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https://www.readbyqxmd.com/read/28969891/standard-versus-bony-increased-offset-reverse-shoulder-arthroplasty-a-retrospective-comparative-cohort-study
#1
Philippe Collin, Xin Liu, Patrick J Denard, Soleen Gain, Alexandra Nowak, Alexandre Lädermann
BACKGROUND: To date, only a few comparative studies with small sample sizes have compared a traditional reverse shoulder arthroplasty (tRSA) to a bony increased-offset RSA (BIO-RSA). We hypothesized that the BIO-RSA would lead to lower notching rates and improved range of motion (ROM) compared with a tRSA. METHODS: A retrospective review was performed of 69 tRSAs and 61 BIO-RSAs performed by a single surgeon. At 2 years postoperative, ROM and Constant scores were compared...
September 29, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28966669/salvianolic-acid-b-and-danshensu-induce-osteogenic-differentiation-of-rat-bone-marrow-stromal-stem-cells-by-upregulating-the-nitric-oxide-pathway
#2
Xinle Zhang, Liyi Zou, Jin Li, Bilian Xu, Tie Wu, Huanqiong Fan, Weiming Xu, Weimin Yao, Yajun Yang, Yuyu Liu, Liao Cui
The aim of the present study was to investigate the effect of salvianolic acid B (Sal B) and danshensu (DSU) on the osteogenic differentiation of bone marrow mesenchymal stem cells (MSCs) and the mechanisms of the effects. The osteogenic differentiation of MSCs in culture was assessed by measuring alkaline phosphatase (ALP) activity, osteocalcin (OCN) production, nitric oxide (NO) production and the mRNA expression levels of osteoprotegerin (OPG) and its ligand by MSCs. MSCs were successfully induced to differentiate into osteoblasts and adipocytes...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28856360/postpartum-treatment-of-metastatic-recurrent-giant-cell-tumor-of-capitate-bone-of-wrist
#3
Robert L Satcher, Vinod Ravi, Wei-Lien Wang, Scott Oates
Giant cell tumors (GCTs) are aggressive benign lesions that occur in the bone epiphysis. They are most often found in the long bones of the lower extremities. Wrist bone involvement is rare, capitate bone involvement exceedingly rare. Treatment in the wrist usually consists of excision, local adjuvant treatment, and cementing and/or bone grafting. GCTs also metastasize to the lungs; pulmonary lesions are excised and systemic therapy provided. We present the case of a 19-year-old woman with GCT of the capitate bone...
July 2017: American Journal of Orthopedics
https://www.readbyqxmd.com/read/28804565/thrombospondin-1-inhibits-ossification-of-tissue-engineered-cartilage-constructed-by-adscs
#4
Aiguo Xie, Jixin Xue, Gan Shen, Lanjun Nie
Cartilage tissue engineering provides a new method in the treatment of cartilage defects, and adipose derived stem cells seem to be an ideal seed cell in cartilage tissue engineering because of its characteristics. However, ossification after in vivo implantation of tissue engineered cartilage remains a challenge. Thrombospondin-1 which has been reported to have an inhibitory effect on angiogenesis, may play an important role in inhibiting the ossification of tissue engineered cartilage constructed by adipose derived stem cells...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28751094/revision-of-failed-shoulder-hemiarthroplasty-to-reverse-total-arthroplasty-analysis-of-157-revision-implants
#5
Giovanni Merolla, Eric Wagner, John W Sperling, Paolo Paladini, Elisabetta Fabbri, Giuseppe Porcellini
BACKGROUND: There remains a paucity of studies examining the conversion of failed hemiarthroplasty (HA) to reverse total shoulder arthroplasty (RTSA). Therefore, the purpose of this study was to examine a large series of revision HA to RTSA. METHODS: A population of 157 patients who underwent conversion of a failed HA to a revision RTSA from 2006 through 2014 were included. The mean follow-up was 49 months (range, 24-121 months). The indications for revision surgery included instability with rotator cuff insufficiency (n = 127) and glenoid wear (n = 30); instability and glenoid wear were associated in 38 cases...
