@article{oai:repo.qst.go.jp:00049121,
 author = {N, Sumiyoshi and T, Torigoe and K, Maezawa and Y, Narushima and Y, Maruyama and K, Kaneko and Imai, Reiko and Kamada, Tadashi and Imai, Reiko and Kamada, Tadashi},
 issue = {2},
 journal = {Journal of Orthopaedic Science},
 month = {Aug},
 note = {Chondrosarcoma is refractory to chemotherapy or radiotherapy due to its slow progression. Consequently, a wide en bloc excision is thought to be the only curative treatment for intermediate and high-grade lesions [1]. In comparison to X-ray beams, carbon ion beams offer a better dose distribution, having a higher physical selectivity, Bragg peak and relative biological effectiveness. Carbon ion radiotherapy (CIRT) has recently been introduced as a therapeutic option in cases of chondrosarcoma in which a wide en bloc excision is not possible. Although this is a new treatment and it is not yet available in most countries, a few cases in which femoral neck fractures occurred secondary to CIRT have already been reported in the literature [2,3,11]. We herein present the case of a
patient with pelvic chondrosarcoma who was treated with CIRT, in whom a femoral neck fracture developed with subsequent central migration of the rtificial femoral head. Revision surgery, which consisted of total hip rthroplasty with allo- and auto-bone grafts and a KT plate, was successfully performed to treat the complications that were seen in the present case.},
 pages = {424--429},
 title = {Femoral neck fracture and central migration of the artificial femoral head after carbon ion radiotherapy for chondrosarcoma in the pelvis},
 volume = {23},
 year = {2016}
}