Tumour and tumour-like lesions of the patella – a multicentre experience
Fifty-nine cases of lesions presenting in the patella were identified after review of the databases of four European bone tumour registries. Of the 59 cases, 46% were non neoplastic, 39% were benign and 15% were malignant. The commonest benign neoplasm was giant cell tumour (GCT) (11 cases). Younger patients were more likely to have a benign neoplasm. Lesions in patients less than 40 years of age included giant cell tumour, chondroblastoma, aneurysmal bone cyst (ABC), osteomyelitis, osteoid osteoma and solitary bone cyst. In patients older than 40 years, the following were common lesions: intra-osseous gout, metastasis and intra-osseous ganglion. Expansion of the patella with thinning of cortex was seen more commonly in GCT and brown tumour in hyperparathyroidism. There was associated soft tissue extension in gout and malignant lesions.
KeywordsPatella Patellar tumours Bone tumours
- 1.Unni KK (1996) Dahlin’s bone tumours: General aspects and data on 11,087 cases, 5th edn. Lippincott-RavenGoogle Scholar
- 11.Chaudhary D, Bhatia N, Ahmed A, Chopra RK, Malik AC, Singh AK, Rao KS (2000) Unicameral bone cyst of the patella. Orthopaedics 23:1285–1286Google Scholar
- 17.Kobayashi K, Deie M, Okuhara A, Adachi N, Yasumoto M, Ochi M (2005) Tophaceous gout in the bipartite patella with intra-osseous and intra-articular lesions: a case report. J Orthop Surg (Hong Kong) 13:199–202Google Scholar
- 23.O’Mara JW Jr, Keeling J, Montgomery EA, Aaron AD (2000) Primary lesions of the patella. Orthopedics 23:328,348,370,376–7Google Scholar
- 29.Waris WF, Rubin BD, Fielding JW (1978) Aneurysmal bone cyst of the patella. A case report. J Bone Joint Surg Am 60:711Google Scholar