Carpal navicular fracture
Introduction
Introduction to the scaphoid fracture The wrist bone is divided into two rows, the scaphoid is close to the sputum side, and its shape is like a boat, so its name, but irregular, the back is long and narrow, rough and uneven, forming joints with the tibia. When a fall falls, the palm of the hand touches the ground, and the scaphoid bears the brunt of it. It is pressed between the humerus and the head bone to form a fracture. Because the position of the scaphoid is large, the blood flow is poor, so it is difficult to heal. The scaphoid fracture is more common in young adults. . basic knowledge The proportion of illness: 0.001% Susceptible people: no special people Mode of infection: non-infectious Complications: fracture arthritis traumatic arthritis
Cause
Cause of scaphoid fracture
The disease is often caused by indirect violence, falling into the palm of the hand, the scaphoid bears the brunt, pressed between the humerus and the head bone, the wrist strength dorsiflexion, slight deviation, the back side of the humerus cut off the scaphoid, forming a fracture.
Prevention
Scaphoid fracture prevention
Pay attention to the safety of production and life, and avoid trauma is the key to the prevention and treatment of this disease.
Postoperative doctor's advice is crucial for its prognosis. The time and manner of functional exercise should be told to the patient in detail. The different patients have different personality and psychological factors, and they are unpredictable and overly squeaky. Rejection of the ground is contrary to medical principles, and the prognosis is unpredictable. Only when properly trained under the guidance of a doctor can it have a good effect.
Complication
Complications of scaphoid fracture Complications, fracture arthritis, traumatic arthritis
Because the position of the scaphoid is large, the blood supply is poor, so it is easy to cause delayed fracture healing and advanced nonunion. It can cause arthritis and wrist joint stability. This disease is often accompanied by median nerve compression, so if treatment If it is not timely, it may lead to necrosis of the hand.
Symptom
Symptoms of scaphoid fractures Common symptoms Wrist pain on the thumb side Wrist pain, wrist swelling and palm flexion... Wrist swelling and tenderness
1. Wrist swelling, pain, wrist dysfunction, and tenderness in the snuff pocket.
2. When the patient is in the palm of the hand, the hand is deflected, the thumb and index finger are flexed, and the scaphoid has obvious pain when slamming the metacarpal bone.
Examine
Examination of the scaphoid fracture
The examination of this disease is mainly X-ray examination:
X-ray films need to be photographed in the wrist, lateral position and scaphoid position. They can show fracture lines, sometimes no fractures, and early X-ray films are negative. For suspicious cases, photos should be taken two weeks later. Reexamination, due to the bone absorption after fracture, the fracture line widened and revealed, old fractures, visible fracture line significantly widened, fracture end hardening or cystic changes, which is the performance of bone disconnection, if the proximal segment of bone The block density increases, and the deformation is ischemic necrosis.
Diagnosis
Diagnosis and diagnosis of scaphoid fracture
Clinical examination of the wrist swelling is more obvious, wrist joint deformity, especially with the symptoms of median nerve injury, when the wrist Tinel sign is positive, should pay great attention to the diagnosis of this disease, in addition, the disease should also be associated with the moon bone, the surrounding bone The differentiation of carpal bone axial disintegration, X-ray examination is the main basis for the diagnosis and differential diagnosis of wrist fracture and fracture dislocation. The reading should pay attention to the following points:
1. Whether there is a fracture of the scaphoid bone, whether the fracture of the scaphoid bone is accompanied by disorder of other carpal bones.
2. For example, the scaphoid fracture line is visible in the positive lateral slice of the wrist joint, while the other carpal bones are arranged normally. This is a simple scaphoid fracture.
3, such as the scaphoid fracture at the same time the joint gap disappeared or widened, the carpal bone arrangement disorder, the head bone movement outside the longitudinal axis of the humerus, should be diagnosed as fracture dislocation.
