| [1] | de Berker DA, Rendall JR. Retronychia⁃proximal ingrowing nail[J]. J Eur Acad Dermatol Venereol, 1999,12(suppl 2): S126. | 
																													
																							| [2] | de Berker DA, Richert B, Duhard E, et al. Retronychia: proximal ingrowing of the nail plate[J]. J Am Acad Dermatol, 2008,58(6):978⁃983. doi: 10.1016/j.jaad.2008.01.013. | 
																													
																							| [3] | Gerard E, Prevezas C, Doutre MS, et al. Risk factors, clinical variants and therapeutic outcome of retronychia: a retrospective study of 18 patients[J]. Eur J Dermatol, 2016,26(4):377⁃381. doi: 10.1684/ejd.2016.2774. | 
																													
																							| [4] | Piraccini BM, Richert B, de Berker DA, et al. Retronychia in children, adolescents, and young adults: a case series[J]. J Am Acad Dermatol, 2014,70(2):388⁃390. doi: 10.1016/j.jaad.2013. 09.029. | 
																													
																							| [5] | Ventura F, Correia O, Duarte AF, et al. Retronychia⁃⁃clinical and pathophysiological aspects[J]. J Eur Acad Dermatol Venereol, 2016,30(1):16⁃19. doi: 10.1111/jdv.13342. | 
																													
																							| [6] | Mello C, Souza M, Noriega LF, et al. Retronychia[J]. An Bras Dermatol, 2018,93(5):707⁃711. doi: 10.1590/abd1806⁃4841.2018 7908. | 
																													
																							| [7] | Wortsman X, Wortsman J, Guerrero R, et al. Anatomical changes in retronychia and onychomadesis detected using ultrasound[J]. Dermatol Surg, 2010,36(10):1615⁃1620. doi: 10.1111/j.1524⁃4725.2010.01694.x. | 
																													
																							| [8] | Fernández J, Reyes⁃Baraona F, Wortsman X. Ultrasonographic criteria for diagnosing unilateral and bilateral retronychia[J]. J Ultrasound Med, 2018,37(5):1201⁃1209. doi: 10.1002/jum.14 464. | 
																													
																							| [9] | Pizarro M, Pieressa N, Wortsman X. Posttraumatic retronychia of the foot with clinical and ultrasound correlation[J]. J Am Podiatr Med Assoc, 2017,107(3):253⁃256. doi: 10.7547/16⁃076. | 
																													
																							| [10] | Cohen PR. Congenital malalignment of the great toenails: case report and literature review[J]. Pediatr Dermatol, 1991,8(1):43⁃45. doi: 10.1111/j.1525⁃1470.1991.tb00839.x. | 
																													
																							| [11] | Baran R. Significance and management of congenital malalignment of the big toenail[J]. Cutis, 1996,58(2):181⁃184. | 
																													
																							| [12] | Guéro S, Guichard S, Fraitag SR. Ligamentary structure of the base of the nail[J]. Surg Radiol Anat, 1994,16(1):47⁃52. doi: 10.1007/BF01627920. | 
																													
																							| [13] | Daniel CR 3rd, Tosti A, Iorizzo M, et al. The disappearing nail bed: a possible outcome of onycholysis[J]. Cutis, 2005,76(5):325⁃327. | 
																													
																							| [14] | Litaiem N, Drissi H, Zeglaoui F, et al. Retronychia of the toenails: a review with emphasis on pathogenesis, new diagnostic and management trends[J]. Arch Dermatol Res, 2019,311(7):505⁃512. doi: 10.1007/s00403⁃019⁃01925⁃w. |