{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,20]],"date-time":"2026-05-20T03:12:03Z","timestamp":1779246723108,"version":"3.51.4"},"reference-count":19,"publisher":"BMJ","issue":"8","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2019,7,20]]},"published-print":{"date-parts":[[2019,8]]},"abstract":"<jats:p>In postcollapse hip avascular necrosis (AVN), the femoral head cannot be salvaged, necessitating total hip replacement. We report a case of a 39-year-old woman who developed idiopathic femoral head AVN with marked symptoms and radiological evidence of articular surface collapse. We treated her with core decompression combined with the \u2018diamond concept\u2019 (implantation of bone marrow concentrate, a growth factor and bone graft substitute) and distracted the hip joint with external fixator. Four years postoperatively the articular surface has been restored and the patient reports excellent quality of life. Hip arthrodiastasis with core decompression and \u2018diamond concept\u2019 regeneration could be considered a treatment option in advanced AVN of the femoral head.<\/jats:p>","DOI":"10.1136\/bcr-2019-231081","type":"journal-article","created":{"date-parts":[[2019,8,14]],"date-time":"2019-08-14T07:17:18Z","timestamp":1565767038000},"page":"e231081","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":5,"title":["Hip arthrodiastasis combined with core decompression and diamond concept for postcollapse femoral head avascular necrosis"],"prefix":"10.1136","volume":"12","author":[{"given":"Ioannis V","family":"Papachristos","sequence":"first","affiliation":[{"name":"Leeds General Infirmary, Leeds Teaching Hospitals NHS Trust, Leeds, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"James","family":"Rankine","sequence":"additional","affiliation":[{"name":"Leeds General Infirmary, Leeds Teaching Hospitals NHS Trust, Leeds, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter V","family":"Giannoudis","sequence":"additional","affiliation":[{"name":"University of Leeds, Leeds Teaching Hospitals NHS Trust, Leeds, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2019,8,13]]},"reference":[{"key":"2025082712322752000_12.8.e231081.1","doi-asserted-by":"crossref","first-page":"349","DOI":"10.1016\/j.jcot.2018.05.014","article-title":"Autologous stem cell implantation with core decompression for avascular necrosis of the femoral head","volume":"9","author":"Talathi","year":"2018","journal-title":"J Clin Orthop Trauma"},{"key":"2025082712322752000_12.8.e231081.2","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1302\/0301-620X.67B1.3155745","article-title":"Idiopathic bone necrosis of the femoral head. 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