Background: Monteggia fracture-dislocation is rare in children. Various reports attest to its rarity, while recording the many variant of this injury. It is, therefore, easy to miss the diagnosis in the absence of proper clinical examination and radiographs. Case Report : This report highlights two rare variants of Monteggia fracture-dislocation seen in children. The first case was a 12-year old girl alleged to have fallen from a 15- feet tall tree and sustaining a combined type III Monteggia injury with ipsilateral Type II Salter-Harris injury of distal end radius with a metaphyseal fracture of the distal third of the ulna. The second case was a 13-year old who had sustained a closed fracture of atypical Type I Monteggia hybrid lesion, in a road traffic accident. Conclusion: This report highlights the rare variants of Monteggia fracture dislocation which could have been missed without proper clinical examinations and radiographs.
Monteggia's Fracture

OBJECTIVE: To investigate the value of color Doppler ultrasonography (CDUS)-guided percutaneous biopsy in the diagnosis and treatment of bone tumors. METHODS: Ultrasound-guided percutaneous biopsy was performed in 64 patients who was diagnosed by CDUS. Puncture instruments included automatic core biopsy device and 14 to approximately 18G crude needle. All cases were identified by the operation and pathological examination. RESULTS: Tissue-obtained rate was 97% (62/64). Comparing preoperative pathological diagnosis with postoperative pathological diagnosis, we found the diagnostic correct rate was 97%. No complications resulted from this procedure. According to their pathological results, 33 patients were treated with preoperative chemotherapy. The tumor sizes decreased, and 26 patients saved their limbs and had normal functions. CONCLUSION CDUS-guided percutaneous biopsy is safe and quick for the preoperative diagnosis and selecting appropriate surgical procedure for bone tumor treatment.
Adolescent ; Adult ; Aged ; Biopsy, Needle ; Bone Neoplasms ; diagnostic imaging ; pathology ; Child ; Female ; Humans ; Male ; Middle Aged ; Osteosarcoma ; diagnostic imaging ; pathology ; Sensitivity and Specificity ; Ultrasonography, Doppler, Color ; Ultrasonography, Interventional