Objective To review the methods of metacarpal and phalange lengthening and to point out the problems at present as well as to predict the trend of development in the field. Methods Domestic and abroad l iterature concerning the methods of metacarpal and phalange lengthening in recent years was reviewed extensively and thoroughly analyzed. Results At present, there are many methods to treat the short finger disabil ity, but the methods of metacarpal and phalange lengthening have an advantage, which include closed osteotomy lengthening, callus-lengthening, and modified Il izarovmethod. Each surgical method has its advantages and l imitations. However, the part of osteotomy, the length and speed, and the postoperative compl ications etc. have been disputed. Conclusion The modified Il izarov method has the advantages of simple operation, minimal invasion, and less compl ications, but the long-term results of each treatment method are unknown and need more further studies.
Mitral regurgitation (MR) is one of the most common valvular heart diseases, imposing a significant economic burden on society. Transcatheter mitral valve replacement (TMVR), as an emerging therapeutic strategy for MR, is expected to fill the gap in the treatment of transcatheter edge-to-edge repair in the future. This article reviews the progress of TMVR clinical research both domestically and internationally in the past two years and analyzes the current challenges faced by TMVR research, such as mitral valve anatomy, device access transition, valve design, and mitral valve calcification. Finally, the prospects of mitral valve product research are discussed.
ObjectiveTo systematically review the predictive factors of new-onset conduction abnormalities(NOCAs) after transcatheter aortic valve replacement (TAVR) in bicuspid aortic valve (BAV) patients. MethodsThe CNKI, VIP, WanFang Data, PubMed, Cochrane Library and EMbase databases were electronically searched to collect the relevant studies on NOCAs after TAVR in patients with BAV from inception to December 5, 2022. Two researchers independently screened the literature, extracted data, and assessed the risk of bias of the included studies. Meta-analysis was then performed by using RevMan 5.4 software. ResultsSix studies involving 758 patients with BAV were included. The results of the meta-analysis showed that age (MD=?1.48, 95%CI ?2.73 to ?0.23, P=0.02), chronic kidney disease (OR=0.14, 95%CI 0.06 to 0.34, P<0.01), preoperative left bundle branch block (LBBB) (OR=2.84, 95%CI 1.11 to 7.23, P=0.03), membranous septum length (MSL) (MD=0.93, 95%CI 0.05 to 1.80, P=0.04), implantation depth (ID) (MD=?2.06, 95%CI ?2.96 to ?1.16, P<0.01), the difference between MSL and ID (MD=3.05, 95%CI 1.92 to 4.18, P<0.01), and ID>MSL (OR=0.27, 95%CI 0.15 to 0.49, P<0.01) could be used as predictors of NOCAs. ConclusionCurrent evidence shows that age, chronic kidney disease, LBBB, MS, ID, the difference between MSL and ID, and ID>MSL could be used as predictors of NOCAs. Due to the limited quantity and quality of included studies, more high-quality studies are required to verify the above conclusion.
Objective To investigate the anatomical evidence of low end-to-side anastomosis of median nerve and ulnar nerve in repair of Dejerine Klumpke type paralysis or high ulnar nerve injury. Methods Twelve formaldehyde anticorrosion specimens (24 sides) and 3 fresh specimens (6 sides) were observed. There were 9 males (18 sides) and 6 females(12 sides). The specimen dissected under the microscope. S-shape incision was made at palmar thenar approaching ulnar side, the profundus nervi ulnaris and superficial branch of ulnar nerve were separated through near end of incision, and the recurrent branch of median nerve and comman digital nerve of the ring finger were separated through far end of incision. The distances from pisiform bone to the start point of the recurrent branch of median nerve, and to the start point of comman digital nerve of the ring finger were measured. The width and thickness of the profundus nervi ulnaris and superficial branch of ulnar nerve, and the recurrent branch of median nerve and comman digital nerve of the ring finger were measured, and the cross-sectional area was calculated. The number of nerve fiber was determined with HE staining and argentaffin staining. Results The crosssectional area and the number of nerve fiber were (2.46 ± 1.03) mm2 and 1 305 ± 239 for the profundus nervi ulnaris, (2.62 ± 1.75) mm2 and 1 634 ± 343 for the recurrent branch of median nerve, (1.60 ± 1.39) mm2 and 1 201 ± 235 for the superficial branch of ulnar nerve, and (2.19 ± 0.89) mm2 and 1 362 ± 162 for the comman digital nerve of the ring finger. There were no significant differences (P gt; 0.05) in the cross-sectional area and the number of nerve fiber between the profundus nervi ulnaris and the recurrent branch of median nerve, between the superficial branch of ulnar nerve and the comman digital nerve of the ring finger; and two factors had a l inear correlation (P lt; 0.05) with correlation coefficients of 0.68, 0.66 and 0.56, 0.36. The distances were (36.98 ± 4.93) mm from pisiform bone to the start point of the recurrent branch of median nerve, and (28.35 ± 6.63) mm to the start point of comman digital nerve of the ring finger. Conclusion Low end-to-side anastomosis of median nerve and ulnar nerve has perfect match in the cross-sectional area and the number of nerve fiber.
The 2020 ACC/AHA Guideline for the Management of Patients with Valvular Heart Disease not only updates aortic valve stenosis, mitral regurgitation, prosthetic valves, infective endocarditis and antithrombotic treatment on the basis of the 2017 guidelines update for valvular heart disease, but also involves aortic valve regurgitation, bicuspid aortic valve, mitral stenosis, tricuspid regurgitation, combined valve disease, pregnancy with valvular disease, valve disease complicated with coronary heart disease, valve disease complicated with non-cardiac surgery and the prospect of comprehensive management of valve disease. It covers a wide range of contents, which are introduced in detail and comprehensively. This paper interprets some highlights and core issues, including the top 10 take-home messages, the severity of valvular heart disease, and the updates in the management of aortic valve stenosis, aortic valve regurgitation, bicuspid aortic valve, mitral stenosis and mitral regurgitation.
