The midline lumbosacral area, the sacroiliac joint region, the posterosuperior iliac spine, the high iliac crest area, and the low midline sacrococcygeal region are all included in the back.

• 腰背部包括腰骶中线区、骶髂关节区域、髂部后上棘、髂骨嵴以上范围和骶尾部。