Double X Veterinary Services

Double X Veterinary Services Dr. Don Lee, DVM
Equine Performance Medicine, Lameness, Dentistry and Preventative
(3)

โ€œTo be a good equine vet you have to have patience and dedication, and you have to be passionate about what you do. It takes staying up all night and getting up the next day to do it all over again. I hope when someone talks about me they say that I try as hard as I can every day.โ€ - Dr. Don Lee, DVM

Raise your hand if you've been victimized by Don telling you your horse needs changes to their feet during a lameness ex...
05/21/2026

Raise your hand if you've been victimized by Don telling you your horse needs changes to their feet during a lameness exam ๐Ÿ™‹โ€โ™€๏ธ We may need to start offering therapy sessions for ownersโ€ฆ

Kidding. Mostly.

But when you take those X-rays to your farrier after being told your horse needs angle adjustmentsโ€ฆ do you actually understand what improper hoof angles do biomechanically?

Most people donโ€™t.

Horses commonly battle negative plantar/palmar angles (NPA), though excessively steep angles can also create major problems. While some horses naturally grow difficult feet, chronic imbalance is more often tied to farrier work that isnโ€™t actively trimming or shoeing for proper balance and support.

The palmar angle refers to the angle of the coffin bone (P3) within the hoof capsule. In the hind feet, this is called the plantar angle.

โ€ข Positive angle: tip of the coffin bone points slightly downward
โ€ข Zero angle: coffin bone sits parallel to the ground
โ€ข Negative angle: tip of the coffin bone points upward

When those angles become abnormal, the entire biomechanics of the horse change.

Common effects include:
โ€ข Increased strain on the DDFT
โ€ข Increased tension on the suspensory ligament
โ€ข Altered joint mechanics
โ€ข Changes in weight distribution and center of mass

In the hind end, poor angles can contribute to:
โ€ข โ€œMysteryโ€ hind-end soreness
โ€ข Lack of engagement or power
โ€ข Difficulty collecting
โ€ข Reluctance to back or step underneath themselves
โ€ข Hock and stifle soreness
โ€ข SI discomfort
โ€ข Chronic low-grade suspensory issues

In the front end, poor angles can contribute to:
โ€ข Short, choppy stride
โ€ข Toe-first landing
โ€ข Intermittent lameness
โ€ข Shoulder and pectoral soreness
โ€ข General front-end compensation patterns

Youโ€™ve probably heard the phrase โ€œNo foot, no horse.โ€ It exists for a reason.

Even subtle hoof imbalance changes how the horse loads every joint, tendon, ligament, and muscle above it. Horses with negative angles commonly develop long toes, underrun heels, and a bullnosed hoof wall. Horses with healthy functional angles tend to land flat or heel-first and maintain a straighter hoof capsule.

Long-term imbalance can create a domino effect throughout the entire musculoskeletal system, which is why understanding how a hoof should land, load, and function matters so much.

And if your vet recommends changes, your farrier should be willing, and able, to make them.

Barefoot.
Metal shoes.
Corrective packages.
Composite shoes.
Glue-ons.
Frog support.

There are options for nearly every horse and every situation.

The hoof is the foundation of the horse biomechanic system. Even small changes in the foot can completely change how the rest of the body functions.

05/15/2026

The 'magic' pink injection.

Injecting Vitamin B12, mixed with whatever maintence injection you choose (most commonly used with corticosteroids), is often used to combat muscle soreness, spasms, or general/excessive tension. In performance horses, you'll sometimes see this notoriously pink liquid being used in their back, hamstrings, and sometimes their poll. It is not used as an injection into the joint space (intra-articular) like Renovo, Hyaluronic Acid, Noltrex, and Arthramid Vet are.

If my horse isn't noticeably lame, do I still need to invest in maintenance?The hot topic across all industries: prevent...
05/13/2026

If my horse isn't noticeably lame, do I still need to invest in maintenance?

The hot topic across all industries: preventative care in performance horses. People start asking the questionโ€ฆ are we getting too aggressive with maintenance? Are we injecting horses before it's actually needed?

It can feel odd at first. Preventative care? But nothing seems wrong right now.

The goal of preventative care isnโ€™t to inject every joint at every opportunity. Itโ€™s to stay ahead of soreness before it becomes a major issue that affects comfort, performance, or longevity.

Performance horses put repetitive stress on their bodies every single day. Small amounts of inflammation, compensation, and wear can exist long before obvious lameness appears. Horses are incredibly good at adapting and hiding discomfort until they physically canโ€™t anymore. Preventative care works by recognizing and addressing those small changes early. Itโ€™s about supporting the horse so they can continue performing comfortably and correctly, instead of waiting until they are significantly sore or lame. By the time a horse is visibly lame, the body has often already been compensating for quite awhile.

At that point, it often stops being a simple โ€œone visit fixes allโ€ situation. You can peel back one layer, address that soreness, and a month later discover soreness somewhere else that had been masked by compensation over time.

You cannot out-train or outrun pain.

A horse compensating somewhere will eventually overload another structure. Tiny issues become bigger ones when left unmanaged. Soreness isn't always injury.
That doesnโ€™t mean every horse needs injections often. Good maintenance should always be individualized to the horse, their workload, age, discipline, conformation, history, and how they feel physically. Sometimes maintenance looks like injections. Sometimes itโ€™s chiropractic work, body work, shoeing changes, rehab, rest, strengthening exercises, or adjusting workload.

The goal is longevity, comfort, and keeping the horse feeling their best for as long as possible.

