Thank you for your question. As other surgeons have stated it is certainly possible to have a facelift after a previous thread lift procedure.
If you have no depressions or other deformities associated with the thread lift procedure then a facelift possible. Any scar tissue caused by the thread lift may result in a longer operative procedure being required but if there are no deformities caused by the threads you should expect a good facelift result.
Web reference: http://drseckel.com/surgical-procedures/face-lift/