Stocker and Heifetz developed a classification scheme to describe the pattern of lower limb bone abnormalities seen in patients with sirenomelia.
Type |
Femur |
Tibia |
Fibula |
Description |
I |
2 |
2 |
2 |
all bones present |
II |
2 |
2 |
1 |
single fibula (fused) |
III |
2 |
2 |
0 |
fibulae absent |
IV |
partially fused |
NA |
fused |
femurs partially fused; fibulae fused |
V |
partially fused |
NA |
not fused |
partially fused femurs |
VI |
1 |
1 |
NA |
single femur, single tibia |
VII |
1 |
0 |
NA |
single femur, tibia absent |
where:
• At least 1 femur always seems to be present.
Purpose: To classify a patient with sirenomelia using the limb classification scheme of Stocker and Heifetz.
Specialty: Surgery, orthopedic
Objective: clinical diagnosis, including family history for genetics, severity, prognosis, stage
ICD-10: Q87.2,