Hip joint effusion

Introduction Hip effusion is one of the clinical diagnoses of hip synovitis. Hip synovitis is a short-term acute hip pain, swelling, and spasm caused by infection, allergies, trauma, etc., also known as simple hip synovitis, temporary hip slip Membrane inflammation. During the treatment of the synovium, the joints should stop moving and may even brake, in order to reduce the secretion of fluid. However, this method is easy to cause loss of joint function, muscle atrophy, and other lesions of the joint.

Cause

The cause of hip synovitis is inflammation of the synovial membrane of the hip joint, enhanced cell permeability, a large amount of fluid in the joint cavity, resulting in increased pressure in the joint cavity, insufficient blood supply to the femoral head, and easy to become avascular necrosis of the femoral head. The predisposing factors, if treated improperly, can be converted to septic arthritis or avascular necrosis of the femoral head.

an examination

Related inspection

Telescope test Trendelenberg test synovial fluid visual inspection Thomas test infant musculoskeletal examination

Diagnosis of hip synovitis in children: children with tenderness in the groin, hip flexion, restricted adduction, slightly abducted and external rotation of the lower extremities, slow gait, quick walk, obvious lying, lying on the bed The body is tilted and the pelvis is tilted. The length of the legs is not uniform, and the affected limb may be 0.5-2 cm longer than the healthy limb. Active, passive adduction, external augmentation of hip joint pain. Ultrasound can be used to detect effusion and synovial lesions in the hip joint cavity. The X-ray examination of hip synovitis is mainly characterized by the swelling of the hip joint capsule. When the joint fluid is severe, the femoral head is displaced to the outside and the joint space is widened. Magnetic resonance examination showed a small amount of long T1 and long T2 effusion in the hip joint space.

Differential diagnosis

Differential diagnosis

1. Once synovitis: Mainly joint pain, joint swelling is not obvious or accompanied by mild swelling, walking and squeaking, joint pain or discomfort when going upstairs or exerting force.

2, second degree synovitis: joint swelling, pain is not obvious, squat or bending has discomfort, individual patients have muscle atrophy, swelling after excessive exercise. In the morning, the symptoms are lighter and worse in the evening.

3, severe synovitis: joint swelling, pain is more obvious, accompanied by fluid, bone spur, free bone. Bone hyperplasia: joint pain, swelling is obvious, the upper and lower floors are more powerful, stiff and inflexible, and there are creaking sounds during the activity.

4, softening of the tibia: when walking, the joints are sore and weak, and when running, soft legs can not stretch. The pain worsened as you went downstairs and the symptoms disappeared at rest.

5, meniscus injury: legs are easy to walk when walking. Occasionally, the legs suddenly cannot walk, and it feels like something is stuck in the legs. It takes a little rest to return to normal. Generally, people who love sports or people with special occupations have a higher probability of injury. After a long course of illness, it will be accompanied by atrophy of the calf muscles. There are also some special people, synovial inflammation appears in the ankle joint, hip joint (tibia); the symptoms are different from other joints; but the pathology is basically the same. The treatment method is basically the same, only need to choose different acupoints to apply.

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