Iwasawa M, Hirose T, Matsuo K
Department of Plastic and Reconstructive Surgery, Shinshu University School of Medicine, Matsumoto, Japan.
Plast Reconstr Surg. 1991 Mar;87(3):553-4. doi: 10.1097/00006534-199103000-00026.
Five cases of congenital curved nail of the fourth toe are reported. Patients included four males and one female; four cases were bilateral, and one was unilateral. There were no other significant associated anomalies of the extremities, and only the fourth toes were affected. The features of the deformity are a curved nail and hypoplasia of the soft tissue and bone of the distal phalanx of the fourth toe. This anomaly may be transmitted autosomally and is unique in that it may be of mesodermic origin.
报告了5例先天性第四趾弯曲指甲的病例。患者包括4名男性和1名女性；4例为双侧，1例为单侧。四肢无其他明显相关异常，仅第四趾受累。畸形特征为指甲弯曲以及第四趾远节指骨软组织和骨骼发育不全。这种异常可能通过常染色体遗传，其独特之处在于可能起源于中胚层。
