Tibial tarsal tendon sheaths

Looks like

The lubricated sleeves of the three tendons curving behind the inner ankle bone.

What it does

Let the tendons that point the foot and curl the toes glide around the inner ankle.

Keeping it well

The tarsal tunnel here also carries the tibial nerve; swelling can press on it, causing burning in the sole.

Its parts

• Tendon sheath of flexor digitorum longus
• Tendon sheath of flexor hallucis longus
• Tendon sheath of tibialis posterior muscle

Related conditions

• Buerger's disease (thromboangiitis obliterans)
• Chronic venous insufficiency
• Clubfoot (talipes equinovarus)
• Flat feet (pes planus)
• Ganglion cyst
• Gout
• Haemophilia & bleeding disorders
• Hammer toe and claw toe
• Lyme disease
• Lymphatic filariasis (elephantiasis)
• Lymphoedema
• Marfan syndrome & connective tissue disorders
• Morton's neuroma
• Osteoarthritis
• Psoriatic arthritis
• Restless legs syndrome
• Rheumatic fever & rheumatic heart disease
• Rheumatoid arthritis
• Systemic lupus erythematosus
• Temporomandibular joint disorder
• Varicose veins
• Venomous snakebite