extensor tendon injury
Introduction
Introduction to extensor tendon injury The tendon injury of the hand is mostly open, with more cuts, often with neurovascular injury or bone and joint damage, and can also cause closed laceration. After the tendon is broken, the corresponding joint loses its function. For example, the shallow flexor tendon rupture refers to the proximal interphalangeal joint can not flex; the deep flexor tendon rupture, the distal interphalangeal joint can not flex; the deep and shallow flexor tendon rupture, the distal and proximal interphalangeal joints can not flex. Since the intramuscular muscle is still intact, the flexion of the metacarpophalangeal joint is not affected. The different parts of the extensor tendon are broken, and the corresponding joints cannot be stretched and deformed. basic knowledge The proportion of sickness: 0.00251% Susceptible people: no specific population Mode of infection: non-infectious Complications: joint dislocation
Cause
Causes of tendon injury
The injury factors of this disease are more common in sharp cutting injury, electric saw injury, sudden injury caused by sudden injury, crush injury, etc., often with neurovascular injury or bone and joint injury, can also occur closed laceration.
Prevention
Extensor tendon injury prevention
The disease is mainly caused by traumatic factors, so pay attention to production safety, do a good job of occupational protection, prevent wrist trauma, is the key to the prevention and treatment of this disease.
Complication
Extensor tendon injury complications Complications, joint dislocation
All kinds of injuries of this disease can be combined with joint capsule injury, and can also be combined with extensor fracture and avulsion fracture and joint dislocation. Especially after the two kinds of injuries are common, the typical signs after injury are clubbing, the end of the extension can not, sometimes see The interphalangeal joint is overextended.
Symptom
Extensor finger tendon injury symptoms Common symptoms Tendon rupture interphalangeal joints can not flex knuckle pad muscles completely broken tendon endarthritis tendon adhesion muscle bruises muscle contusion finger slant
The clinical manifestations of this disease are mainly after the tendon rupture, the corresponding joint loses its active function.
1, refers to the shallow flexor tendon rupture corresponding to the proximal interphalangeal joint can not flex;
2, refers to deep flexor tendon rupture, manifested as the distal interphalangeal joint can not flex;
3, refers to the deep and shallow flexor tendon rupture, the distal and proximal interphalangeal joints can not flex, because the internal muscles are still intact, the metacarpophalangeal joint flexion is not affected;
4. The different parts of the extensor tendon are broken, and the corresponding joints cannot be stretched, and deformities may occur.
Examine
Examination of tendon injury
This disease is mostly caused by sharp cutting injury, electric sawing, etc., for the traumatic factors caused by the disease, easy to diagnose, no other auxiliary examination is required, for the situation caused by closed injury, physical examination is required, according to Characteristic clinical manifestations can be diagnosed without other tests, but special attention should be paid to patients diagnosed with extensor tendon injury in area I. Regardless of fresh or old injuries, X-ray examination of the affected finger should be performed before treatment. No bone joint damage.
Diagnosis
Diagnosis and differentiation of tendon injury
The disease can be diagnosed based on its characteristic clinical and simple physical examination, such as joint function examination of the affected area, without the need for other differential diagnosis.
