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https://www.readbyqxmd.com/read/29149360/-transplantation-of-large-osteochondral-allografts-old-wine-in-new-bottles-or-a-paradigm-shift
#1
EDITORIAL
C Krettek, C Neunaber
No abstract text is available yet for this article.
November 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/29146220/autologous-chondrocyte-implantation-for-talar-osteochondral-lesions-comparison-between-5-year-follow-up-magnetic-resonance-imaging-findings-and-7-year-follow-up-clinical-results
#2
Gherardo Pagliazzi, Francesca Vannini, Milva Battaglia, Laura Ramponi, Roberto Buda
Autologous chondrocyte implantation (ACI) is an established surgical procedure that has provided satisfactory results. The aim of the present study was to correlate the clinical outcomes of a series of 20 patients treated by ACI at a 7-year follow-up examination with the magnetic resonance imaging (MRI) T2-mapping 5-year follow-up findings. We evaluated 20 patients using the American Orthopaedic Foot and Ankle Society (AOFAS) score preoperatively and the established follow-up protocol until 87.2 ± 14.5 months...
November 14, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29144772/subchondral-bone-degradation-after-microfracture-for-osteochondral-lesions-of-the-talus-an-mri-analysis
#3
Yoshiharu Shimozono, Max Coale, Youichi Yasui, Amanda O'Halloran, Timothy W Deyer, John G Kennedy
BACKGROUND: Microfracture is the most common cartilage-reparative procedure for the treatment of osteochondral lesions of the talus (OLTs). Damage to the subchondral bone (SCB) during microfracture may irreversibly change the joint-loading support of the ankle, leading to reparative fibrocartilage degradation over time. PURPOSE: To investigate the morphological change in the SCB after microfracture for OLT by developing a novel magnetic resonance imaging (MRI) scoring system specifically for evaluating the SCB...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29143915/effects-of-aging-on-fracture-healing
#4
REVIEW
Dan Clark, Mary Nakamura, Ted Miclau, Ralph Marcucio
PURPOSE OF REVIEW: This review summarizes research on the physiological changes that occur with aging and the resulting effects on fracture healing. RECENT FINDINGS: Aging affects the inflammatory response during fracture healing through senescence of the immune response and increased systemic pro-inflammatory status. Important cells of the inflammatory response, macrophages, T cells, mesenchymal stem cells, have demonstrated intrinsic age-related changes that could impact fracture healing...
November 16, 2017: Current Osteoporosis Reports
https://www.readbyqxmd.com/read/29143868/fishtail-deformity-of-the-distal-humerus-association-with-osteochondritis-dissecans-of-the-capitellum
#5
Stephen J Lehnert, Matthew R Wanner, Boaz Karmazyn
BACKGROUND: Fishtail deformity is a rare deformity of the humerus exhibiting concavity of the lateral trochlea, resulting in ulnotrochlear joint derangement. We wanted to share our experience that osteochondritis dissecans of the capitellum is a common associated complication. OBJECTIVE: To summarize imaging of fishtail deformity in children centered on complications of the radiocapitellar joint. MATERIALS AND METHODS: From the radiology information system, we identified all patients <18 years with the diagnosis of fishtail deformity...
November 16, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/29143065/-complex-joint-reconstruction-and-joint-transplantation-with-the-flocsat-concept-planning-and-surgical-implementation
#6
REVIEW
C Krettek, J-D Clausen, C Neunaber
Cartilage defects in adult patients are so far incurable. Fresh osteochondral allograft (OCA) transplantation is based on the insertion of mature, living, mechanically sound hyaline cartilage into an osteochondral defect where it undergoes osseointegration. Intact hyaline cartilage of OCA does not cause immune reactions in the recipient. Many reports show that small OCA have good osseointegration and show good long-term results. These observations have been incorporated into the development of the fresh large (> 10 cm(2)) osteochondral shell allograft transplantation (FLOCSAT) concept, which is based on the following principles: 1) the thickness of the osseous layer should be kept as thin as possible (target < 6-8 mm) so that the transplant remains stable and fixable...
November 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/29140738/do-outcomes-of-osteochondral-allograft-transplantation-differ-based-on-age-and-sex-a-comparative-matched-group-analysis
#7
Rachel M Frank, Eric J Cotter, Simon Lee, Sarah Poland, Brian J Cole
BACKGROUND: The effect of patient age or sex on outcomes after osteochondral allograft transplantation (OCA) has not been assessed. PURPOSE: To determine clinical outcomes for male and female patients aged ≥40 years undergoing OCA compared with a group of patients aged <40 years. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: A review of prospectively collected data of consecutive patients who underwent OCA by a single surgeon with a minimum follow-up of 2 years was conducted...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29138920/concurrent-arthroscopic-osteochondral-lesion-treatment-and-lateral-ankle-ligament-repair-has-no-substantial-effect-on-the-outcome-of-chronic-lateral-ankle-instability
#8
Dong Jiang, Yin-Fang Ao, Chen Jiao, Xing Xie, Lin-Xin Chen, Qin-Wei Guo, Yue-Lin Hu
PURPOSE: The purpose of the study was to evaluate the effect of concurrent arthroscopic osteochondral lesion (OCL) treatment and lateral ankle ligament repair on the outcome of chronic lateral ankle instability. It was hypothesized that the arthroscopic OCL treatment might have some negative effect on the outcome of chronic lateral ankle instability (CLAI) by compromising the rehabilitation program. METHODS: Ankle arthroscopy and anatomic lateral ankle ligament repair with suture anchors were performed for 70 patients with CLAI between 2010 and 2012...
