While there have been a few high profile injuries — such as Philadelphia 76ers guard Ben Simmons’ partial dislocation of his left knee and Orlando Magic forward Jonathan Isaac’s torn ACL — players so far have settled into the groove without a spike in injuries, subverting the expectations of some health experts. “I think, up to this point, I would have imagined more,” Dr. Michael Terry, an orthopedic surgeon who specializes in sports medicine at Northwestern Memorial Hospital, said. “That’s a testament to these guys really working to maintain their fitness to be ready, but I would’ve expected more than we’ve seen. It’s still early.”