目的 比較拉米夫定+阿德福韋酯聯合治療與阿德福韋酯單藥治療對阿德福韋酯停藥后出現病毒學反彈而無基因型耐藥變異患者的療效及安全性。 方法 回顧研究2007年1月－2012年1月在傳染科門診就診的67例阿德福韋酯治療獲得病毒學應答但停藥后出現病毒學反彈的e抗原陽性慢性乙型肝炎患者，分別給予拉米夫定+阿德福韋酯聯合治療（聯合組，n=35）和阿德福韋酯單藥治療（單藥組，n=32）。 結果 治療1年后，聯合組（32例，85.7%）較單藥組（21例，65.6%）有更多的患者重新獲得了丙氨酸轉氨酶復常（P=0.009），聯合組34例（97.1%）乙型肝炎病毒DNA陰轉，單藥組22例（68.8%）陰轉，兩組差異有統計學意義（P=0.002）；在血清學轉換方面，聯合組和單藥組分別有4例（11.4%）和1例（3.1%）患者獲得了e抗原的血清學轉換。在治療中所有患者均未發生任何嚴重不良反應。 結論 阿德福韋酯停藥后出現病毒學反彈，選擇拉米夫定與阿德福韋酯聯合治療可使患者重新獲得較好的生化學和病毒學應答。
Objective To investigate the accuracy of split three-dimensional (3D) printing patient-specific instrumentation (PSI) in medial open-wedge high tibial osteotomy (MOWHTO) and its effectiveness in treating medial knee osteoarthritis.MethodsClinical data of 14 patients with medial knee osteoarthritis and treated with split 3D printing PSI-assisted MOWHTO between August 2019 and August 2020 were retrospectively analyzed. There were 5 males and 9 females with an average age of 61 years (range, 43-68 years). The disease duration ranged from 1 to 16 years, with an average of 4.7 years. Preoperative Kellgren-Lawrence grading of knee osteoarthritis included grade Ⅰ in 2 cases, grade Ⅱ in 6 cases, and grade Ⅲ in 6 cases. The Hospital for Special Surgery (HSS) score was 59.1±4.9. The weight bearing line ratio (WBL), hip-knee-ankle angle (HKA), medial proximal tibial angle (MPTA), posterior tibial slope angle (PTSA), and actual correction angle of the lower limbs were measured on postoperative imaging data, and compared with the preoperative measurements and the designed target values to evaluate the accuracy of the PSI-assisted surgery. The patients’ knee function were evaluated with the HSS score at 3 and 6 months postoperatively, and at last follow-up.ResultsOne patient suffered from an incision exudation at 2 weeks postoperatively, and the incision healed after symptomatic treatment. The incisions of other patients healed by first intention. All patients were followed up 7-19 months (mean, 14.8 months). There was no neural injuries, hinge fracture, plate or screw fractures, loosening, or other complications. The WBL was maintained at the postoperative level according to the X-ray examination during the follow-up period. The WBL, HKA, MPTA, and PTSA were all within a satisfactory range after operation. The WBL, HKA, and MPTA were significantly improved when compared with the preoperative measurements (P<0.05). There was no significant difference between preoperative and postoperative PTSA (P>0.05). The differences in postoperative WBL, HKA, MPTA, and correction angle compared with the preoperative designed target values were not significant (P>0.05). The HSS scores were 69.2±4.7, 77.7±4.3, and 88.1±5.4 at 3 and 6 months postoperatively, and last follow-up, respectively. The differences between time points were significant (P<0.05).ConclusionFor patients with medial knee osteoarthritis, the split 3D printing PSI can assist the surgeon in MOWHTO with accurate osteotomy orthopedics and achieve favorable effectiveness.