Ossification of finger joints

Introduction Finger joint bone formation is a symptom of osteoarthritis, also known as finger arthritis, especially the distal interphalangeal joint is most often involved. Swelling pain and tenderness are less pronounced and rarely affect joint activity. The characteristic changes are in the medial and lateral side of the kyphosis, and the bone hyperplasia forms a hard nodule. The nodule located in the distal finger joint is called the Heberden nodule, and the proximal finger joint is called the Bouchard nodule. This nodule develops very slowly. Only a small number of patients will eventually have flexion or exotropia of the distal knuckle. When the first carpometacarpal joint is involved and there is bone hyperplasia, a "square" shaped hand is formed, which is rare in Chinese. Arthritis can be divided into primary and secondary. The primary can not find the cause, and the secondary system develops osteoarthritis based on the original disease. There are many diseases, including congenital joint dysplasia, childhood joint disease, trauma, various metabolic diseases, and various intra-articular inflammation that promotes cartilage collapse. Their common pathway is osteoarthritis.

Cause

A variety of factors cause joint cartilage fibrosis, cleft palate, ulceration, joint disease caused by loss, the cause is not clear, its occurrence is related to age, obesity, inflammation, trauma and genetic factors, its pathological features are articular cartilage degeneration and destruction Subchondral bone sclerosis or cystic changes, joint bone hyperplasia, synovial hyperplasia, joint capsule contracture, ligament relaxation or contracture, muscle atrophy and so on.

an examination

Related inspection

Osteoarticular and soft tissue CT examination of rheumatoid test items erythrocyte sedimentation rate (ESR)

Osteoarthritis of the hand is the most common, and there are many symptoms, which have a certain impact on the patient's fingers, so pay attention to the observation of finger osteoarthritis and timely treatment. The patient usually has a bony hyperplasia on the dorsal side of the fingertip joint at the distal end of the finger, called the Herbden nodule. A similar nodule appears in the proximal interphalangeal joint, called the Bukkad nodule. Due to nodular hyperplasia, the fingers can be skewed to the ulnar or temporal side to form a snake-like finger.

Bone nodules generally have no pain, first for a single, and then gradually increase. Work or cold water on the hands can induce pain or symptoms of red, swollen, painful or tender skin around the nodules. In severe cases, knuckle deformation may occur.

Differential diagnosis

1. Finger joint pain caused by rheumatoid arthritis.

2. Finger joint pain caused by tuberculous arthritis.

3, other connective tissue diseases: systemic red wolf, scleroderma dermatomyositis caused by finger joint pain.

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