July 24, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28702700/clinical-and-radiological-outcomes-after-reverse-shoulder-arthroplasty-with-less-medialized-endoprosthesis-after-mean-follow-up-time-of-45%C3%A2-months
#6
Justinas Jonušas, Rūta Banytė, Sigitas Ryliškis
INTRODUCTION: The purpose of this study was to evaluate outcomes after reverse shoulder arthroplasty for the treatment of complex three- and four-fragment proximal humeral fractures after mean follow-up time of 45 months and to compare our results with the results published by other authors. MATERIALS AND METHODS: Retrospectively we have analyzed 27 consecutive patients after total arthroplasty with less medialized reverse shoulder prosthesis used for the treatment of complex proximal humeral fracture...
July 12, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28677757/hypertrophic-differentiation-of-mesenchymal-stem-cells-is-suppressed-by-xanthotoxin-via-the-p38%C3%A2-mapk-hdac4-pathway
#7
Zhen Cao, Yun Bai, Chuan Liu, Ce Dou, Jianmei Li, Junyu Xiang, Chunrong Zhao, Zhao Xie, Qiang Xiang, Shiwu Dong
Chondrocyte hypertrophy is a physiological process in endochondral ossification. However, the hypertrophic‑like alterations of chondrocytes at the articular surface may result in osteoarthritis (OA). In addition, the generation of fibrocartilage with a decreased biological function in tissue engineered cartilage, has been attributed to chondrocyte hypertrophy. Therefore, suppressing chondrocyte hypertrophy in OA and the associated regeneration of non‑active cartilage is of primary concern. The present study examined the effects of xanthotoxin (XAT), which is classified as a furanocoumarin, on chondrocyte hypertrophic differentiation of mesenchymal stem cells...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28529654/histological-histochemical-and-ultrastructural-study-of-slipped-capital-femoral-epiphysis
#8
I Tresoldi, A Modesti, M Dragoni, V Potenza, E Ippolito
PURPOSE: The purpose of our study was to investigate the histological, histochemical and ultrastructural aspects of the proximal femoral growth plate in slipped capital femoral epiphysis (SCFE). METHODS: Eight core biopsies of the proximal femoral growth plate were performed during in situ epiphysiodesis in patients with SCFE that was at the pre-slipping stage in two cases and at the mild slipping stage (Southwick angle < 30°) in six cases. After fixation, the specimens were processed for either histological or histochemical or ultrastructural studies...
April 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28470873/bmp9-induces-osteogenesis-and-adipogenesis-in-the-immortalized-human-cranial-suture-progenitors-from-the-patent-sutures-of-craniosynostosis-patients
#9
Dongzhe Song, Fugui Zhang, Russell R Reid, Jixing Ye, Qiang Wei, Junyi Liao, Yulong Zou, Jiaming Fan, Chao Ma, Xue Hu, Xiangyang Qu, Liqun Chen, Li Li, Yichun Yu, Xinyi Yu, Zhicai Zhang, Chen Zhao, Zongyue Zeng, Ruyi Zhang, Shujuan Yan, Tingting Wu, Xingye Wu, Yi Shu, Jiayan Lei, Yasha Li, Wenwen Zhang, Jia Wang, Michael J Lee, Jennifer Moriatis Wolf, Dingming Huang, Tong-Chuan He
The cranial suture complex is a heterogeneous tissue consisting of osteogenic progenitor cells and mesenchymal stem cells (MSCs) from bone marrow and suture mesenchyme. The fusion of cranial sutures is a highly coordinated and tightly regulated process during development. Craniosynostosis is a congenital malformation caused by premature fusion of cranial sutures. While the progenitor cells derived from the cranial suture complex should prove valuable for studying the molecular mechanisms underlying suture development and pathogenic premature suture fusion, primary human cranial suture progenitors (SuPs) have limited life span and gradually lose osteoblastic ability over passages...
May 4, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28444541/reverse-shoulder-arthroplasty-for-massive-irreparable-rotator-cuff-tears-and-cuff-tear-arthropathy-a-systematic-review
#10
REVIEW
S Petrillo, U G Longo, R Papalia, V Denaro
PURPOSE: To report the outcomes and complications of reverse shoulder arthroplasty (RSA) in massive irreparable rotator cuff tears (MIRCT) and cuff tear arthropathy (CTA). METHODS: A systematic review of the literature contained in Medline, Cochrane, EMBASE, Google Scholar and Ovid databases was conducted on May 1, 2016, according to PRISMA guidelines. The key words "reverse total shoulder arthroplasty" or "reverse total shoulder prostheses" with "rotator cuff tears"; "failed rotator cuff surgery"; "massive rotator cuff tears"; "irreparable rotator cuff tears"; "cuff tear arthropathy"; "outcomes"; "complications" were matched...
