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Avascular necrosis

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https://www.readbyqxmd.com/read/28641972/equal-primary-fixation-of-resurfacing-stem-but-inferior-cup-fixation%C3%A2-with-anterolateral-vs-posterior-surgical-approach-a-2-year-blinded-randomized-radiostereometric-and-dual-energy-x-ray-absorptiometry-study-of-metal-on-metal-hip-resurfacing-arthroplasty
#1
Mette H Hjorth, Nina D Lorenzen, Kjeld Søballe, Stig S Jakobsen, Maiken Stilling
BACKGROUND: The anterolateral (AntLat) surgical approach may spare the blood supply to the femoral head and improve the accuracy of cup positioning in metal-on-metal hip resurfacing arthroplasty. Thereby, potentially lessen complications such as avascular head necrosis, femoral neck narrowing and fracture, improve implant fixation, and lessen periprosthetic bone mineral density (BMD) loss. METHODS: Between November 2008 and January 2012, a randomized clinical trial was performed at Aarhus University Hospital...
May 25, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28638499/avascular-necrosis-of-the-capitate
#2
David Buziashvili, Richard S Zeri, Tom Reisler
No abstract text is available yet for this article.
2017: Eplasty
https://www.readbyqxmd.com/read/28633801/total-talar-prosthesis-replacement-after-talar-extrusion
#3
Sébastien Ruatti, Clémentine Corbet, Mehdi Boudissa, Gael Kerschbaumer, Michel Milaire, Philippe Merloz, Jérôme Tonetti
Dislocation of the talus is a serious and extremely rare injury, with 86 cases reported in the published data in 20 years. The reference standard for case management involves replacement of the dislocated talus to restore the height and function of the tibiotalar joint. The risk of avascular necrosis remains very high, and the standard treatment in such cases is tibiotalar arthrodesis. We report the case of total dislocation of the talus, which was treated with the insertion of a custom total talar prosthesis affixed directly to the tibial cartilage at 6 months after injury...
July 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28633784/complications-of-talar-neck-fractures-by-hawkins-classification-a%C3%A2-systematic-review
#4
REVIEW
Richard K Jordan, Kunaal R Bafna, Jiayong Liu, Nabil A Ebraheim
The goal of the present study was to perform a systematic review of the published data on talar neck fractures for a better understanding of the postoperative clinical outcomes using open reduction and internal fixation stratified by Hawkins type. A PubMed search was performed using the keywords "talar," "neck," and "fracture." This search identified 209 potential studies, which were reviewed to yield 16 studies that met the criteria. The surgical outcomes of talar neck fractures stratified by the Hawkins classification analyzed in the present study were as follows: American Orthopaedic Foot and Ankle Society scale score was 77...
July 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28629558/is-there-a-trend-in-ct-scanning-scaphoid-nonunions-for-deformity-assessment-a-systematic-review
#5
REVIEW
Paul W L Ten Berg, Marieke G A de Roo, Mario Maas, Simon D Strackee
PURPOSE: The effect of scaphoid nonunion deformity on wrist function is uncertain due to the lack of reliable imaging tools. Advanced three-dimensional (3-D) computed tomography (CT)-based imaging techniques may improve deformity assessment by using a mirrored image of the contralateral intact wrist as anatomic reference. The implementation of such techniques depends on the extent to which conventional CT is currently used in standard practice. The purpose of this systematic review of medical literature was to analyze the trend in CT scanning scaphoid nonunions, either unilaterally or bilaterally...
June 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28629385/administrative-algorithms-to-identify-avascular-necrosis-of-bone-among-patients-undergoing-upper-or-lower-extremity-magnetic-resonance-imaging-a-validation-study
#6
Medha Barbhaiya, Yan Dong, Jeffrey A Sparks, Elena Losina, Karen H Costenbader, Jeffrey N Katz
BACKGROUND: Studies of the epidemiology and outcomes of avascular necrosis (AVN) require accurate case-finding methods. The aim of this study was to evaluate performance characteristics of a claims-based algorithm designed to identify AVN cases in administrative data. METHODS: Using a centralized patient registry from a US academic medical center, we identified all adults aged ≥18 years who underwent magnetic resonance imaging (MRI) of an upper/lower extremity joint during the 1...
