The aim of our study is:- 1)To briefly review the lesions involving cortex of tibia 2)To narrow down the differential diagnoses by separating entities which destroy and those which cause proliferation of the cortical bone on the basis of radiographs.

Shin pain is acommoncausefor which patients presentto the clinicians. The cause for shin pain in may cases is a lesion arising from the cortex of the tibia. As a rule, a plain radiograph of the limb should be obtained for characterizing the cortical lesion; later, if warranted, cross-sectional imaging may be done. Although the lesions ofcortex of tibia are encountered frequently in radiology,itis difficult tonarrow the list of differential diagnoses, especially with radiographs only.Hence, we classifylesions of the tibia into those thatdestroy thecortex and those...

The commonly occuring lesions of the tibial cortex, which cause destruction, include:- Non-ossifying fibroma[NOF] -NOF is a well-defined lytic lesion arising eccentrically from the metaphysis -Usually seenin thefirst twodecades of life. It is estimated that in about 20% of asymptomatic population in this group, NOF can be detected. -More common in males as compared to females with a ratio of 2:1 -If the lesion is less than 2 cm in size, it is referred to as fibrous cortical defect -Non-ossifying fibromas[ie >2 cm], may grow...

Thus, separating cortical lesions of tibia into those that cause cortical destruction and those that cause proliferation helps us reach a radiological diagnosis easily.

.

1)Cortical Lesions of the Tibia, Catherine N. Petchprapa, https://doi.org/10.1148/rg.231015088 2)Tibial cortical lesions: A multimodality pictorial review, PA Tyler, https://doi.org/10.1016/j.ejrad.2014.09.006