Retinaculum or retinacula may be:

Human anatomy:

• Peroneal retinacula
• Flexor retinaculum of the hand
• Extensor retinaculum of the hand
• Retinaculum musculorum flexorum pedis, in lower leg and foot

Invertebrate anatomy:

• the Retinaculum (moth), in wing
• the Retinaculum (springtail), in springtail abdomen

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