June 19, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28626591/a-case-of-trapezium-avascular-necrosis-treated-conservatively
#7
Evangelos Petsatodis, Konstantinos Ditsios, Panagiotis Konstantinou, Iosafat Pinto, Lazaros Kostretzis, Ioannis Theodoroudis, Mayia Pilavaki
INTRODUCTION: Avascular necrosis (AVN) of the bones of the wrist most commonly involves the lunate followed by the proximal pole of the scaphoid and the capitate. Trapezium avascular necrosis is extremely rare with only two cases reported in the literature, both of which were treated surgically. In this article, we report a unique case of trapezium avascular necrosis treated conservatively. CASE PRESENTATION: A 38-year-old man complaining of a 4-month history of mild pain on the base of his right thumb...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28623409/evaluation-of-bone-viability-in-patients-after-girdlestone-arthroplasty-comparison-of-bone-spect-ct-and-mri
#8
G Diederichs, P Hoppe, F Collettini, G Wassilew, B Hamm, W Brenner, M R Makowski
PURPOSE: To test the diagnostic performance of bone SPECT/CT and MRI for the evaluation of bone viability in patients after girdlestone-arthroplasty with histopathology used as gold standard. MATERIALS AND METHODS: In this cross-sectional study, patients after girdlestone-arthroplasty were imaged with single-photon-emission-computed-tomography/computed-tomography (SPECT/CT) bone-scans using 99mTc-DPD. Additionally, 1.5 T MRI was performed with turbo-inversion-recovery-magnitude (TIRM), contrast-enhanced T1-fat sat (FS) and T1-mapping...
June 16, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28619441/radiologic-guide-to-surgical-treatment-of-kienbock-s-disease
#9
REVIEW
Erika M Nealey, Jonelle M Petscavage-Thomas, Felix S Chew, Christopher H Allan, Alice S Ha
Kienbock's disease, or avascular necrosis of the lunate, is a progressive disease ultimately resulting in end-stage arthrosis of the wrist. Various surgical treatments are available for different Lichtman stages of disease. We review the surgical options and indications, expected radiologic post-operative appearance, as well as detail potential surgical complications, as they relate to Kienbock's disease.
April 25, 2017: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/28609644/outcomes-of-hip-arthroscopic-surgery-in-patients-with-t%C3%A3-nnis-grade-1-osteoarthritis-at-a-minimum-5-year-follow-up-a-matched-pair-comparison-with-a-t%C3%A3-nnis-grade-0-control-group
#10
Benjamin G Domb, Edwin O Chaharbakhshi, Danil Rybalko, Mary R Close, Jody Litrenta, Itay Perets
BACKGROUND: Studies on midterm outcomes of the arthroscopic treatment of femoroacetabular impingement (FAI) and labral tears with mild osteoarthritis (OA) are limited. PURPOSE: To evaluate outcomes of the arthroscopic treatment of FAI and labral tears in patients with mild preoperative OA (Tönnis grade 1) at a minimum 5-year follow-up, and to perform a matched-pair comparison to a control group with Tönnis grade 0. STUDY DESIGN: Cohort study; Level of evidence, 3...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28606024/effects-of-the-acetabular-fracture-index-and-other-factors-of-posterior-wall-acetabular-fracture-on-functional-outcome
#11
Hai-Tao Long, Zhen-Han Deng, Min Zou, Zhang-Yuan Lin, Jian-Xi Zhu, Yong Zhu
