Unfortunately my mare tore a front superficial. Luckily not all the way through and I was proactive with stalling and rest even before the vet could see her. 

We opted to do the renovo, and treat with Shockwave etc. At her 3 week check up vet was pretty happy with the progress, she's to continue to be stalled for another 2 weeks then recheck again. He feels that we might be able to start very light exercise at that point hopefully. He seems pretty positive about her come back.

My question is, after reading a bunch of articles I've now scared myself. Most articles basically sound like this is career ending and most are prone to re injury. Looking to see if anyone's dealt with this injury themselves and what the prognosis was. Also wanting to know what steps I should take or can take in the future to keep the possibility of re injury to a minimum. What kind of additional care could I incorporate? Thanks in advance!!! 

It is definitely not career ending . I've rehabbed several tendon ligament injuries , mostly suspensory injuries, but I've had 2 SFDT, and a couple DDFT. The last superficial flexor I took care of was a 75% tear/splatter of the SFDT that was returned to work in 7 mo, when the original estimate was at least 1 yr and no guarantee of being performance sound. 
I am a huge believer in the Acuscope after treating this filly with it. 

Regenerative meds (like the Renovo ), stall rest and regular therapy to stimulate blood flow in the area are critical . Shockwave is good for pain relief and getting rid of fluid. Do u/s every 4-6 weeks to make sure fiber formation and alignment is taking place. Hand walk, no turn out or increased exercise until you have good fiber alignment . Your horse should be fine as long as you don't do too much exercise too soon. 

Probably not career ending, but risk of re-injury will always be there. Scar tissue is weaker than the original structure, but a lot have successful careers after. Just be cautious on the ground you're running in & be more choosy where/when you enter. Take the time to walk a little extra in your daily warmups to ge tthat tendon warm and supple, it'll reduce risk. Same for cooling out. Rehab & outcome will depend on the horse & the method taken. I did a month of stall rest on one per the vet and that ended his career, he needed to have walked from the beginning. Within that first month the scar tissue had already formed the wrong direction & ended up wrapping around & binding the tendons together. Had I walked him from the start he would have been fine. Live and learn.

Be ok with setbacks, they're common. I'm rehabbing just a mild strain right now and I'm on month 5, but she did great and then we introduced loping & the tendon said nope. It is what it is, we went back to just trotting & gave it a little more time & she's 90% back to full work now. She's still on straight lines and really large circles only, it's winter and no shows until spring so I have no reason to rush. But originally it was supposed to be 4 months from start to back on the pattern. The leg will tell you what it's ready for & what it's not, just pay attention. You are looking at probably 8-12 months though, depends how the scar tissue is growing. I have succesfully rehabbed some that maintained careers after once I really learned how to rehab. I also really like the aquatread if you can find one close, that helped my mare a ton with her strain. I use Draw it Out pretty much daily on it as well

How did you get diagnosed? MRI or CT?

Ultrasound, the fibers were super clean & clear. No need to spend $3,000 to do an MRI