Twenty patients fitted with failed metal-on-metal hip implants are suing the manufacturer over damage, that has, in some cases, led to life-long disability.

Lawyers acting are acting for a group of 20 New Zealand claimants taking action against multinational surgical manufacturer DePuy International.

The statement of claim, filed with the High Court, seeks compensation from DePuy Limited for the damage, including metal poisoning, and also for financial losses.

Lawyer James Elliott, who suffered complications from his own implant, says they've ruined people's lives, with some unable to work.

Lawyers acting for the group are seeking others with faulty hip replacements to join the legal action.