In the Winquist classification of femoral shaft fractures, a fracture with a large comminuted fragment measuring more than 50% of the cortical circumference, leaving less than 50% cortical contact between proximal and distal fragments, corresponds to:

• A Winquist Type I
• B Winquist Type II
• C Winquist Type IV
• D Winquist Type III ✓

Explanation

The Winquist system grades comminution by remaining cortical contact: Type I has minimal comminution with more than 75% contact, Type II has 50 to 75% contact, Type III has 25 to 50% contact, and Type IV has complete circumferential comminution with no cortical contact. A fragment exceeding half the circumference leaves under 50% contact, which is Type III. Type IV would show no intact cortex bridging the fragments.

Reference: Rockwood and Green's Fractures in Adults, 9th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.