Hi aspirant,
Both the branches have equal value though it depends which branch are you interested in. Orthopaedicsis the branch of surgery concerned with acute, chronic, traumatic, and overuse injuries and other disorders of the musculoskeletal system. While on the other hand Gynaecology is the branch of surgery which deals with female organs female hormones and other issues. You may choose the field which you feel more suitabke accirding to your interests.