My comments are based on gelding (TBs) 4-5 to as many as 10+ a year. The vast majority are “long” 2 year olds, some 3-4-5 and one 6.
All are done at our farm. Because we have a great relationship with the New Bolton Center we our “gelding sessions” to be used a a teaching session also. For which we and are clients get a huge price brake. One of their head surgeons does the “work”, teaching assisted by resident vets and a gallery of students.
We used to do “standing” but changed to sedating and laying down on their backs. “laying down” is the preferred method with younger horses and safer with just about all horses. For the last 7+ years or so the Henderson tool has been used.
We never geld unless absolutely necessary in warm buggy times of year.
After the procedure the horse is stalled for 24-48 hours at most. This allows for “things” to “seal up” and it is important to keep the horse as calm as possible to avoid a higher heart rated, higher blood pressure and temperature. Which can hinder clotting and lead to more , longer bleeding episodes. “Dripping” is to be expected. Hind legs covered in blood the next morning is the exception not the norm.
After the stall rest we may give some Bute and turn out. But turn out is usually not the best way to help encourage draining and the healing process. Especially if Bute is not used. The horse is obviously very sore and reluctant to move around much if any. Which is why I far prefer to geld horses that are well under saddle. 15, 20 minutes of trotting and a bit of cantering really helps control swelling, unwanted clotting at the incision sites for most but not all horses.
Prolonged swelling is almost always found with horses that are just turned out. If riding is not an option then long walks should be incorporated with turn out. Long walks meaning a couple of miles.
Even with incorporating the above post surgery methods some horses can and do experience extreme swelling. The scrotal area can look and feel like a large water balloon.The sheath may come into play also and get a “bubble” on the end.
All this is almost always due to the incisions closing up before “things” inside have not clotted properly. The vet comes out, cleans and opens things up to drain. Large “liver” looking blood clots can be found and are removed also.Most of the time this only has to be done once. It is not a difficult thing to learn and saves a lot of money if done by the caretaker. I always like for a vet to check things out the first time to make sure there isn’t something more serious going on.
As others have said take temp twice a day until the swelling is in the normal range of “norm”. Checking for an possible infection is pretty easy by performing a simple “sniff test”. If I have to explain this I suggest working with a vet.
Given the fact you acquired the horse after it was gelded I would get your vet to check things out. I would only use a vet that is very well versed in post gelding not one that has only dealt with the odd horse and the rest of their “knowledge” is from a class room. The vast majority of horses that people have and or vets work with were gelded long before.
Swelling found in the area you have described is not unusual 2 weeks post. As long as it not “water balloon size”. But I think I would get your vet to check things out in the near future. Worth the cost for piece of mind. The vets I have worked with far prefer riding over lunging. I agree having done both. No worries about the horse bucking. They may give a little buck at first but they figure out pretty quickly it is much less painful to just WTC.
We never “pack” and I don’t remember having to do so post surgery.
“there is a higher incidence of problems when the area is sewn up.”
A horse gelded and “sewn up” should always be done in a clinic not at the farm. It requires a high level of “bio-security” to eliminate any chance of contaminates being “sealed in”. It also increases the cost considerably, The cost of a “farm gelding” should a couple of hundred at best. When done in a clinic $1,500 to $2,000++. A “clinic session” is usually recommended for much older horses, horses that were used for stud duty.
Being a guy gelding is not something I look forward to participating in. I apologize before and after. Unless he was a total SOB. In that case I remind him that; I told you if you didn’t straighten up and fly right what would happen sooner rather than later.