Maybe I am a fool, but what does anterior knee pain mean? In case it is a none specific terminology I would say that physiotherapist who claims 95% is a miracle worker, because apparently the cause of pain has become irrelevant and only the symptom pain is relevant. This means to me we have to redesign the philosphy of physiotherapy. If the claim would be e.g. in case of anterior knee pain caused by R.A. I use this or that modality of treatment, and I have 95% of succes rate, I would say fair enough. Anyhow it seems to me some form of pre pilot study sataement and should be thought of as so.
Cheers