All are TRUE about clavicle, except-: (A) No treatment required for fracture but rest, (B) Breaks at mid point, (C) First bone to ossify, (D) Ossifies in membrane
Answer is A. Clavicle fracture treatment includes immobilization in sling or figure of eight bandages.
Option `b' requires specific mention here because different books have a different opinion regarding the most common site of the fracture.

"The most common site is at the junction of the middle and outermost thirds" -- Adams's
"The junction of the middle and outer third of the clavicle is the commonest site". -- Maheshwari
"Fractures of midshaft account for 69-12 percent of all clavicle fractures". -- Apley's
"The mid-clavicle (middle third) therefore is the most common site of fracture". -- Rockwood
"Middle third of clavicle is the most common site of fracture". Atlas of musculoskeletal imaging.
"Eighty-five percent of the fracture clavicle occurs at the junction of the middle and outer third". Ebnezar. "Although a fracture can occur anywhere along the clavicle, the most common site (80% of cases) is reported to be between medial 2/3rd and lateral 1/3rd of the bone". --
"The middle clavicle is the most common site of the fracture, representing 75-80% of all clavicle fractures". Essentials of skeletal radiology.
"Eighty percent of the fractured clavicle occurs at the junction of middle and outer third" -- Essential of orthopaedics


Though some textbooks have mentioned the middle third as the most common site for clavicle fracture, most textbooks have mentioned the junction of medial 2/3rd and lateral 1/3rd as the commonest site of the fracture.
According to me the most common site of clavicle fracture is at the junction of medial 2/3rd and lateral 1/3rd.