Laser therapy for knee pain?

Pier Francesco Parra is an Italian physician getting some publicity from tennis players lining up outside his hotel room to receive treatment:

Nor do they have one for a magician, which is one of Parra’s nicknames. No matter. Open players already recognize him because of his three-laser healing machine. The mysterious device makes him the tennis version of Dr. James Andrews, the much-sought-after surgeon who treats baseball’s broken pitchers in Birmingham, Ala.