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Case Reports
. 2016 Jul;10(2):47-49.
doi: 10.5704/MOJ.1607.009.

Solitary Osteochondroma of the Tibial Tuberosity Mimicking Osgood-Schlatter Lesion: A Rare Cause of Anterior Knee Pain in Adolescents: A Case Report

G Balaji  1 , P Palaniappan  1 , S Nema  1 , J Menon  1
Affiliations
Case Reports

Solitary Osteochondroma of the Tibial Tuberosity Mimicking Osgood-Schlatter Lesion: A Rare Cause of Anterior Knee Pain in Adolescents: A Case Report

G Balaji et al. Malays Orthop J. 2016 Jul.

Abstract

Osteochondroma arising from the tibial tuberosity is very rare. We report such a case which mimicked OsgoodSchlatter's disease in an adolescent. A 12 years-old boy presented with swelling over his right proximal tibia of one year duration associated with pain in the last three months. Examination revealed a 4 x 2cm bony mass arising from the proximal tibia. Radiographs revealed an osteochondroma of the tibial tuberosity. Computer tomography and magnetic resonance imaging confirmed the continuity of the medulla of the bony mass to that of the parent bone. Excision biopsy was done. At the final follow up, he was asymptomatic and returned back to his daily activities. We present this case for its rarity, challenges involved in diagnosis and the difficulties encountered in planning the surgery because of involvement of the apophysis and extensor mechanism attachment in a skeletally immature boy.

Keywords: Knee tibia; adolescent; exostoses; osteochondroma.

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Figures

Fig. 1
Fig. 1
Radiograph of the right knee lateral view shows a bony mass arising from the tibial tuberosity.
Fig. 2
Fig. 2
Noncontrast sagittal computer tomography image shows bony excrescence arising from the tibial tubercle with cortical and medullary continuity with the underlying bone.
Fig. 3
Fig. 3
Fat-saturated T2 axial section of magnetic resonance imaging shows a well-defined osseous protrusion from the anteromedial aspect of tibial metaphysis underneath the patellar tendon.
Fig. 4
Fig. 4
Histopathology picture with hematoxylin and eosin staining shows osseous tissue with cartilage cap suggestive of osteochondroma.
See this image and copyright information in PMC

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