[Open-wedge high tibial osteotomy and unicomartmental knee arthroplasty in treating medial compartment osteoarthritis of the knee: a Meta analysis].

OBJECTIVE: To systematic evaluate the outcome of open-wedge high tibial osteotomy(OWHTO) and unicomartmental knee arthroplasty (UKA) in treating medial compartment osteoarthritis of the knee. METHODS: According to the retrieval strategy made by the Cochrane collaboration, a computer-base research of Medline, Pubmed, EMbase, Cochrane Library, CBM, CNKI, and Wanfang databases was performed and search deadline was March 2018. Related Chinese and English orthopedic journals and conference papers were manually searched. Controlled studies of OWHTO and UKA in the treatment of medial knee osteoarthritis were included. The quality of included researches was evaluated, and the data of postoperative knee function, complications, total knee arthroplasty(TKA) revision rates, and postoperative pain were extracted. Meta analysis was performed using the RevMan 5.0 software. RESULTS: A total of 8 articles that met the criteria were included containing a total of 675 patients. Meta-analysis showed that there was no significant difference in postoperative HSS score, knee score, functional score, and Lysholm score between the OWHTO and UKA groups(P=0.32, P=0.87, P=0.22, P=0.53). The range of joint motion in the OWHTO group was better than that in the UKA group, and the difference was statistically significant(P=0.009). There was no significant difference in postoperative complications and the rates of revision to TKA between the two groups(P=0.81, P=0.23). There was no difference in postoperative knee pain between the two groups. CONCLUSIONS: In the treatment of medial compartmental osteoarthritis of the knee that meets the surgical indications, OWHTO had better postoperative joint mobility. The results were similar in postoperative knee score, postoperative complications, and postoperative TKA revision rates between OWHTO and UKA groups.

[Effect of Buyanghuanwu decoction on neuronal nitric oxide synthase expression after permanent focal cerebral ischemia in rats].

OBJECTIVE: To observe the effect of Buyanghuanwu decoction (BYHWD) on neuronal nitric oxide synthase (nNOS) immunoreactivity after permanent focal cerebral ischemia in rats. METHODS: The rats were randomized into normal control group, cerebral ischemia model groups (with ischemia for 1, 4, and 10 h respectively), and corresponding ischemia groups treated with BYHWD. Focal cerebral ischemia was produced by permanent middle cerebral artery occlusion (MCAO) with nylon suture inserted through the internal carotid artery. Brain nNOS in different brain regions was assayed by SABC immunohistochemistry at different time points ranging from 1 to 10 h after occlusion. RESULTS: nNOS activity in the cerebral tissues was enhanced in the ischemic hemisphere as the time following ischemia prolonged. Pretreatment with BYHWD group significantly decreased nNOS activity to 170.80+/-21.71 and 189.20+/-18.53 in the striatum cortex 18a region and to 127.33+/-19.83, 215.20+/-38.80, and 191.20+/-22.39 in the caudate putamen, in comparison with the untreated cerebral ischemia model group (244.60+/-12.44 and 363.00+/-24.82 in the striatum cortex 18a region and 138.67+/-13.99, 266.40+/-29.25, and 373.20+/-31.55 in the caudate putamen, P<0.05), and this effect began to be observed in the early stage of ischemia and gradually high-lighted as the ischemia time increased. CONCLUSION: BYHWD significantly restrains the up-regulated activity of nNOS after focal cerebral ischemia to protect the cerebral ischemic lesion from the early stage following the onset of ischemia.