Which AO/OTA fracture classification subtype indicates the worst prognosis for union in a femoral shaft fracture and specifically describes a comminuted, non-contact, segmental pattern?

• A 32-B3
• B 32-A3
• C 32-C1
• D 32-C3 ✓

Explanation

In the AO/OTA classification, segment 32 refers to femoral shaft; Type C (complex) fractures are the most severe. C3 denotes a complex spiral, multifragmentary, or segmental pattern with no cortical contact between main fragments and the highest comminution—the worst for union and requiring the most stable fixation. 32-A3 is simple oblique, B3 is wedge-fragmented, and C1 is complex spiral without fragmentation—all less severe than C3.

Reference: Maheshwari Essential Orthopaedics, 6th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.