Almost certainly. There really seems to be this narrative that nobody working for Manchester United has any form of qualification or something, perhaps because the football team finished 6th in the PL before (not saying these are your words btw!). Simply put, if a hamstring is prone to injury, as in more so than another hamstring, then there would be a reason for it. And an expert sports medical team would be able to see that. Those things are literally the type of thing you conduct a medical for.
Why would a hamstring be more prone to injury? Are the tendons weaker than normal? We’d see that. Does the player have a contributing running motion? We’d pick that up. Even our old football manager, almost 20 years ago, had mentioned concerns about Henderson’s running style potentially leading to injury. I’m sure our medical experts would be able to see if there are any legacy issues. They also get a player’s full medical info sent to them, so by Palace in this case.