We report the case of a 15-year-old boy brought to the emergency department after a bike accident, complaining of an isolated left hip pain. The X-rays showed an obturator hip dislocation treated by closed reduction under general anaesthesia, followed by 6 weeks of discharge. The follow-up MRI performed 6 weeks after the trauma showed an avascular femoral head necrosis, for which we performed multiple retrograde femoral head drilling, completed by the injection of autologue stem cells from the iliaq crest. One year later, the patient has no hip pain, no joint limitation, and can practice BMX at a high level again. The purpose of this report is to make the physicians aware of this rare problem that may be damaging for hip function, especially in young people.

Fracture of the talus is uncommon in childhood. We report a case of talar neck fracture that occurred in a 4-year-old girl. We present the radiological findings, the orthopaedic follow-up and the clinical outcome.

We reported a case of 12-years-old girl with isolated pain in of the left wrist. The problem had lasted for 5 weeks after a trauma, and was getting worse. Wrist X-ray was obtained, and no abnormalities were appreciated. The diagnosis after clinical and echo graphic examinations was a De Quervain's tenosynovitis which has never been reported before in pediatric orthopedic literature. After a four-week immobilization and NSAID usage, the patient was pain free. The excessive mobile phone use with active texting probably increases the problem. Repetitive movements and strain injuries of the thumb and wrist can produce musculoskeletal problems of the upper limb as De Quervain's disease. The purpose of this report is to make the physicians aware of this problem that may be common in the future, especially in the young population.

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