Peak Performance International LLC

Peak Performance International LLC 🩻 Dr. Arianna Aaron DC
🦴 Equine Chiropractor
✨️ Equine neuromusculoskeletal expert
🧠 Equine education and best practices

🩻 Dr. Arianna Aaron, DC
🦴 Chiropractor
🐴 Horse + rider performance & soundness
🧠 Education | Biomechanics | Prevention
✈️ FL | NJ
📩 Book ⬇️
peakperformanceequine.net/

06/02/2026

Carpal and Shoulder Adjustment | Front Limb Reach, Loading & Compensation

If your horse feels short in front, heavy on landing, or restricted through the shoulder, the issue may not be the lower limb alone.

It may be how the carpus and shoulder are influencing reach, weight bearing, and compensatory loading.

The superficial digital flexor helps support the distal limb, flex the phalangeal joints, and stabilize the fetlock, but stride quality depends on more than the flexor chain itself. The carpus contributes to limb flexion and load transfer, while shoulder mechanics influence how the limb reaches and accepts weight.

When motion becomes less efficient through the carpus or shoulder, the horse may show:
shortened reach
heavier loading on landing
reduced stride length
less shoulder freedom
compensation through the lower limb

This does not mean every short front stride is a carpal or shoulder problem, and it does not replace veterinary diagnosis. It does mean that front limb mechanics should be assessed as a system, not just as one structure.

Comment FLEXOR and I’ll message you the first thing I check when a horse looks short or tense in front.

Book a Performance Assessment if front limb loading, stride quality, or shoulder freedom has changed.

Superficial Digital Flexor | Front Limb Support, Fetlock Stability & Lower Limb LoadingIf your horse feels short in fron...
06/01/2026

Superficial Digital Flexor | Front Limb Support, Fetlock Stability & Lower Limb Loading

If your horse feels short in front, heavy on landing, or less free through the stride, the issue may not be reach alone.

It may be how the lower limb flexor chain is functioning under load.

The superficial digital flexor muscle sits on the caudal aspect of the forearm and gives rise to the superficial digital flexor tendon, which contributes to distal limb support during locomotion.

Anatomical overview

Origin
Medial epicondyle of the humerus
Olecranon
Caudal surface of the radius

Course
Passes distally through the carpal canal
Forms the manica flexoria around the deep digital flexor tendon proximal to the fetlock

Insertion
Proximal palmar aspect of the middle phalanx
Distal and proximal aspect of the proximal phalanx

Innervation
Primarily the median nerve

Primary functions
Flexes the proximal and middle phalangeal joints
Supports and stabilizes the fetlock
Contributes to lower limb support during locomotion
Helps manage load through the distal limb

Clinical relevance
When the superficial digital flexor is overloaded, tense, or functioning in a less efficient loading pattern, horses may look shorter in front, heavier on landing, or less able to smoothly accept and manage force through the limb. That does not automatically mean there is a tendon injury, but it does mean lower limb loading deserves a closer look.

Because distal limb function does not happen in isolation, altered loading here can also influence carpal posture, shoulder freedom, and compensatory patterns higher up the chain.

Save this post for reference.

Comment FLEXOR and I’ll message you the first thing I check when a horse looks short or tense in front.

Book a Performance Assessment if front limb reach, loading, or posture has changed.

A lot of horses that feel stiff through the back are not actually weak.They are guarding.If the spine cannot move or sta...
05/30/2026

A lot of horses that feel stiff through the back are not actually weak.

They are guarding.

If the spine cannot move or stabilize efficiently under load, the horse often starts bracing through the topline instead of engaging through the trunk.

That can look like:
• hollow transitions
• resistance under saddle
• difficulty lifting through the back
• tension after work
• reduced fluidity
• harder to sit at the canter

This is why strengthening alone often fails.

Because true engagement depends on more than muscle strength.

It depends on:
• spinal mobility
• load transfer
• trunk stabilization
• neuromuscular coordination

In the new blog, I break down:
• what back bracing actually means
• how the longissimus supports spinal function
• why horses become hollow under saddle
• why mobility comes before true engagement
• where cat-camel exercises fit

Read the full educational blog (link in the bio)
Why Your Horse Braces Through the Back Under Saddle

Comment ENGAGEMENT and I’ll message you the first thing I check when a horse feels stiff or hollow under saddle.

05/26/2026

Lumbar Adjustment | Restoring Motion for Back Engagement

If your horse feels stiff through the back, braces under saddle, or struggles to lift the topline, the issue may not be the topline alone.

It may be lower, through the lumbar spine.

The longissimus helps stabilize and extend the vertebral column, but that system cannot function efficiently if the lumbar region is not moving well.

