Crooked finger

Introduction An oblique finger refers to a skewed deformity on the side of the finger that can occur on any finger, tilting toward the ankle or ulnar. Most occur at the distal end of the little finger and point to the metatarsal side of the joint. A few occur in the indicator. It has been reported that the incidence rate is between 1% and 19.5%. The distal interphalangeal joint is underdeveloped and has a triangular shape, or the joint surface is oblique or the middle phalanx is skewed. The influence of environmental factors on embryonic development, such as certain drugs, viral infections, trauma, and stimulation of radioactive materials, especially in modern industry, can be teratogenic factors.

Cause

Reasons for skewing:

The cause is unknown, and some cases are genetic. The influence of environmental factors on embryonic development, such as certain drugs, viral infections, trauma, and stimulation of radioactive materials, especially in modern industry, can be teratogenic factors. It can also be normal variation, no dysfunction, and many congenital syndromes also have this finger deformation.

an examination

Related inspection

Hand deformity check blood routine

Check diagnosis of the skewed finger:

1, the deformity can be one of the signs of some syndromes, about 30 kinds of syndromes or more with such malformations. Often combined with and refers to, short finger deformity and so on.

2, no abnormalities in laboratory tests, X-ray examination, to understand the condition of the finger bones and joints.

3, genetic genetic examination: more accurate judgment and discovery of more chromosome number and structural abnormality syndrome, can also find new micro-distortion syndrome. Chromosome examination should be combined with clinical manifestations to arrive at a correct diagnosis.

Differential diagnosis

The skewed finger should be differentially diagnosed with the following symptoms:

1. Bow-shaped finger: arched finger: the finger is bowed to the volar side. The arched finger is one of the early symptoms of Kashin-Beck disease. Kaschin-Beck disease is a kind of endemic deformity osteoarthrosis. It is also called dwarf disease and abacus disease in China. The international medical profession calls this disease Kaschin-Beck disease. Kaschin-Beck disease is mainly distributed in eastern Siberia and northern North Korea. It is widely distributed in China and has been reported in many areas from northeast to southwest. It mainly occurs in the provinces of Hei, Ji, Liao, Shaanxi and Jin, and is mostly distributed in mountainous areas. And in the mid-levels, plains are rare. The disease occurs in all age groups, but it occurs mostly in children and adolescents. Adults rarely develop disease and there is no obvious gender difference.

2. Fingers can not flex and stretch: Finger flexor tenosynovitis can cause fingers to bend and stretch. Mainly manifested as limited pain in the volar side of the metacarpophalangeal joint and restricted finger movement. As the stenosis of the tendon sheath is aggravated and the tendon is swollen after the tendon is compressed, most of the swelling will be difficult or impossible to slide through the narrow tendon sheath, and the finger stays in the extension or flexion position, and the interlocking phenomenon occurs.

3. The interphalangeal joint cannot be flexed: the symptom of the extensor tendon injury is that the interphalangeal joint cannot flex.

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