Hand and wrist
Stahl's lunate index
0.50-0.56
Radiography (Posteroanterior)
Radiography (Lateral)
a : length of lunate on PA view
b : AP diameter of lunate on lateral view
Stahl's index = a / b
Reference
Berger RA. Hand Surgery. Philadelphia : Lippincott Williams & Wilkins, c2004. (2004).
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