Proto-Altaic: *sajk`V
Meaning: knucklebone
Russian meaning: бабка, щиколотка
Comments: Дыбо 1993. A Turk.-Tung. isogloss. Not quite reliable because of poor attestation in TM. Note, however, that PM *sigaji 'knucklebone' would be a good match - if it were not derived (or secondarily contaminated?) from *siɣa, see under PA *sìŋù.