There's no such study that I'm aware of, so post it if you have read one because I'd be very curious...
It is a valid alternative site for IO access and more easily obtainable with no extra positioning required after Tibia failure, unlike humerus. There are plenty of IO's marketed as sternal only IO's like the FAST1 and the latest article I read from 2011 was about a 75% success rate in pre-hospital setting with a paramedic placing one in a bouncing ambulance. Not too shabby. It's also placed in the upper sternum and therefore does not interfere with compressions and if you've placed many IO's, they don't exactly shake loose very easily or "slip out" like an angiocath from a vein.
Also, there's a study that I'm too lazy to look up on animal models comparing all IO's with time to peak concentration of code drugs and sternal IO is the fastest with Tibia taking roughly twice as long to obtain peak arterial concentration.
It ain't the first place you're going to go for, but don't let pre-conceived notions and subjective opinion get in the way of a potentially very useful way to facilitate rapid venous access in a critical patient.
The latest studies for 1st time IO success, and I'll post them if people are interested but it's roughly:
1) Tibia: ~86%
2) Humerus: ~60%
3) Sternum: ~75%
All pre-hospital retrospective studies. Don't knock the sternum.
I've seen very few people do sternal IO's simply because most people don't know much about them or haven't done one before, not because it's been clinically proven to be a terrible site. It hasn't.
I wouldn't say that it is a terrible site, I would just make it my 4th choice and its not often you have to get to the 4th option. It seems that there is always a lot going on at that area of the patient and adding your IV/med person would crowd an overcrowded area already.
"Intraosseous vascular access in adults using the EZ-IO in an emergency department"
Int J Emergency Medicine Sept 2009
"Various site have been proposed as suitable for IO insertions, including the proximal tibia [3, 4, 13], distal tibia [2], sternum [4, 12, 13, 22], radius [32], clavicle [14], proximal humerus and calcaneum [33]. The proximal tibia and proximal humerus sites were chosen for this study. The proximal tibia site was the initial insertion site of choice, as the landmarks were easily identifiable, superficial, easy to access percutaneously and proximal enough to allow rapid access of fluids or medications into the central circulation. In addition, it is away from vital areas where other resuscitation procedures are ongoing as well as vital structures that might get inadvertently punctured during insertion.
For example, the sternal and clavicular sites present problems when airway procedures and cervical immobilization are ongoing in trauma resuscitation. Likewise, the investigators felt that the distal tibia, radius and calcaneum sites would be relatively distal to the central circulation. The proximal humerus was the secondary site, in the event that intravenous cannulation was still unsuccessful after initial resuscitation."
The full article is that this was taken from can be accessed here:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2760700/
The sternal route if using the FAST device also tends to be longer than other methods:
From UpToDate:
"Available evidence indicates the following overall success rates and time to IO insertion in children and adults undergoing resuscitation:
Manual needles: 76 to 100 percent (50 to 67 percent in patients over one year of age) [22,49-51], median time to insertion 38 seconds [50]
Battery-powered driver: 87 to 97 percent [30,52,53], median time to insertion <10 seconds [30]
Bone injection gun: 45 to 91 percent [50,54-56], median time to insertion 49 seconds [50]
FAST1®: 72 to 95 percent [50,53,57], median time to insertion 62 seconds [50]"
Also noted was that the only deaths ever recorded from IO insertion were due to mediastinitis, hydrothorax, and great vessel injury from the sternal site.
Again, not completely against it but just think there are many better sites.