Pain relief can occur despite insufficient lesion filling. In most patients, intradiskal and paravertebral leaks of cement had no clinical importance.

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The MR appearance of the hip labrum is varied in asymptomatic volunteers. Intralabral increased signal intensity and absent anterosuperior labra are especially frequent and may represent asymptomatic lesions or normal variations.

Percutaneous osteoplasty with acrylic bone cement was performed in 12 acetabular osteolytic lesions in 11 patients with inoperable metastases (n = 8) and myeloma (n = 3). Complementary radiation therapy was started 15-30 days after injection in each case. Pain diminished within hours to 4 days in nine patients, and walking improved in each patient within 1-5 days. Five patients died during the follow-up period. Clinical improvement was maintained in all but two patients.

Abstract.Objective. The objective of this study was to assess the contribution of magnetic resonance (MR) imaging in the diagnosis and surgical planning of five cases of synovial haemangioma of the knee. Patients and methods. The clinical, radiological and arthroscopic features of five pathologically proven synovial haemangiomas of the knee were retrospectively reviewed. Results. A diagnostic delay, on average of 8 years, had occurred in four of the cases. Plain films were unremarkable, except for one case with arthropathy mimicking haemophilia, Arteriography, performed in three patients, was normal in one. CT, performed in three patients, showed the lesion, but the extent of the latter was better demonstrated with MR imaging. Synovial haemangiomas had a high signal intensity on T2-weighted images, without any extensive mass effect. Fibrofatty septa within the lesion were observed in three cases and muscular and/or fatty invasion in two. Arthroscopy allowed diagnosis of the lesion in two cases, but showed only nonspecific synovitis in another two. Conclusion. This study emphasizes the valuable contribution of MR imaging in the diagnosis and surgical planning of synovial haemangiomas.