ABSTRACT
Objective:To analyze imaging diagnosis and differential diagnosis of upper femur aneurysmal bone cyst.Methods: The pre-operation imaging appearances about digital radiography(DR), computerized tomography (CT) and magnetic resonance imaging (MRI) of 46 aneurysmal bone cyst cases confirmed by operation and pathology were retrospectively analyzed, and then these special imaging appearances were gained and analyzed.Results:①CT plain scans showed the irregular expansile lucency shadow in the upper femur with the uneven bone septum image; the complete or incomplete osteosclerosis edge can be found in some parts of lesions; some lesions extend to adjacent soft tissue, and the liquid-liquid level can be found in lesion of 8 cases, and their edge and separated intensity strengthening were visible after signals were enhanced.②MRI plain scans revealed that most lesions showed long T1, T2 signals, the periphery of lesions showed long T1, short T2 signal shadows, and septum image was visible within lesions, and the liquid-liquid level can be found in lesion of 8 cases; some lesions extend to adjacent soft tissue, and their edge and separated intensity strengthening were visible after signals were enhanced.Conclusion: Through combined examination of DR, CT and MRI, the specialty and diagnostic accuracy of aneurysmal bone cyst could be improved, and it was helpful in the differential diagnosis of other upper femur bone tumors.
ABSTRACT
[Objective]To search for a good way for complex total hip arthroplasty(THA) and hip reconstruction.[Method]From February 1995 to June 2007,THA was done 95 hips in 86 patients with good preoperative preparation,full evaluatibn and complete simulation the details occurring at operation.[Result]Eighty one patients were followed up from 6 months to 10 years(average 3.5 years).All patients were measured by Harris score.The preoperative Harris score in the patients ranged from 35 to 50(average 42.1).The postperative score ranged from 70 to 90(average 82.3).Leg length discrepancy ranged from 1 to 12 cm preoperative.(average 4 cm),but from 0 to 5 cm postperative(average 1.5 cm).Two with serious leg length discrepancy,one is 6 cm,the other is 12 cm,after the operation,one is 2 cm,the other is 5 cm.Two had poor incision healing,upper femur split occurred in 3,one with hip prothesis dislocate,nerve injury happened in 2 and two had venous embolism.[Conclusion]Anatomic structure in complex total hip arthroplasty changes so much that it is hard to rebuild and replace a normal hip anatomic structure.Excellent clinical outcome can be achieved with full preparation and evaluation before operation and careful management at opertation.