05/11/2026

Your ex may not have listened, but Don will.

You should NEVER leave a vet visit feeling like you haven't been heard, wether that is with your equine partners or pets. Period. What you feel and notice matters.

The question we've been meaning to ask...What would YOU like to see more of?
05/09/2026

The question we've been meaning to ask...

What would YOU like to see more of?

05/08/2026

Thats a juicy one. Esesntially the pimple popping version of equine sports medicine ๐Ÿ‘€

The stifle is one of the most common maintenance sites in performance horses. As the largest and one of the most complex joints in the equine body, it absorbs a tremendous amount of load and is often a major source of hind-end soreness and lameness.

The stifle contains three synovial joint sacs: the femoropatellar, the medial (inside) femorotibial, and the lateral (outside) femorotibial compartments. Excess fluid accumulation within the stifle, or any synovial joint, is referred to as joint effusion.

Joint effusion can be a sign of acute inflammation from workload, stress, or overuse. When excessive, persistent, or recurrent, it may also indicate underlying stifle injury or instability. In todayโ€™s performance horses, the stifle is one of the most common areas requiring consistent maintenance and monitoring to keep horses comfortable, strong, and performing at their best.

Adressing stifle soreness/lameness can range from joint injections (like Polyglycan, Noltrex, Alpha2, corticosteriods, and PRP) to time off, or even scoping the stifle to check for damaged cartilige.

Maintaining a performance and breeding stallion.Weโ€™re in the midst of the BUSIEST time of year, breeding season and peak...
05/07/2026

Maintaining a performance and breeding stallion.

Weโ€™re in the midst of the BUSIEST time of year, breeding season and peak show season (not just for barrel horses, but all parts of the western industry) and many stallions are now taking on two extremely demanding jobs.

Performing and collecting.

Collecting puts a different type of strain on a stallion, it uses muscle groups and movement patterns that don't get worked unless they are being collected throughout the year.

Regular and consistent maintenance during the off season will help keep a stallion from additional visits during breeding season, but itโ€™s important to note that the act of collecting can aggravate and create soreness in areas we donโ€™t often see sore in a normal performance horse or will need maintenance in places they may not need normally.

Common places for soreness:
SI
Stifles
Hocks
Pelvis
Hips
Back
Shoulders
Neck

Even subtle soreness can negatively impact semen quality and output, as well as willingness in the breeding barn. It's critical to notice changes or soreness patterns and keep up with maintenance throughout breeding season, this is important for stallions whether they are competing or not.

If you want them operating at their best in the arena AND in the breeding barn, you have to:
โœ”๏ธ Pay attention to subtle changes
โœ”๏ธ Catch soreness early
โœ”๏ธ Stay on top of maintenance during the season, not just before it

The same way you maintain your performance horses, your stallion deserves in his seasonal job, too.

From all of here at Double X, we want to THANK YOU! Thank you all for trusting Don and the entire team here with both yo...
05/06/2026

From all of here at Double X, we want to THANK YOU! Thank you all for trusting Don and the entire team here with both your equine partners and your four legged household family members.

Dr Lee wakes up every day with the same passion and goal to help horses, no matter how long the day before was. He is dedicated to you and your horses and wants to help find answers and make sure they're feeling their best, and thus, performing their best.

We returned late Sunday from Ruby Buckle, and once again you all made it a very busy-but great-week at the Lazy E. We are so grateful for all the clients who come from far and wide to have Don look at their horses. It wasn't only a successful week for the team at Guthrie, though, many clients went and had success both inside the Lazy E Arena and across Texas at some of the spring rodeos, congratulations!

If you were there this week and had your horse seen by the team, we would love to hear your experience. Once again, THANK YOU ALL!

04/30/2026

Iโ€™m not at the Ruby Buckle sale but I do have opinions on every single horse like I am

๐’๐ž๐ฏ๐ž๐ซ๐ž ๐–๐ž๐š๐ญ๐ก๐ž๐ซ ๐๐ซ๐ž๐ฉStorm season is here, and having a plan matters just as much for your animals as it does for you.When...
04/29/2026

๐’๐ž๐ฏ๐ž๐ซ๐ž ๐–๐ž๐š๐ญ๐ก๐ž๐ซ ๐๐ซ๐ž๐ฉ

Storm season is here, and having a plan matters just as much for your animals as it does for you.

When severe weather or tornadoes are coming, the goal is simple. Keep them as safe as possible and avoid last minute chaos.

Horses:
- Turn out in a large, safe pasture if possible
- Avoid small pens, trees, and anything they can get trapped against
- Do not lock them in a barn that could collapse
- Make sure they have ID on them such as a halter with a tag, braided tag in the mane, or something that stays with them

Dogs and cats:
- Bring them inside well before the storm hits
- Have a safe room or crate ready so they are contained and not panicking or trying to escape
- Keep leashes, carriers, and essentials in one place so youโ€™re not scrambling
- Stay aware of weather alerts and act early, not when itโ€™s already on top of you

No setup is perfect in a tornado, but preparation gives you the best chance of avoiding injuries and losing animals.

Have a plan before you need one.

๐ƒ๐จ๐ฎ๐›๐ฅ๐ž ๐— ๐•๐ž๐ญ๐ž๐ซ๐ข๐ง๐š๐ซ๐ฒ ๐’๐ž๐ซ๐ฏ๐ข๐œ๐ž๐ฌ
xxvets.com โ—ฆ (940) 514-9500

Address

136 CR 1793
Sunset, TX
76270

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+19405149500

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