3rd extensor compament of wrist contains tendon of: (A) Extensor carpi radialis longus, (B) Extensor carpi radialis brevis, (C) Extensor pollicis longus, (D) Extensor pollicis brevis
Answer is C. -The extensor retinaculum is a thickened band of deep fascia on the back of wrist. the anterior or deep aspect of this retinaculum is divided into 6osseofibrous compaments by 5 septa arising from back of radius and ulna. These tunnels provide passage to the extensor tendons.they are numbered 1 to 6 lateral to medially. the third compament provides passage to EPL tendon.Reference: clinical anatomy for students a problem-solving approach, Neeta v Kulkarni, page no.84