Futomomo: The Classic Bent-Leg Tie in Shibari

Futomomo (太腿, “thick thigh”) is one of the most iconic and widely practiced Shibari ties. Recognizable by its bent-leg position, the futomomo binds the lower leg to the thigh, creating a compact, controlled shape that is both visually expressive and highly functional. It is a cornerstone tie for immobilization, floor work, and suspension when performed by trained riggers.

What Is a Futomomo?

A futomomo is a bent-leg tie where the calf is secured to the thigh, typically with the knee folded and the foot drawn upward. This tie:

• Restricts leg movement significantly
• Creates strong, reliable attachment points
• Produces a sculptural, folded body shape

Unlike thigh-only ties, the futomomo actively involves the knee joint, which increases both its effectiveness and the need for precision.

Structure and Technique

A proper futomomo emphasizes support over compression. Key elements include:

• A supportive wrap above the knee to cradle the joint
• Even tension across thigh and calf wraps
• Rope placement that avoids pinching behind the knee

Most futomomo variations include:

• A thigh wrap for stability
• A calf wrap for connection
• One or more cinches to lock the structure together

Clean rope handling is essential, as uneven tension can quickly cause discomfort or risk.

Why Futomomo Is So Popular

The futomomo is favored because it offers:

• Strong immobilization without torso restriction
• Clear lines and dramatic body shapes
• Reliable anchors for suspension or floor scenes
• A sense of containment and surrender

It is often used in combination with hip harnesses, chest harnesses, or additional leg ties.

Sensation and Experience

For the person being tied, a futomomo can feel:

• Deeply restraining and grounding
• Intimate due to the folded posture
• Vulnerable yet supported

Because the leg is held in place, awareness of circulation and sensation changes is especially important.

Safety Considerations

Futomomo is considered a higher-risk tie compared to thigh-only bindings and requires proper education:

• Never place rope directly behind the knee
• Watch closely for numbness, tingling, or color changes
• Avoid prolonged ties without regular checks
• Release immediately if discomfort or nerve symptoms appear

This tie should only be used by those who understand anatomy, rope tension, and risk management.

Variations and Applications

Common futomomo variations include:

• Single futomomo for asymmetrical restraint
• Double futomomo for full leg immobilization
• Open futomomo with more space at the knee
• Suspension futomomo (advanced practice only)

Each variation changes both the visual aesthetic and the physical experience.

Why Futomomo Endures

The futomomo endures because it perfectly captures the dual nature of Shibari: beauty and control, vulnerability and care. When tied with intention and skill, it transforms a simple bent leg into a powerful expression of trust and craft.

Mastery of futomomo opens the door to deeper rope language—and reinforces the responsibility that comes with it.