Spinopelvic parameters

• PI = SS + PT
• PI תמיד קבוע
  • if ↑PT → ↓SS;
  • if ↓PT → ↑SS;

• Pelvic tilt (PT) - angle b/w vertical reference line (femoral head) & midpoint of sacral end plate 
• Sacral slope (SS) - angle b/w sacral end plate & horizontal reference line 
• Pelvic incidence (PI) - angle b/w perpendicular line of the sacral end plate & center of femoral head

• PI = SS + PT
• PI תמיד קבוע
  • if ↑PT → ↓SS;
  • if ↓PT → ↑SS;

• PI = SS + PT
• PI תמיד קבוע
  • if ↑PT → ↓SS;
  • if ↓PT → ↑SS;

• PI = SS + PT
• PI תמיד קבוע
  • if ↑PT → ↓SS;
  • if ↓PT → ↑SS;

• PI = SS + PT
• PI תמיד קבוע
  • if ↑PT → ↓SS;
  • if ↓PT → ↑SS;

• PI = SS + PT
• PI תמיד קבוע
  • if ↑PT → ↓SS;
  • if ↓PT → ↑SS;

• PI = SS + PT
• PI תמיד קבוע
  • if ↑PT → ↓SS;
  • if ↓PT → ↑SS;

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