When motion becomes restricted here, the horse often has a harder time supporting the back, transferring force forward, and maintaining spinal control under load.

That can show up as:
back stiffness
hollowing
reduced topline lift
resistance under saddle
less effective engagement through the trunk

This is why I do not just look at the symptom. I assess how the lumbar spine, thoracolumbar region, and surrounding musculature are working together to figure out what is actually driving the restriction.

Restoring motion helps improve neuromuscular input, reduce protective tension, and create the conditions for better spinal support and more effective back engagement.

Comment BACK and I’ll message you the first thing I check when a horse feels stiff through the topline.

Watch for this week’s Therapy Thursday post where I’ll share a targeted mobility strategy to support longissimus function and spinal motion.

If back engagement, topline function, or spinal support has changed, book a Performance Assessment.

Longissimus | Spinal Support & Back EngagementIf your horse feels stiff through the back, struggles to lift the topline,...
05/26/2026

Longissimus | Spinal Support & Back Engagement

If your horse feels stiff through the back, struggles to lift the topline, or braces under saddle, the issue may not be topline strength alone.

It may be spinal support and control.

The longissimus is the largest muscle of the equine back and plays an important role in vertebral stability, spinal extension, and locomotor function. It spans the neck, thorax, lumbar region, and head through its regional divisions: longissimus lumborum, thoracis, cervicis, and capitis.

Anatomical overview

Regional divisions
Longissimus lumborum
Longissimus thoracis
Longissimus cervicis
Longissimus capitis

Origin
Spinous processes of the sacrum, lumbar, and thoracic vertebrae
Wing of the ilium
Transverse processes of the thoracic and cervical vertebrae

Insertion
Transverse processes of vertebrae
Tubercles of ribs
Wing of the atlas
Mastoid process of the temporal bone

Innervation
Dorsal branch of the local spinal nerve

Primary functions
Stabilizes the vertebral column
Extends the vertebral column
Elevates the head and neck
Contributes to lateral bending of the head and neck

Clinical relevance
When the longissimus is not functioning well, the horse often loses efficiency and support through the back. Riders may notice stiffness, hollowing, reduced topline lift, resistance under saddle, or a horse that feels less able to engage through the trunk.

Chiropractic insight
Restrictions through the thoracic spine, rib articulations, or thoracolumbar junction can reduce how efficiently the longissimus functions. Restoring motion, reducing protective tension, and improving neuromuscular coordination helps create the conditions for better spinal support and back engagement.

Save this post for reference.

Comment BACK and I’ll message you the first thing I check when a horse feels stiff through the topline or braces under saddle.

Book a Performance Assessment if back engagement, topline function, or spinal support has changed.

Back pain in horses does not always start in the back.A lot of horses become sore or restricted through the spine becaus...
05/23/2026

Back pain in horses does not always start in the back.

A lot of horses become sore or restricted through the spine because another part of the system is not doing its job.

If the pelvis cannot stabilize, the lumbosacral region cannot move efficiently, or the hind end cannot engage under load, the back often becomes the place where compensation shows up.

That can look like:
• rough transitions
• difficulty sitting
• loss of engagement
• weak canter
• hollowing through the back
• reduced push off
• stiffness under saddle

This is why I do not just assess where the horse feels tight.

I look at how the system is functioning:
• pelvic stability
• lumbosacral motion
• trunk control
• hindlimb coordination
• load transfer

Because true engagement is not just pushing harder behind.

It is how efficiently the horse stabilizes, transfers force, and controls the pelvis under load.

I broke this down in the full educational blog:
Horse Back Pain May Not Start in the Back

Read the full blog through the link in bio.

Comment ENGAGEMENT for the first thing I check.

05/21/2026

Therapy Thursday | Controlled Backing for Hind End Coordination

Backing is not just a groundwork exercise. It can reveal a lot about how well the horse coordinates the pelvis, trunk, and hind limbs under load.

If a horse struggles to engage behind, feels uneven in transitions, or has trouble sitting, controlled backing is a simple way to assess how that system is functioning.

Exercise | Controlled Backing

This drill asks the horse to shift weight caudally, stabilize through the pelvis and trunk, and step back with control rather than momentum.

Why this helps
Backing requires controlled pelvic motion, hindlimb loading, and trunk stability. It also requires repeated single-limb weight shift, because the horse has to stabilize on one hind limb while the other steps.

That makes it useful for identifying whether the horse is bracing, dragging, stepping unevenly, rushing, or struggling to stay organized through the lumbosacral and pelvic region.

When done slowly and with good control, backing can help support:
hind end coordination
pelvic stability
trunk control
cleaner transitions

What I watch for
I pay attention to whether the horse stays straight, steps back evenly, and controls the movement without dragging, rushing, or bracing through the body.

