“…Grafting techniques (Lesser 1994, Szentimrey and Fowler 1994, Szentimrey and others 1995, Kirpensteijn and others 1998, Kuntz and others 1998, Morello and others 2001, Seguin and others 2003, Pooya and others 2004) are unsuitable when the extent of the bone deficit exceeds 50 per cent of the total length of the bone, owing to the difficulty in achieving a rigid stabilisation of the graft (Denny and Barr 1991, Simpson and Goldsmid 1994, Li and others 1999, Morello and others 2001). Distraction osteogenesis entails the use of circular, external skeletal fixators (Langley‐Hobbs and others 1996, Lewis and others 1999, Degna and others 2000, Rovesti and others 2002, Rahal and others 2005), but this was inapplicable in our case, given the extent of the bone deficit and lack of distal bone stock. To treat severe bone deficits in the proximal ulna in human patients, transfer of the proximal radius (pro‐ulna radius) has been described (Rydholm 1987, Toni and others 1988, Alnot and others 1999).…”