Oscar Pistorius' murder trial has heard the athlete's "ability to ward off danger is impaired" when he is not wearing his prosthesis.
Dr Versfeld told the high court in Pretoria, "While I would expect that he could carry a cricket bat ... I don't believe that he would be able to strike anything with that cricket bat with any type of force ... because he would overbalance and fall down."
ITV News Africa Correspondent Rohit Kachroo reports:
Versfeld is supporting the defence account of a vulnerable man. He is standing at he witness stands - occasionally glancing at his notes