The transient synovitis of the hip, which is also called toxic synovitis, is an inflammation and swelling of the tissues around the hip joint. This condition is called "transient" since it lasts for only a short time. Transient synovitis of the hip is the most common cause of sudden hip pain in children. and it can affect both the right and left sides but never simultaneously.
It can occur between 9 months of life and adolescence, but especially between 3 and 8 years of life, being more common in boys than in girls. It is the most common cause of lameness in children.
- The main symptom is pain in the hip. In some children, hip pain worsens very quickly, although at first the hip pain may be so mild that they do not realize something is wrong.
- When the pain gets bad enough they may have difficulty walking as you may have pain when you move your hips and walk with a limp. Because of the pain, your child may have trouble standing, standing. Some children may have pain in the inner thigh or knee area, rather than around the hip because it is reflected. Many children with this condition want to lie on their back with the knee on their painful side flexed and turned outward, with the foot pointing away from the body. This position can reduce pain.
- Sometimes it is accompanied by a low fever, rarely higher than 38º C.
Symptoms gradually subside over a few days or weeks. The average duration is about 10 days, although the process can take up to 8 weeks. Sometimes synovitis can recur after a while. This occurs in 17% of children.
Doctors do not know the exact cause of transient synovitis of the hip. However, it has been related to any of the following processes:
1. A nonspecific viral infection upper respiratory tract, pharyngitis or otitis media. This association has been found in 70% of the cases.
2. A history of trauma, fall or hit. This association has been found between 17 and 30% of cases.
3. An allergic predisposition. This association has been found in between 16 and 25% of cases.
It is important to see a pediatric orthopedic specialist to rule out other more serious diseases that could cause similar symptoms, such as Perthes disease and hip dysplasia.
The doctor will look at your child's hip to find out what type of movement makes the pain worse. He or she may order a blood test and X-rays to make sure the hip pain is not being caused by another more serious factor.
- The treatment is focused on reducing the inflammation of the hip. Thus rest is recommended until pain subsides and mobility recovers.
- In cases of very severe pain, hospital admission may be indicated to place traction on the limbs by means of pulleys and weight, which relieves hip pain, and to administer prescribed anti-inflammatory medication.
- Exceptionally, if a severe effusion occurs in the hip, a joint fluid aspiration through a puncture or in the operating room.
- Special attention is required if the child has a feveras fever may mean your child has a problem other than hip synovitis. To make sure your child is doing well, it is possible and recommended that your doctor recheck your child 12 to 24 hours after the first visit.
With rest and medicine, your child's hip will probably improve in 3 to 4 days. After the pain goes away, your child can resume normal activities. In most children, there are no complications caused by transient synovitis of the hip. They make a full recovery. To make sure everything is okay, your doctor may want to do another x-ray of your child's hip in about 6 months.
You can read more articles similar to Lameness in children or transient synovitis of the hip, in the category of Orthopedics and on-site traumatology.