What Are Proximal Phalanges?

The phalanges are small long bones that are distributed on the fingers. There are 14 phalanxes, two thumbs, and three other four fingers, from proximal to distal, which are the proximal phalanx, the middle phalanx, and the distal phalanx.

The phalanges are small long bones that are distributed on the fingers. There are 14 phalanxes, two thumbs, and three other four fingers, from proximal to distal, which are the proximal phalanx, the middle phalanx, and the distal phalanx.

Chinese name

Phalanx

Foreign name

phalanx of fingers

English also known as

phalange of fingers

Pinyin

Zhi Gu

Overview of the phalanges

Each segment of the phalanx is divided into three parts: the base, the body, and the small head, with the phalanges between the base and the head. Except for the last phalanx, the articular surface of the small head of the other phalanx is in the form of a block and its base of the phalanx of the distal phalanx is called the phalanx. Height can be estimated from the phalanges, and age can be inferred from the ossification.

Phalanx composition

Each segment of the phalanx is also divided into three parts: the base, the body, and the small head. The proximal phalanx refers to the articular surface of the oval depression, which is related to the small head of the metacarpal bone. The articular surface of the small head is in the form of a block called the phalanx, which is related to the base of the phalanges of the middle section. The distal end of the distal phalanx is slightly swollen and rough, and the nail is tuberous. There are 28 phalanxes in humans, of which 14 are in each hand.

X Normal X-ray anatomy of the phalanx

Each hand has five metacarpal bones, all of which are short tubular bones. On the orthophoto, there is a bone marrow cavity inside the metacarpal diaphyseal cortex. The cortex at both ends is very thin. The proximal end of each metacarpal bone is square. The carpal metacarpal joint is formed between the metacarpal floor and the carpal bone. The distal end is spherical with the metacarpal head and the base of the phalanges forming a metacarpophalangeal joint. Each hand has 14 phalanxes, of which 2 are thumbs and 3 are other fingers, all of which are short tubular bones. On the orthophoto, the proximal end of each phalanx is wide and sparse. The distal end of the phalanges (proximal and middle phalanx) are small and small, and the ends of each distal phalanx are clubbed. .

Location of phalanx and metacarpal projection and measurement method

X-ray film is taken with the back and front positions of the two hands, and the hands are placed on the box so that the five fingers are separated. The middle finger axis is consistent with the forearm axis. SPSS software performs statistical processing on the data.