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Pectus Excavatum Index

Longitudinal diameter of the depression (a)
Measured Value
cm
Transverse diameter of the depression (b)
Measured Value
cm
Depth of the depression (c)
Measured Value
cm
Length of the sternum (A)
Measured Value
cm
Transverse diameter of the thorax (B)
Measured Value
cm
Shortest distance from the sternal angle to the vertebral body (C)
Measured Value
cm
Result:

Calculation Formula

Pectus Excavatum Index F2I = a × b × c / (A × B × C)

Clinical Significance

＞0.30 indicates severe depression;

0.21~0.30 indicates moderate depression;

＜0.2 indicates mild depression

Notes

F2＞0.21 has surgical indications.

References

Research Paper Chen Xiaoping, editor. "Surgery" (Eight-Year Program) [M]. People’s Medical Publishing House, 2010. Research Paper "Pediatrics" (Eight-Year Program) [M]. People’s Medical Publishing House, 2005.
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