Traube’s semilunar space
Borders:
- Superiorly: Left 6th rib superiorly
- Laterally: Left midaxillary line or Left anterior axillary line
- Inferiorly: Left costal margin
Method:
- Patient’s position: supine with left arm slightly abducted.
- Percuss: from medial to lateral
Interpretation: Resonance (Normal) and Dullness (Splenomegaly)
- Also: Pleural effusion or mass in stomach may cause dullness in Traube’s space.
Castell’s method
Patient’s position: Supine
Percuss: In the lowest intercostal space in the anterior axillary line (8th or 9th)
Interpretation:
- Resonant percussion note on expiration or full inspiration: normal
- Dull percussion note on full inspiration: splenomegaly
Nixon’s method
Patient’s position: Right lateral decubitus (rationale: spleen comes to lie above colon and stomach).
Percuss: start percussing midway along the left costal margin and proceed in a line perpendicular to left constal margin
Interpretation: Upper limit of dullness >8 cm above costal margin: Splenic enlargement