If you are wondering about the Charlotte Hornets’ injury situation heading into training camp, it pretty much starts and ends at point guard. Starter Kemba Walker has been fully cleared, following off-season knee surgery to repair a torn meniscus. Third-stringer Julyan Stone has a nagging groin injury, but said Monday that shouldn’t impede in the preseason. The real concern is backup Michael Carter-Williams, the Hornets’ primary free-agent signing over the summer. Carter-Williams had platelet-rich plasma (PRP) procedures on both knees over the summer to address patella tears and reduce pain. Carter-Williams was cleared for on-court activity about two weeks ago, but he isn’t cleared for contact drills, as camp opens Tuesday morning at Spectrum Center. Carter-Williams is an important part of the Hornets’ remade second unit, and coach Steve Clifford said he doesn’t have a time projection on when Carter-Williams will be fully cleared.