Among the three cuneiform bones of the foot, which one is the first to show a radiologically visible ossification centre?
- A Medial cuneiform
- B Intermediate cuneiform
- C Lateral cuneiform ✓
- D All three appear simultaneously
Explanation
The lateral cuneiform ossifies first, at approximately the first year of life, followed by the medial cuneiform in the second to third year, and finally the intermediate cuneiform in the third to fourth year. This medial to lateral lag in the last two bones is a favourite examination point because students intuitively expect the larger medial cuneiform to lead. Knowing this order allows rough age assignment from a paediatric foot radiograph when combined with the timing of the navicular centre.
Reference: Cunningham's Manual of Practical Anatomy, Volume 1: Upper and Lower Limbs, 16th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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