Attention, all first fives in New Zealand - protect your greatest assets from now until September and you could find yourself on a plane to the United Kingdom for the Rugby World Cup.
It seems that the two knobbly protrusions known as your knees are precious assets in rugby.
The knee is one of the largest and most complex joints in the body. There are four bones that congregate around this joint, along with tendons and ligaments that weave in, out and around to provide stability and strength.
Add to the mix, two pieces of cartilage and numerous fluid-filled sacs (bursae) and you are looking at one mighty important but also vulnerable piece of anatomy.
First fives, in particular, are finding these joints are easily exposed, perhaps because they have to do so much with their knees under pressure - kicking, accelerating, running sideways to put others and the ball in space, sidestepping, getting tackled, and tackling.
While attempting to change direction quickly Aaron Cruden ruptured the anterior cruciate ligament (ACL), which is largely responsible for stabilising the knee.
He is understandably gutted about what this means for his aspirations to go to the World Cup in September-October, when most people who have done their ACL know it takes six months or more to recover from one ligament snapping.
Cruden has less than six months to recover from surgery and rehabilitate the knee to a point where he can play with confidence and conviction with the best in the world.
A big ask, but in true Cruden style he is remaining focused and hopeful. Cruden has had his fair share of miracles and good luck. Four years ago, he benefited from a series of ''bad luck'' moments for other All Black first fives when Dan Carter and Colin Slade sustained injuries.
His role in the All Black journey to the World Cup final was significant but short-lived when once again a knee injury meant he had to exit stage left and let Stephen Donald take the glory.
Flash forward to the present, and are we panicking yet about who will deliver in the No 10 jersey in September?
We still have Dan Carter (although he isn't in the best of form yet and must be getting frustrated donning the No 12 jersey for the Crusaders), Beauden Barrett (he has just sustained a knee injury that has him out for four weeks), and, last but not least, dependable Colin Slade, who has been the in-form first five this Super rugby season (although his head and heart may already be in France and the Crusaders are still not firing under his direction).
Surely Cruden's injury has provided a reality check for the All Black coaching camp and they are busy working their way through a series of worst-case scenarios.
If history repeats itself, they better have about six first fives on stand-by and keeping fit so that they can quickly jump on a plane and fit into their skin-tight jerseys and the All Black team at the drop of a fishing hat.
If the old boys brigade (Carter, Slade and ''new'' old boy Barrett) can't deliver the goods (due to injury) then we have several new boy scouts chomping at the bit to get their hands on a ticket and black jersey.
Lima Sopoaga is an all-round performer for the Highlanders, and is the most consistent kicker in New Zealand- a skill we all know comes in handy during World Cup games.
Ihaia West had a blinder for the Blues off the bench against the Force which suggests he has the goods and now just needs to work on his consistency. Otere Black also shows such composure for a young professional rugby player but it may be too soon to throw him in the deep end. He is one to watch in the future.
Then there are those dependable first fives who lack a bit of the X-factor but are still reliable, like Tom Taylor and Marty Banks, who will rise to the occasion if asked.
In the meantime, if I was a first five I'd ask the physio to put a bit more strapping tape around my knees, and work out in the gym to make the surrounding muscles as strong as possible. You never know when you could get the call up.
