The literature article entitled, "subsidence and perioperative periprosthetic fractures using collarless hydroxyapatite-coated stem for displaced femoral neck fractures according to dorr type" written by joo-hyoun song, woo-lam jo, kee-haeng lee, yoon-joo cho, joonyoung park and seungbae oh published by journal of orthopaedic surgery accepted by publisher 31 august 2019.The article's purpose was to determine subsidence rate and incidence of perioperative periprosthetic fracture (ppf) of uncemented collarless corail stems for displaced femoral neck fractures according to dorr type.Data was compiled from 66 (dorr type a), 107 (dorr type b), and 49 (dorr type c) cases.Early subsidence is noted in 8 cases but all were well fixed within 2 years.Depuy product: corail stem.Adverse events: postoperative fractures (undetected intraoperatively and treated with non weight bearing progressing to partial weight bearing) intraoperative fractures (treated with wiring).
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