Agarwal Pawan, Thatte M R, Saraf Mansi, Bobba Rajesh, Sharma Dhananjaya, Dhakar Jagmoah Singh
Department of Plastic Surgery, Netaji Subhash Chandra Bose Government Medical College, Jabalpur, Madhya Pradesh, India.
Department of Plastic Surgery, Bombay Hospital Mumbai, Mumbai, Maharashtra, India.
Indian J Plast Surg. 2024 Jun 25;57(4):306-310. doi: 10.1055/s-0044-1787871. eCollection 2024 Aug.
This article aims to establish the relative thumb length in comparison to the index finger in central Indian adults. Five hundred normal adult hands (1,000 thumbs), 316 men and 184 women, mean age 30 years, were included in the study. The relative length of the thumb was measured using the length of the proximal phalanx of the index finger (thumb-proximal phalanx index) and the distance between the proximal digital crease and proximal interphalangeal crease of the index finger (thumb-digital crease index). The tip of a normal adducted thumb extends to 69% of the length of the proximal phalanx of the index finger and 38% of the distance between the two proximal creases of the index finger. The tip of a normal adducted thumb extends to 68% for male and 69% for female of the length of the proximal phalanx of the index finger. For the dominant hand the tip of a normal adducted thumb extends to 68%, while for nondominant hand it reaches 71% of the length of the proximal phalanx of the index finger. The difference between the laterality, gender, and hand dominance was not statistically significant. The tip of a normal adducted thumb extends to 69% of the length of the proximal phalanx of the index finger and 38% of the distance between the two proximal creases of the index finger. Relative normal thumb length is independent of gender, laterality, or hand dominance.
本文旨在确定印度中部成年人中拇指相对于食指的相对长度。 本研究纳入了500例正常成年人的手（1000根拇指），其中男性316例，女性184例，平均年龄30岁。拇指的相对长度通过食指近节指骨的长度（拇指-近节指骨指数）以及食指近端指横纹与近端指间横纹之间的距离（拇指-指横纹指数）来测量。 正常内收拇指的指尖延伸至食指近节指骨长度的69%以及食指两条近端横纹之间距离的38%。正常内收拇指的指尖延伸至食指近节指骨长度的比例，男性为68%，女性为69%。对于优势手，正常内收拇指的指尖延伸至食指近节指骨长度的68%，而非优势手则达到71%。侧别、性别和手的优势之间的差异无统计学意义。 正常内收拇指的指尖延伸至食指近节指骨长度的69%以及食指两条近端横纹之间距离的38%。相对正常的拇指长度与性别、侧别或手的优势无关。
