Attempts to grow replacement bone by placing stem cells in a culture chamber of the desired shape have not been very successful, with the cells often dying or producing only weak bone.

以前通过将干细胞置于特定性状的培养腔内，以培育出再造骨骼的尝试并不太成功，细胞往往会死亡，或者仅培育出很脆弱的骨骼。

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In one case a bone from New York was used in a hip replacement operation at the Royal National Orthopaedic Hospital, in Stanmore, Middlesex.

BBC: NEWS | UK | Wales | 'Stolen bones' used in Welsh ops

Newport Gwent Dragons lock Luke Charteris is also a replacement after flying in to replace Davies in the squad after the Cardiff Blue chipped a bone in his neck against the Canucks.

BBC: Peel returns as Wales take on USA

He was diagnosed with a proximal humerus fracture -- the humerus being the upper bone of the arm -- and as a result underwent what the Supreme Court said was reverse shoulder replacement surgery Saturday morning.

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