Clinical note
This is a coordination drill, not a substitute for restoring restriction when the lumbosacral junction, pelvis, or hip are limiting function. If backing is consistently uneven, resistant, or braced, that is useful clinical information.

Save this and watch how your horse backs. Uneven steps, bracing, or dragging behind may be worth assessing.

Comment ENGAGEMENT and I’ll message you the first thing I check when a horse struggles to coordinate behind.

If hind end engagement, pelvic stability, or transition quality has changed, book a Performance Assessment.

05/19/2026

Lumbosacral Adjustment | Restoring Motion for Hind End Engagement

If your horse feels weak behind, struggles in transitions, or has trouble sitting, the issue may not be the hock alone.

It may be higher, through the lumbosacral junction and pelvis.

The gluteus medius helps support hind end engagement, but that system cannot function efficiently if the pelvis and lumbosacral region are not moving well.

When motion becomes restricted here, the horse often has a harder time loading the hind end effectively, transferring force forward, and maintaining pelvic stability under saddle.

That can show up as:
rough transitions
difficulty sitting behind
reduced push off
a weak or flat canter
less effective hind end engagement

This is why I do not just look at the symptom. I assess how the pelvis, lumbosacral junction, hip, and hindlimb chain are working together to figure out what is actually driving the compensation.

Restoring motion helps improve neuromuscular input, reduce protective tension, and create the conditions for better pelvic stability and more effective hind end engagement.

Comment ENGAGEMENT and I’ll message you the first thing I check when a horse feels weak behind or struggles in transitions.

Watch for this week’s Therapy Thursday post where I’ll share a targeted strategy to support gluteus medius function and pelvic stability.

If hind end engagement, pelvic stability, or push off has changed, book a Performance Assessment.

Gluteus Medius | Pelvic Stability & Hind End EngagementIf your horse feels weak behind, struggles in transitions, or has...
05/18/2026

Gluteus Medius | Pelvic Stability & Hind End Engagement

If your horse feels weak behind, struggles in transitions, or has trouble sitting, the issue may not be the hock.

It may be higher at the pelvis.

The gluteus medius is one of the primary muscles involved in hip extension, pelvic stability, and forward propulsion. It plays an important role in how the horse stabilizes the pelvis under load and transfers force from the hindlimb into movement.

Anatomical overview

Origin
Gluteal surface of the ilium
Thoracolumbar fascia
Sacral and coccygeal fascia

Insertion
Greater trochanter of the femur

Innervation
Cranial gluteal nerve

Primary functions
Extends the hip
Supports propulsion
Supports pelvic stability under load
Helps transfer force through the hind end during movement

Clinical relevance
When the gluteus medius is not functioning well, the horse often loses efficiency, control, and stability behind. Riders may notice a weak or flat canter, rough transitions, difficulty sitting, reduced push off, or a hind end that does not feel fully engaged.

Because this muscle is so important for pelvic control and force transfer, dysfunction here often creates compensation through the lumbar spine, pelvis, and surrounding hindlimb musculature.

Chiropractic insight
Restrictions through the lumbosacral junction, pelvis, or hip can reduce how efficiently the gluteus medius functions. Restoring motion, reducing protective tension, and improving neuromuscular coordination helps create the conditions for better pelvic stability and more effective hind end engagement.

Save this post for reference.

Comment ENGAGEMENT and I’ll message you the first thing I check when a horse feels weak behind or struggles in transitions.

Book a Performance Assessment if hind end engagement, pelvic stability, or push off has changed.

Watch for this week’s Therapy Thursday post where I’ll share a targeted strategy to support gluteus medius function and pelvic stability.

Your horse may not actually have a shoulder problem.If your horse feels restricted in the shoulder, heavy on the forehan...
05/16/2026

Your horse may not actually have a shoulder problem.

If your horse feels restricted in the shoulder, heavy on the forehand, short in front, or resistant in bend, the issue may not be the shoulder itself.

A lot of horses that feel “tight in the shoulder” are actually struggling with:
thoracic sling support
scapular glide
cervicothoracic mobility
front-end load distribution

The shoulder is often where riders feel the problem.
Not always where the problem starts.

That is exactly what I break down in this week’s blog:
Why Your Horse Feels Restricted in the Shoulder

In the blog, I go through:
why the front end functions more like a suspension bridge than a rigid frame
how thoracic sling dysfunction changes scapular motion
why the cervicothoracic junction is so often overlooked
and why strengthening alone often fails when mobility is the real limiter

Read the full blog through the link in bio.

Comment SHOULDER and I’ll message you the first thing I check when a horse feels restricted in front.

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