orthopedic surgery / orthopedics: the medical specialty concerned with diagnosing and surgically treating bones, joints, and muscles.
昨日、膝を捻って整形外科で検査を受けた。
Yesterday I twisted my knee and had it examined at orthopedics.
整形外科では骨折や靭帯損傷の手術を行うことが多い。
Orthopedics often performs surgeries for fractures and ligament injuries.
スポーツ選手はケガをしたら整形外科を受診することが多い。
Athletes often visit orthopedics when they are injured.
colloquially used to mean plastic/cosmetic surgery (though technically handled by plastic surgery or cosmetic surgery specialties).
彼女は整形外科で鼻の手術を受けたと公表した。
She announced that she had undergone nasal surgery at a cosmetic clinic.
『整形外科に行ってきた』と言ったが、実際は美容目的だったらしい。
She said she went to 'seikei-geka', but it seems it was actually for cosmetic reasons.