Hip cold is a relatively common condition that can affect children between 3 and 10 years old. In medical terms, we speak of transient acute synovitis of the hip. It is the leading cause of lameness in children of this age group. Boys are more frequently affected than girls.
The symptomatology is quite typical and recognizable. The pain, located at the hip or knee, occurs suddenly, most often in the morning when waking up. The child has difficulty walking and starts to limp. This is often the only symptom presented by the child.
Hip cold is a benign pathology that heals spontaneously in five to eight days. There is therefore no curative treatment to put in place. However, there is a risk of relapse.
When the lameness persists beyond eight days, or the symptoms are atypical, additional tests must be prescribed in order to possibly diagnose another pathology.
The cause of the hip cold is not known. One can simply observe that the disorder occurs seasonally, in winter and spring, and in the aftermath of a viral infection (ENT or others). Logically, it was supposed that a virus could be responsible for the hip cold. But, to date, no research has found a virus in the joint effusion. This hypothesis has not yet been confirmed.