November 14, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29138892/-partial-and-complete-joint-transplantation-with-fresh-osteochondral-allografts-the-flocsat-concept
#9
REVIEW
C Krettek, J-D Clausen, N Bruns, C Neunaber
Cartilage defects in adult patients do not heal well. Fresh osteochondral allograft (OCA) transplantation is based on mature, living, mechanically sound hyaline cartilage attached to a bone interface, which is brought into an osteochondral defect, where it becomes osseointegrated. According to current knowledge, intact hyaline cartilage tissue is immune privileged and does not, in contrast to bone, meniscus or ligaments, cause an immune reaction. The technique has the unique advantage of transplanting viable, mature and mechanically stable hyaline cartilage into the affected area...
November 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/29134368/-patellofemoral-instability
#10
S F Fucentese
Patellofemoral instability is an extremely limiting pathology in young and active patients. Anatomical reasons for patellar instability, such as high-riding patella, elevated distance from the tibial tuberosity to trochlear groove (TTTG), trochlear dysplasia, insufficient medial patellofemoral ligament (MPFL) and malpositioning of the axes and torsion can lead to chronic patellofemoral instability and must be thoroughly analyzed. The first dislocation can be treated conservatively, with the exception of an osteochondral defect...
November 13, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/29134239/temporomandibular-joint-atlas-for-detection-and-grading-of-juvenile-idiopathic-arthritis-involvement-by-magnetic-resonance-imaging
#11
Christian J Kellenberger, Thitiporn Junhasavasdikul, Mirkamal Tolend, Andrea S Doria
Contrast-enhanced magnetic resonance imaging (MRI) is considered the diagnostic standard for identifying involvement of the temporomandibular joint by juvenile idiopathic arthritis. Early or active arthritis is shown as bone marrow oedema, joint effusion, synovial thickening and increased joint enhancement. Subsequent joint damage includes characteristic deformity of the mandibular condyle, bone erosion, disk abnormalities and short mandibular ramus due to impaired growth. In this pictorial essay, we illustrate normal MRI findings and growth-related changes of the temporomandibular joint in children...
November 13, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/29134116/targeting-subchondral-bone-mesenchymal-stem-cell-activities-for-intrinsic-joint-repair-in-osteoarthritis
#12
REVIEW
Dragos C Ilas, Sarah M Churchman, Dennis McGonagle, Elena Jones
Osteoarthritis (OA) is a common age-related disease with complex pathophysiology. It is characterized by wide-ranging tissue damage and ultimate biomechanical failure of the whole joint. However, signs of tissue adaptation and attempted repair responses are evident in OA-affected osteochondral tissues. Highlighted in this review article is the role of bone-resident mesenchymal stem cells (MSCs) in these bone remodeling responses, and a proposal that targeting MSC activities in OA subchondral bone could represent a novel approach for intrinsic joint regeneration in OA...
November 2017: Future Science OA
https://www.readbyqxmd.com/read/29132902/histopathological-assessment-of-primary-osteoarthritic-knees-in-large-patient-cohort-reveal-the-possibility-of-several-potential-patterns-of-osteoarthritis-initiation
#13
V P Mantripragada, N S Piuzzi, T Zachos, N A Obuchowski, G F Muschler, R J Midura
OBJECTIVE: The two main objectives of the study include (1) Test the hypothesis that the lateral femoral condyle (LFC) in patients with primary OA and varus knees undergoing total knee arthroplasty (TKA) can be used as a model to better characterize varying histological features of human OA, (2) Correlate characteristic OA features using the established histopathological scoring systems (HHGS and OARSI) to understand potential histopathological patterns of OA initiation. DESIGN: Two osteochondral specimens (4×4×8mm) were collected from fifty patient's LFC at the time of TKA (total 100 specimens), who presented preserved lateral knee compartment with joint space width>2mm...
November 10, 2017: Current Research in Translational Medicine
https://www.readbyqxmd.com/read/29128537/biomaterials-for-articular-cartilage-tissue-engineering-learning-from-biology
#14
REVIEW
A R Armiento, M J Stoddart, M Alini, D Eglin
Articular cartilage is commonly described as a tissue made of up to 80% water, devoid of blood vessels, nerves and lymphatics, and populated by only one cell type: at first glance, an easy tissue for clinicians to repair and for scientists to reproduce in a laboratory. Yet, chondral and osteochondral defects currently remain an open challenge in orthopedics and tissue engineering of the musculoskeletal system, without considering osteoarthritis. Why do we fail in repairing and regenerating articular cartilage? Behind its simple and homogenous appearance articular cartilage hides a heterogeneous composition, a high level of organisation and specific biomechanical properties that taken together make articular cartilage a unique material that we are not able yet to repair or reproduce with high fidelity...