August 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/28304100/cartilage-specific-autophagy-deficiency-promotes-er-stress-and-impairs-chondrogenesis-in-perk-atf4-chop-dependent-manner
#11
Xiaomin Kang, Wei Yang, Dongxu Feng, Xinxin Jin, Zhengmin Ma, Zhuang Qian, Tianping Xie, Huixia Li, Jiali Liu, Ruiqi Wang, Fang Li, Danhui Li, Hongzhi Sun, Shufang Wu
Autophagy is activated during nutritionally depleted or hypoxic conditions to facilitate cell survival. Because growth plate is an avascular and hypoxic tissue, autophagy may have a crucial role during chondrogenesis; however, the functional role and underlying mechanism of autophagy in regulation of growth plate remains elusive. In this study, we generated (TamCart) Atg7(-/-) (Atg7cKO) mice to explore the role of autophagy during endochondral ossification. Atg7cKO mice exhibited growth retardation associated with reduced chondrocyte proliferation and differentiation, and increased chondrocyte apoptosis...
March 17, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28266688/the-bmp2-variant-l51p-restores-the-osteogenic-differentiation-of-human-mesenchymal-stromal-cells-in-the-presence-of-intervertebral-disc-cells
#12
A Tekari, R D May, D A Frauchiger, S C Chan, L M Benneker, B Gantenbein
Spinal fusion is hampered by the presence of remaining intervertebral disc (IVD) tissue and leads to spinal non-union. While the exact mechanism remains unknown, we hypothesise that factors preventing disc ossification, such as antagonists of the bone morphogenetic proteins (BMP), could be responsible for this process. The objective of this study was to investigate spinal non-union using an in vitro human model with a focus on the BMP signalling components and to identify factors contributing to the incomplete and delayed ossification...
February 23, 2017: European Cells & Materials
https://www.readbyqxmd.com/read/28259914/dynamics-of-mmp%C3%A2-9-mmp%C3%A2-2-and-timp%C3%A2-1-in-a-rat-model-of-brain-injury-combined-with-traumatic-heterotopic-ossification
#13
Wei-Zhe Shi, Jin-Yong Ju, Hai-Jun Xiao, Feng Xue, Jiang Wu, Ming-Mang Pan, Wei-Feng Ni
The present study aimed to detect early changes in the concentration of matrix metalloproteinase-9 (MMP-9), matrix metalloproteinase‑2 (MMP‑2) and tissue inhibitor of metalloproteinase‑1 (TIMP‑1) in a rat model of brain injury combined with traumatic heterotopic ossification (HO). A total of 132 male Sprague‑Dawley rats were used to establish the experimental and control groups. Anatomy and sample collection were conducted on postoperative days 1, 2, 3, 4, 5, 6 and 7. Hematoxylin and eosin and immunohistochemical staining were performed for local tissues...
April 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28195961/bedside-ultrasound-to-facilitate-early-diagnosis-and-ease-of-follow-up-in-neurogenic-heterotopic-ossification-a-pilot-study-from-the-intensive-care-unit
#14
Konstantinos Stefanidis, Peter Brindley, Raymond Ramnarine, Michael Blaivas, Mohammad Daneshi, Paul S Sidhu, Abdoulrahman Alharthy, Dimitrios Karakitsos
OBJECTIVE: To explore the potential role of ultrasound (US) as a bedside tool in intensive care unit patients with presumed neurogenic heterotopic ossification (NHO). SETTING: Tertiary university teaching hospitals. PARTICIPANTS: Critical care patients with acquired brain injury. DESIGN: A multicenter prospective study of critical care patients with possible NHO. MAIN MEASURES: Following a screening clinical examination, the major joints were evaluated with US, serum laboratory work, and x-ray...
February 10, 2017: Journal of Head Trauma Rehabilitation
https://www.readbyqxmd.com/read/28162886/dislocation-following-reverse-total-shoulder-arthroplasty
#15
Eitan M Kohan, Peter N Chalmers, Dane Salazar, Jay D Keener, Ken Yamaguchi, Aaron M Chamberlain
BACKGROUND: The etiology of instability following reverse total shoulder arthroplasty (RTSA) remains incompletely understood. The purpose of this study was to describe the shared characteristics, etiologies, and outcomes of early and late dislocations requiring operative revision. METHODS: We identified all patients at our institution who underwent operative revision of an RTSA for instability. Baseline demographic, clinical, and radiographic data were collected...
