Orthopedic surgery or orthopedics (alternatively spelled orthopaedic surgery and orthopaedics) is the branch of surgery concerned with conditions involving the musculoskeletal system.

The range of treatments provided by orthopedists is extensive. They include procedures such as traction , amputation , hand reconstruction, spinal fusion , and joint replacements. They also treat strains and sprains, broken bones, and dislocations. Some specific procedures performed by orthopedic surgeons are arthroplasty , arthroscopic surgery , bone grafting , fasciotomy , fracture repair , kneecap removal , and traction.