{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,11]],"date-time":"2026-03-11T23:24:17Z","timestamp":1773271457997,"version":"3.50.1"},"reference-count":30,"publisher":"British Editorial Society of Bone & Joint Surgery","issue":"1","license":[{"start":{"date-parts":[[2007,1,1]],"date-time":"2007-01-01T00:00:00Z","timestamp":1167609600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/online.boneandjoint.org.uk\/TDM"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["The Journal of Bone and Joint Surgery. British volume"],"published-print":{"date-parts":[[2007,1]]},"abstract":"<jats:p> The efficacy of \u03b2-tricalcium phosphate (\u03b2-TCP) loaded with bone morphogenetic protein-2 (BMP-2)-gene-modified bone-marrow mesenchymal stem cells (BMSCs) was evaluated for the repair of experimentally-induced osteonecrosis of the femoral head in goats. <\/jats:p><jats:p> Bilateral early-stage osteonecrosis was induced in adult goats three weeks after ligation of the lateral and medial circumflex arteries and delivery of liquid nitrogen into the femoral head. After core decompression, porous \u03b2-TCP loaded with BMP-2 gene- or \u03b2-galactosidase (gal)-gene-transduced BMSCs was implanted into the left and right femoral heads, respectively. At 16 weeks after implantation, there was collapse of the femoral head in the untreated group but not in the BMP-2 or \u03b2-gal groups. The femoral heads in the BMP-2 group had a normal density and surface, while those in the \u03b2-gal group presented with a low density and an irregular surface. Histologically, new bone and fibrous tissue were formed in the macropores of the \u03b2-TCP. Sixteen weeks after implantation, lamellar bone had formed in the BMP-2 group, but there were some empty cavities and residual fibrous tissue in the \u03b2-gal group. The new bone volume in the BMP-2 group was significantly higher than that in the \u03b2-gal group. The maximum compressive strength and Young\u2019s modulus of the repaired tissue in the BMP-2 group were similar to those of normal bone and significantly higher than those in the \u03b2-gal group. <\/jats:p><jats:p> Our findings indicate that porous \u03b2-TCP loaded with BMP-2-gene-transduced BMSCs are capable of repairing early-stage, experimentally-induced osteonecrosis of the femoral head and of restoring its mechanical function. <\/jats:p>","DOI":"10.1302\/0301-620x.89b1.18350","type":"journal-article","created":{"date-parts":[[2007,1,26]],"date-time":"2007-01-26T20:35:05Z","timestamp":1169843705000},"page":"127-129","source":"Crossref","is-referenced-by-count":73,"title":["Treatment of osteonecrosis of the femoral head with hBMP-2-gene-modified tissue-engineered bone in goats"],"prefix":"10.1302","volume":"89-B","author":[{"given":"T. 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H.","family":"Xie","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Shanghai Ninth People\u2019s Hospital, Shanghai Jiao Tong, University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, Republic of China."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Y. Z.","family":"Xie","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Shanghai Ninth People\u2019s Hospital, Shanghai Jiao Tong, University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, Republic of China."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K. R.","family":"Dai","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Shanghai Ninth People\u2019s Hospital, Shanghai Jiao Tong, University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, Republic of China."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J. 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