February 3, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28127148/identification-of-foramen-of-huschke-with-reversible-herniation-of-temporomandibular-joint-soft-tissue-into-the-external-auditory-canal-on-multidetector-computed-tomography
#16
Shallini Mittal, Samita Singal, Amit Mittal, Rikki Singal, Gunjan Jindal
The foramen of Huschke, or foramen tympanicum, is a developmental defect in the bony part of the external auditory canal (EAC) due to a defect in ossification of normal bone in the first 5 years of life. Seen in the anteroinferior part of the EAC, it can be asymptomatic or present with salivary discharge into the EAC during mastication or as soft tissue swelling in the EAC in the absence of any inflammation, tumor, or trauma. We present a case of a man who presented with herniation of soft tissues of the temporomandibular joint into the EAC through a persistent foramen tympanicum...
January 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28107238/roles-of-the-endoplasmic-reticulum-stress-transducer-oasis-in-ossification-of-the-posterior-longitudinal-ligament
#17
Yu Chen, Haisong Yang, Jinhao Miao, Xiaowei Liu, Xinwei Wang, Deyu Chen
STUDY DESIGN: In vitro molecular research on the posterior longitudinal ligament fibroblasts. OBJECTIVE: To investigate different expression of old astrocyte specifically induced substance (OASIS) between spinal ligament fibroblasts from the patients with ossification of the posterior longitudinal ligament (OPLL) and from non-OPLL patients and demonstrate knockdown of OASIS protein expression by RNA interference inhibiting expression of type I collagen (COL I) in OPLL cells...
February 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27959380/sequencing-and-bioinformatics-analysis-of-the-differentially-expressed-genes-in-herniated-discs-with-or-without-calcification
#18
Jia Shao, Miao Yu, Liang Jiang, Fengliang Wu, Xiaoguang Liu
The purpose of this study was to detect the differentially expressed genes between ossified herniated discs and herniated discs without ossification. In addition, we sought to identify a few candidate genes and pathways by using bioinformatics analysis. We analyzed 6 samples each of ossified herniated discs (experimental group) and herniated discs without ossification (control group). Purified mRNA and cDNA extracted from the samples were subjected to sequencing. The NOISeq method was used to statistically identify the differentially expressed genes (DEGs) between the 2 groups...
January 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27845261/ddit3-suppresses-the-differentiation-of-mouse-chondroprogenitor-cells
#19
Miao Yu, Si-Qi Yi, Yan-Ru Wu, Hua-Ling Sun, Fang-Fang Song, Jia-Wei Wang
Endochondral ossification is an essential skeletal development process which is strongly linked to chondrocyte differentiation. DNA damage-inducible transcript 3 (Ddit3), a member of the CCAAT/enhancer-binding protein family of transcription factors, is highly expressed in the cartilage plate. However, the role of DNA damage-inducible transcript 3 in chondrocyte differentiation remains to be investigated. Immunofluorescent staining was used to detect Ddit3 expression in the mouse growth plate and in the mouse chondroprogenitor cell line ATDC5...
December 2016: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/27779644/all-trans-retinoic-acid-shifts-rosiglitazone-induced-adipogenic-differentiation-to-osteogenic-differentiation-in-mouse-embryonic-fibroblasts
#20
Ying Shao, Qian-Zhao Chen, Yu-Hua Zeng, Yang Li, Wen-Yan Ren, Lin-Yun Zhou, Rong-Xin Liu, Ke Wu, Jun-Qing Yang, Zhong-Liang Deng, Yu Yu, Wen-Juan Sun, Bai-Cheng He
Rosiglitazone (RSG) is a potent drug used in the treatment of insulin resistance; however, it is associated with marked skeletal toxicity. RSG-induced osteoporosis may contribute to the promotion of adipogenic differentiation at the expense of osteogenic differentiation in bone marrow stromal cells. The aim of this study was to investigate whether RSG-induced bone toxicity can be reversed by combined treatment with all-trans retinoic acid (ATRA). We examined different osteogenic markers in mouse embryonic fibroblasts (MEFs) following treatment with RSG, ATRA, or RSG and ATRA in combination...
December 2016: International Journal of Molecular Medicine
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