Objective To analyze the effects of the acetabular fracture index (AFI) and other factors on the functional outcome of patients with acetabular fractures involving the posterior wall. Methods Forty-eight patients who underwent surgery in our department were reviewed. According to the AFI, which indicates the percentage of remaining intact posterior acetabular arc, the patients were divided into Group A (AFI ≤ 25%, 11 patients), Group B (25% < AFI ≤ 50%, 23 patients), Group C (50% < AFI ≤ 75%, 7 patients), and Group D (75% < AFI ≤ 100%, 7 patients)...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28604551/the-periosteal-medial-femoral-condyle-free-flap-a-new-option-for-soft-tissue-reconstruction-of-the-distal-lower-extremity
#12
Noah H Saad, Matthew E Pontell, Brian S Winters, Joseph Daniel, Adam Saad
BACKGROUND: Small (<30 cm) soft tissue defects of the distal leg, foot, and ankle pose a complicated issue with regard to wound healing. Multiple flaps have been proposed for reconstruction of these wounds with varying levels of success. The medial femoral condyle flap is a free bone flap supplied by the descending geniculate artery. It is currently used in the treatment of fracture nonunion, infected bone defects, avascular necrosis, and osteoradionecrosis. This study proposes the use of the periosteal portion of the medial femoral condyle (PMFC) flap for soft tissue reconstruction of the distal leg, foot, and ankle...
June 9, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28601953/fludarabine-inhibits-stat1-mediated-up-regulation-of-caspase-3-expression-in-dexamethasone-induced-osteoblasts-apoptosis-and-slows-the-progression-of-steroid-induced-avascular-necrosis-of-the-femoral-head-in-rats
#13
Zhenhua Feng, Wenhao Zheng, Qian Tang, Liang Cheng, Hang Li, Wenfei Ni, Xiaoyun Pan
Steroid-induced avascular necrosis of the femoral head (SANFH) is a major limitation of long-term or excessive clinical administration of glucocorticoids. Fludarabine, which is a compound used to treat various hematological malignancies, such as chronic lymphocytic leukemia, acts by down-regulating signal transducer and activator of transcription 1 (STAT1) by inhibiting STAT1 phosphorylation in both normal and cancer cells. This study assessed the effects of fludarabine in vitro (primary murine osteoblasts) and in vivo (rat SANFH model)...
June 10, 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/28592354/post-wall-fixation-by-lag-screw-only-in-associated-both-column-fractures-with-posterior-wall-involvement
#14
Hu Wang, Kandemir Utku, Yan Zhuang, Kun Zhang, Ya-Hui Fu, Xing Wei, Peng-Fei Wang, Yu-Xuan Cong, Jin-Lai Lei, Bin-Fei Zhang
PURPOSE: To evaluate the quality of reduction, clinical outcomes and complications of associated both column acetabular fractures with posterior wall involvement that are treated through single ilioinguinal approach and fixation of posterior wall by lag screws only. METHODS: We conducted a retrospective review involving ninety-nine consecutive patients with associated both column fractures of acetabulum treated through single ilioinguinal approach. Patients were divided into two groups...
May 30, 2017: Injury
https://www.readbyqxmd.com/read/28589334/are-there-differences-in-gait-mechanics-in-patients-with-a-fixed-versus-mobile-bearing-total-ankle-arthroplasty-a-randomized-trial
#15
Robin M Queen, Christopher T Franck, Daniel Schmitt, Samuel B Adams
BACKGROUND: Total ankle arthroplasty (TAA) is an alternative to arthrodesis, but no randomized trial has examined whether a fixed bearing or mobile bearing implant provides improved gait mechanics. QUESTIONS/PURPOSES: We wished to determine if fixed- or mobile-bearing TAA results in a larger improvement in pain scores and gait mechanics from before surgery to 1 year after surgery, and to quantify differences in outcomes using statistical analysis and report the standardized effect sizes for such comparisons...
