BACKGROUND: At present, there are many ways to treat acromioclavicular joint dislocation, mainly based on clavicular hook plate, but the anatomical reconstruction of the trapezoid ligament and conoid ligament of the acromioclavicular ligament is the most important trend in the treatment of acromioclavicular joint dislocation. Endobutton plate has been widely promoted in recent years. A large number of randomized controlled trials and retrospective study showed that it has better efficacy and lower incidence of complications compared with the clavicular hook plate. OBJECTIVE: To evaluate the excellent and good rate and the short-term incidence of complication between Endobutton plate and clavicular hook plate in the treatment of acromioclavicular joint dislocation. METHODS: The Cochrane Library (1966-06/2017-05), PubMed (1966-06/2017-05), MEDLINE (1966-02/2017-05), EMbase (1984-01/2017-05), CNKI (1979-01/2017-05), VIP (1989-01/2017-05), and Wanfang (1982-01/2017-05) databases were searched by computer. Simultaneously, six major Chinese orthopedic journals were retrieved by hand, and the references included in the related articles were consulted. Randomized controlled trials addressing Endobutton plates and clavicular hook plates for the treatment of acromioclavicular joint dislocation were collected. The literatures were screened for inclusion criteria, and their qualities were evaluated. Meta-analysis was performed using RevMan 5.3 software. RESULTS AND CONCLUSION: (1) A total of 13 randomized controlled trials containing 800 patients were included in the study. 394 patients were treated with Endobutton plate and 406 patients with clavicular hook plate as controls. Among which, only one study was compared in three different ways; the rest were compared between Endobutton plate and clavicular hook plate. (2) Meta-analysis showed that the excellent and good rate of Endobutton plate was superior to that of clavicular hook plate in the treatment of acromioclavicular joint dislocation (P < 0.000 01). Compared with clavicular hook plate, the incidence of incision infection, acromioclavicular joint pain, limited activity and redislocation were lower in Endobutton plate (P=0.02, < 0.001, < 0.00001, 0.03). (3) These findings suggested that the effect of Endobutton plate was better than that of clavicular hook plate in the treatment of acromioclavicular joint dislocation. The incidences of incision infection, acromioclavicular joint pain, limited mobility, and redislocation were lower in Endobutton plate than in the clavicular hook plate. Although the article included many randomized controlled trials, the qualities of these articles are limited. We still need to design more strictly large-sample randomized controlled trials to increase the credibility of the evidence.

BACKGROUND:The phosphatidylinositol 3-kinase/protein kinase(PI3K/AKT)signaling pathway plays a pivotal role in regulating osteoclast activation,which is essential for maintaining bone homeostasis.Bone destruction in osteoarticular tuberculosis is caused by aberrant osteoclastogenesis induced by Mycobacterium tuberculosis infection.However,the role of the PI3K signaling pathway in Mycobacterium tuberculosis-induced aberrant osteoclastogenesis remains unclear. OBJECTIVE:To investigate the effects and mechanisms of the PI3K/AKT signaling pathway inhibitor BYL-719 on aberrant osteoclastogenesis induced by Mycobacterium tuberculosis. METHODS:RAW264.7 cells were infected with bovine Mycobacterium tuberculosis bacillus calmette-cuerin vaccine,and Ag85B was used for cellular immunofluorescence staining.The cell counting kit-8 assay was employed to determine the safe concentration of BYL-719.There were four groups in the experiment:blank control group,BYL-719 group,BCG group,and BCG+BYL-719 group.Under the induction of receptor activator of nuclear factor kappa-B ligand,the effects of BYL-719 on post-infection osteoclast differentiation and fusion were explored through tartrate-resistant acid phosphatase staining and phalloidin staining.RT-PCR and western blot were used to detect the expression of osteoclast-related genes and proteins,and further investigate the mechanism of action. RESULTS AND CONCLUSION:Immunofluorescence staining showed that RAW264.7 cells phagocytosed Mycobacterium tuberculosis.Cell counting kit-8 data indicated that 40 nmol/L BYL-719 was non-toxic to cells.Tartrate-resistant acid phosphatase staining and phalloidin staining showed that BYL-719 inhibited the generation and fusion ability of osteoclasts following infection.RT-PCR and western blot results also indicated that BYL-719 suppressed the upregulation of osteoclast-specific genes(including c-Fos,NFATc1,matrix metalloproteinase 9,and CtsK)induced by Mycobacterium tuberculosis infection(P<0.05).Western blot and immunofluorescence staining revealed that BYL-719 inhibited excessive osteoclast differentiation induced by Mycobacterium tuberculosis by downregulating the expression of IκBα-p65.To conclude,BYL-719 inhibits aberrant osteoclastogenesis induced by Mycobacterium tuberculosis through the downregulation of IκBα/p65.Therefore,the IκBα/p65 signaling pathway is a potential therapeutic target for osteoarticular tuberculosis,and BYL-719 holds potential value for the preventing and amelioration of bone destruction in osteoarticular tuberculosis.BYL-719 has the potential to prevent and ameliorate bone destruction in osteoarticular tuberculosis.