The Glans-Urethral Meatus-Shaft (GMS) Hypospadias Score is based on the anatomic features of hypospadias. It correlates with the severity of the hypospadias and postoperative complications.
Patient selection: hypospadias
Parameters:
(1) glans/urethral plate (G)
(2) meatus (M)
(3) shaft (S)
Parameter
Finding
Points
glans/urethral plate
above average glans size; healthy urethral plate; deeply grooved
1
average glans size; adequate urethral plate; grooved
2
small glans; urethral plate narrow with some fibrosis; flat
3
very small glans; urethral plate indistinct; very narrow or flat
4
meatus
glanular
1
coronal sulcus
2
mid-shaft or distal
3
proximal shaft, penoscrotal, perineal
4
shaft
no chordae
1
mild chordae (< 30°)
2
moderate chordae (30 to 60°)
3
severe chordae (> 60°)
4
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 3
• maximum score: 12
Score
Severity
Urethrocutaneous Fistula
3 to 6
mild
2.4%
7 to 9
moderate
11.1%
10 to 12
severe
22.6%
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