Case Story: Tendon injury in a horse

Chocca the beloved pony of 15yearold Anna was always full of beans. She without a doubt had a wild streak. And she was well known within their local Pony Club to tackle every fence on the crosscountry course without so much as a shred of reservation. Anna had been very fortunate that apart from the odd cut or graze on her legs from leaping through brush jump fences Chocca had never had any serious injury or ailment so far!
However her parents were very aware that although Chocca was a fantastic pony and brought their daughter immeasurable joy she also had the potential to be a financial liability should anything happen to her while they were adventuring around the crosscountry course. They had taken out equine insurance for her on the day they bought her. And also had her vetted by the local equine vet in a detailed prepurchase exam to ensure she was fit and healthy for her adventures with Anna. 

Another summer one day event
It was the same as any other summer day at the Pony Club oneday event the rain was pouring down! This didnt stop Anna and Choccas enthusiasm though. And despite the weather their family was out in full force to support them both through each of the three events dressage showjumping and crosscountry. 
The dressage was smooth sailing although as onbrand as ever Chocca kept her head above the bit for the entire thing!. And they breezed through the showjumping with a clear round. After a quick lunch from the chippy van it was time for the crosscountry round. 
Anna was always careful to do a thorough warmup with Chocca to get her muscles tendons and ligaments stretched warmed up and ready for the course ahead. She also had taken the precaution of having Chocca tacked out in protective tendon boots on her front legs. After a 20minute warmup with some excited bucks from Chocca who knew there was a crosscountry course to fly around! and some practice fences they were ready to go. 
The first portion of the crosscountry course was terrific with the pair making a great time
Unfortunately though disaster struck at the water jump! Despite her usual bravery Chocca got spooked by the water splashing her belly and landed unevenly on her front legs. This caused her to slip and then fall on the exit bank. Thankfully Anna was protected by her helmet and body protector and fell without injury save a few bruises!. But poor Chocca was lame on her left front leg and feeling very sorry for herself. 
The vet on call for the event immediately came to Choccas aid
With the help of Anna and the fence steward they got Chocca into the horse box and drove her to the safety of the Vets exam tent. Poor Choccas front leg was very hot swollen and tender when the vet examined it. The vet gave Chocca an injection of pain relief and applied an ice pack to her leg to help make her more comfortable. Anna and her parents were also advised on how to treat Chocca that evening when they got home by the vet.
The vet recommended to bed Chocca on a deep bed of shavings hosing down both her front legs with cold water for 20 minutes and applying an ice pack overnight to help with the swelling. The vet explained that it was important to hose both front legs not just the affected one. This is because the nonaffected leg would be carrying extra weight because of the lameness on her left front leg. And therefore it would