Could this be a 'Yeti's Finger' ?
Primatologist Ian Redmond examines an anatomical specimen labelled "Yeti's finger" which has lain overlooked in the Royal College of Surgeons Hunterian Museum for decades.
The Radio 4 documentary Yeti's Finger was broadcast on Tuesday 27 December 2011 at 1100 GMT and is available online at the above link.