June 6, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28588152/treatment-of-transverse-with-or-without-posterior-wall-fractures-of-acetabulum-using-a-modified-smith-petersen-combined-with-kocher-langenbeck-approach
#16
Tu Hu, Haitao Xu, Chaolai Jiang, Geliang Ren, Zhiquan An
BACKGROUND The aim of this study was to explore the surgical treatment of transverse with or without posterior wall fractures of the acetabulum. MATERIAL AND METHODS We surgically treated 21 consecutive cases of pure transverse (7 cases) and with posterior wall (14 cases) fractures of the acetabulum. The anterior column fractures were firstly reduced, temporarily fixed through a modified Smith-Petersen small incision, and finally fixed after the fixation of the posterior column and wall fractures, which were reduced and fixed through a Kocher-Langenbeck approach...
June 7, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28587485/management-of-nonunited-talar-fractures-with-avascular-necrosis-by-resection-of-necrotic-bone-bone-grafting-and-fusion-with-an-intramedullary-nail
#17
Mohamed Mokhtar Abd-Ella, Ahmed Galhoum, Amr Farouk Abdelrahman, Markus Walther
BACKGROUND: The presence of nonunion of a talar fracture with displacement, together with complete avascular necrosis, is a challenging entity to treat. METHODS: Twelve patients, 8 men (66.7%) and 4 women (33.3%), with nonunited talar fractures and extensive avascular necrosis of the talus were included. The average age was 27.7 years (range, 19-38 years). After exclusion of infection, the patients underwent resection of necrotic bone, bulk autograft, and fusion using an intramedullary nail...
June 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28584206/long-term-outcome-of-multiple-small-diameter-drilling-decompression-combined-with-hip-arthroscopy-versus-drilling-alone-for-early-avascular-necrosis-of-the-femoral-head
#18
Ji Li, Zhong-Li Li, Hao Zhang, Xiang-Zheng Su, Ke-Tao Wang, Yi-Meng Yang
BACKGROUND: Avascular necrosis of femoral head (AVNFH) typically presents in the young adults and progresses quickly without proper treatments. However, the optimum treatments for early stage of AVNFH are still controversial. This study was conducted to evaluate the therapeutic effects of multiple small-diameter drilling decompression combined with hip arthroscopy for early AVNFH compared to drilling alone. METHODS: This is a nonrandomized retrospective case series study...
June 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28583419/modified-dynamic-hip-screw-loaded-with-autologous-bone-graft-for-treating-pauwels-type-3-vertical-femoral-neck-fractures
#19
Deqing Luo, Weitao Zou, Yijiao He, Hang Xian, Lei Wang, Jiazuo Shen, Kejian Lian, Dasheng Lin
INTRODUCTION: Management of Pauwels type-3 vertical femoral neck fractures has been a challenging clinical problem as they experience high shear forces and thus a greater risk of treatment failure. There is no apparent consensus on the optimal implant type for these injuries. We developed a modified dynamic hip screw (DHS), which was designed to a cage in the lag screw, loaded with autologous bone graft for the treatment of Pauwels type-3 vertical femoral neck fractures. METHODS: Between February 2010 and January 2012, 17 consecutive patients with Pauwels type-3 vertical femoral neck fractures were treated with the modified DHS loaded with autologous bone graft...
May 26, 2017: Injury
https://www.readbyqxmd.com/read/28578800/geometric-analysis-of-the-talus-and-development-of-a-generic-talar-prosthetic
#20
Alexandra Trovato, Marwan El-Rich, Samer Adeeb, Suki Dhillon, Nadr Jomha
BACKGROUND: Trauma to the talus can result in fracture, avascular necrosis and structural collapse. Treatment has been limited to surgical fusion and total ankle arthroplasty. Total ankle arthroplasty may not be an appropriate treatment for avascular necrosis while surgical fusion of the joint limits mobility. Custom-made implants have recently been used to address these limitations but have lengthy delays between injury and surgery and higher associated costs. A generic talar prosthesis available in various sizes may serve as a suitable alternative...
June 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
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