve and pain decrease? (3) Did radiographic osteoarthritis progress? (4) What are the factors associated with one or more of the three endpoints: THA, radiographic progression of osteoarthritis, and/or Merle d'Aubigné-Postel score < 15? METHODS: We retrospectively evaluated the first 63 patients (75 hips) who underwent PAO for hip dysplasia between 1984 and 1987...
November 30, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27830486/three-patterns-of-acetabular-deficiency-are-common-in-young-adult-patients-with-acetabular-dysplasia
#20
Jeffrey J Nepple, Joel Wells, James R Ross, Asheesh Bedi, Perry L Schoenecker, John C Clohisy
BACKGROUND: Detailed recognition of the three-dimensional (3-D) deformity in acetabular dysplasia is important to help guide correction at the time of reorientation during periacetabular osteotomy (PAO). Common plain radiographic parameters of acetabular dysplasia are limited in their ability to characterize acetabular deficiency precisely. The 3-D characterization of such deficiencies with low-dose CT may allow for more precise characterization. QUESTIONS/PURPOSES: The purposes of this study were (1) to determine the variability in 3-D acetabular deficiency in acetabular dysplasia; (2) to define subtypes of acetabular dysplasia based on 3-D morphology; (3) to determine the correlation of plain radiographic parameters with 3-D morphology; and (4) to determine the association of acetabular dysplasia subtype with patient clinical characteristics including sex, range of motion, and femoral version...
November 9, 2016: Clinical Orthopaedics and related Research
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