November 8, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29126043/biphasic-bioresorbable-scaffold-trufit-plug-%C3%A2-for-the-treatment-of-osteochondral-lesions-of-talus-6-to-8-year-follow-up
#15
Elvira Di Cave, Pierluigi Versari, Fabio Sciarretta, David Luzon, Lorenzo Marcellini
BACKGROUND: The ideal treatment of osteochondral lesions of the talus (OLT) is debatable. The TruFit plug has been investigated as a potential treatment method for osteochondral defects. This is a biphasic scaffold designed to stimulate cartilage and subchondral bone formation. The purpose of this retrospective study was to investigate the long-term functional and MRI outcomes of the TruFit Plug for the treatment of OLT. METHODS: Twelve consecutive patients treated from March 2007 to April 2009 for OLT were evaluated...
June 3, 2017: Foot
https://www.readbyqxmd.com/read/29125919/autologous-chondrocyte-implantation-sandwich-technique-compared-with-autologous-bone-grafting-for-deep-osteochondral-lesions-in-the-knee
#16
Tom Minas, Takahiro Ogura, Jeff Headrick, Tim Bryant
BACKGROUND: Treating symptomatic osteochondral defects is challenging, especially in young adults with deep (>8-10 mm) empty defects after osteochondritis dissecans (OCD) or collapsed condyles secondary to avascular necrosis (AVN). For this population, osteoarthritis (OA) is inevitable if articular congruence is not restored. PURPOSE: To describe the autologous chondrocyte implantation (ACI) "sandwich" technique with autologous bone grafting (ABG) and compare it with ABG alone for restoration of the osteochondral unit...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29124019/a-protocol-for-gene-expression-analysis-of-chondrocytes-from-bovine-osteochondral-plugs-used-for-biotribological-applications
#17
Christoph Bauer, Eugenia Niculescu-Morzsa, Stefan Nehrer
RNA isolation from human or animal cartilage tissue is necessary when performing mechanical or biotribological applications. Despite no influence on the cells and no alterations in gene expression patterns, enzymatic digestion of tissues should be avoided as it's known that the expression of collagen 2 can be effected (Hayman et al., 2006 [1]). After mechanical or biotribological tests alternative options with an immediate disruption of the tissue should be contemplated. To obtain RNA, different tissue homogenization and disruption methods are available on the market (Yu et al...
2017: MethodsX
https://www.readbyqxmd.com/read/29119853/high-occurrence-of-osteoarthritic-histopathological-features-unaccounted-for-by-traditional-scoring-systems-in-lateral-femoral-condyles-from-total-knee-arthroplasty-patients-with-varus-alignment
#18
Venkata P Mantripragada, Nicolas S Piuzzi, Terri Zachos, Nancy A Obuchowski, George F Muschler, Ronald J Midura
Background and purpose - A better understanding of the patterns and variation in initiation and progression of osteoarthritis (OA) in the knee may influence the design of therapies to prevent or slow disease progression. By studying cartilage from the human lateral femoral condyle (LFC), we aimed to: (1) assess specimen distribution into early, mild, moderate, and severe OA as per the established histopathological scoring systems (HHGS and OARSI); and (2) evaluate whether these 2 scoring systems provide sufficient tools for characterizing all the features and variation in patterns of OA...
November 9, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/29119286/no-effect-of-topical-application-of-tranexamic-acid-on-articular-cartilage
#19
Luiz Felipe Ambra, Laura de Girolamo, Wanting Niu, Amy Phan, Myron Spector, Andreas H Gomoll
PURPOSE: The objective of this study was to evaluate potential cytotoxicity of TXA on articular cartilage by assessing chondrocyte viability of osteochondral explants after exposure to different concentrations and durations of TXA. METHODS: Thirty-nine osteochondral plugs (OCPs) were harvested from three adult Yucatan minipigs immediately after their death. OCPs were divided into 13 groups exposed to different concentrations of TXA (1, 2 and 4 mg/ml in saline solution) for 1, 3 and 6 h...
November 8, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29117842/distraction-arthroplasty-in-an-osteochondral-defect-of-the-middle-finger-in-a-juvenile-patient
#20
In Cheul Choi, Jong Woong Park, Kwang Suk Lee, Dong Min Kim
A 13-year-old female patient visited our hospital with a painful distal interphalangeal joint and deformity on her right middle finger. Initial plain radiographs uncovered ulnar-sided subluxation of the distal interphalangeal joint of the right middle finger, and an osteochondral defect was also noted at the articular surface of the distal and middle phalanges. We decided to attempt distraction arthroplasty with an external fixator. Finally postoperative 12-month follow-up plain radiographs showed complete osteochondral regeneration and phalangeal alignment...
December 2017: Journal of Hand Surgery Asian-Pacific Volume
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