The most common and most likely answer to this crossword clue is the 12 letter word ORTHOPAEDICS
I've seen this crossword clue in The Daily Telegraph
O
R
T
H
O
P
A
E
D
I
C
S
More clues leading to the result ORTHOPAEDICS
Buddy explains!
The straight part
We know that "Branch of medicine" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case branch of medicine = orthopaedics.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ORTHOPAEDICS mean?
ORTHOPAEDICS noun- The branch of medicine that deals with the prevention or correction of disorders of the bones and associated muscles and joints