Peroneal Tendonitis in Athletes: The Hidden Cause of Chronic Outer Ankle Pain in Runners, Basketball, Volleyball, Tennis, Padel & Pickleball Players
Outer ankle pain is one of the most commonly ignored sports injuries among active individuals. Many athletes continue training through discomfort, assuming it is “just soreness,” a mild ankle sprain, or temporary inflammation. However, persistent pain on the outer side of the ankle may actually be a condition called peroneal tendonitis, also known as peroneal tendinopathy.
At All Well Scoliosis Centre, we frequently see runners, marathoners, basketball players, volleyball athletes, tennis players, padel enthusiasts, and pickleball players struggling with chronic lateral ankle pain that repeatedly flares up during sports participation.
What makes this condition particularly frustrating is that many athletes temporarily improve with rest, only for symptoms to return once training intensity increases again.
The reason is simple.
Peroneal tendonitis is often not just an inflammation problem.
It is commonly a movement control, stability, balance, and load management problem.
What Is Peroneal Tendonitis?
The peroneal tendons run along the outer side of the ankle behind the fibula. Their role is to stabilize the foot and ankle, especially during:
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Side-to-side movement
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Running
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Jumping
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Landing
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Cutting
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Pivoting
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Uneven terrain
These tendons help control ankle eversion, which prevents the foot from excessively rolling inward during movement.
When the ankle repeatedly loses control under load, the peroneal tendons become overloaded. Over time, this can lead to irritation, degeneration, swelling, and chronic pain.
Common symptoms include:
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Outer ankle pain
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Tenderness behind the fibula
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Swelling around the ankle
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Pain worsening during activity
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Relief with rest
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Repeated ankle sprains
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Instability on uneven surfaces
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Pain during running or cutting movements
Why More Athletes Are Developing Chronic Outer Ankle Pain
Modern sports place enormous demands on the ankle.
Whether it is marathon running, basketball, volleyball, tennis, padel, or pickleball, athletes constantly expose the ankle to:
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Rotational loading
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Explosive directional changes
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Jumping and landing
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Sudden deceleration
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Single-leg loading
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Side-to-side force absorption
Unfortunately, many athletes train harder than their body is currently prepared to tolerate.
This is where problems begin.
Marathon Runners and Long-Distance Athletes
In clinical practice, many marathon runners suffering from chronic outer ankle pain show similar patterns:
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Poor ankle eversion control
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Fatigue-related instability
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Weak lateral ankle stabilizers
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Reduced foot-ground control
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Repetitive overload over long distances
Running is not simply forward movement.
Every stride requires:
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Balance
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Rotational control
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Ground adaptation
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Force absorption
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Stability under fatigue
During long runs, the ankle must repeatedly stabilize the body over thousands of steps.
When fatigue accumulates, movement efficiency decreases. The peroneal tendons then compensate excessively to protect the ankle from instability.
This is why many marathon runners experience flare-ups during:
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Longer mileage
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Downhill running
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Uneven terrain
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Trail running
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Sudden increases in training intensity
Although peroneal tendonitis accounts for less than 1% of running injuries, it can become chronic when instability is not corrected.
Basketball and Volleyball Athletes
Basketball and volleyball athletes are also highly vulnerable to peroneal tendon overload because of repeated:
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Jumping
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Landing
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Lateral shuffling
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Cutting movements
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Rotational loading
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Single-leg impact
Many athletes in these sports have a history of ankle sprains.
The problem is that many ankle sprains never fully rehabilitate.
After repeated sprains, the ankle often loses:
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Proprioception
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Joint awareness
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Neuromuscular timing
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Eversion strength
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Dynamic stability
As a result, the peroneal muscles work overtime trying to stabilize the ankle dynamically.
This explains why some athletes continue “rolling” the same ankle repeatedly.
In volleyball especially, repeated jumping and asymmetrical landing after spikes or blocks place enormous stress on the lateral ankle structures.
In basketball, rapid direction changes and stepping onto another player’s foot further increase the risk.
Tennis, Padel, and Pickleball Athletes
We are also seeing a growing number of tennis, padel, and pickleball athletes developing chronic outer ankle pain.
These sports involve:
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Twisting through the spine
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Rotational loading
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Sudden lunging
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Rapid acceleration and deceleration
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Reactive footwork
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Lateral movement under fatigue
In tennis particularly, players rotate aggressively during serves, forehands, and backhands while loading one leg.
If the foot and ankle are not prepared to stabilize during landing, the peroneal tendons absorb excessive stress.
The same pattern occurs in padel and pickleball, especially as fatigue reduces balance and coordination later in matches.
The Real Problem Is Often Stability, Not Just Inflammation
One of the biggest misconceptions about tendon injuries is assuming pain automatically means inflammation alone.
Many chronic peroneal tendon cases involve:
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Poor balance
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Weak lateral ankle control
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Delayed neuromuscular response
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Inadequate recovery
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Poor landing mechanics
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Faulty load distribution
The ankle is constantly making micro-adjustments every second you move.
If the body cannot efficiently distribute force through the foot, knee, hip, pelvis, and trunk, the ankle becomes the compensation point.
The tendon is often the victim — not the root cause.
Why Athletes Keep Reinjuring the Same Ankle
A very common pattern looks like this:
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Initial ankle sprain
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Temporary rest
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Pain decreases
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Athlete returns too early
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Stability deficits remain
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Tendons compensate repeatedly
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Chronic tendon irritation develops
This cycle is extremely common in:
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Marathon running
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Basketball
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Volleyball
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Tennis
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Pickleball
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Padel
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Badminton
because these sports demand rapid multidirectional movement.
Landing Mechanics Matter More Than Most People Realize
The issue is often not the jump itself.
The issue is the landing.
If the foot, ankle, hip, pelvis, and trunk cannot absorb force efficiently, the outer ankle structures become overloaded.
Fatigue makes this even worse.
As athletes tire:
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Balance decreases
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Reaction timing slows
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Foot stability weakens
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Side-to-side collapse increases
This is why many injuries occur:
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Late in games
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During tournaments
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During marathon fatigue phases
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During overtraining periods
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After inadequate recovery
Strength Alone Is Not Enough
Many athletes believe calf strength alone protects the ankle.
But true stability requires:
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Neuromuscular control
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Balance
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Rotational stability
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Single-leg control
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Dynamic coordination
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Proper force transfer
The ankle must react instantly to unpredictable forces.
This is why rehabilitation should include:
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Controlled ankle eversion strengthening
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Single-leg balance retraining
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Foot intrinsic muscle activation
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Proprioception drills
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Landing mechanics retraining
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Lateral stability exercises
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Sport-specific movement correction
The goal is not only reducing pain.
The goal is rebuilding resilience under real-world athletic demand.
Chiropractic and Conservative Management Approaches
Conservative care remains highly effective for most cases of peroneal tendonitis, with many athletes improving within 6–12 weeks when movement mechanics are properly addressed.
At our clinic, treatment may involve:
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Movement assessment
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Functional rehabilitation
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Soft tissue therapy
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Joint mobilization
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Neuromuscular retraining
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Progressive strengthening
Chiropractic Techniques Commonly Used
Chiropractic care for chronic ankle instability and tendon overload may include:
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High-Velocity Low-Amplitude (HVLA) ankle adjustments
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Foot and ankle mobilization
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Soft tissue release
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Myofascial therapy
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Functional rehabilitation exercises
Research suggests that combining manual therapy with rehabilitation exercises may improve pain and function in chronic recurrent cases.
Some studies also suggest that combining ankle manipulation with dry needling of peroneal trigger points may provide additional pain relief and improved mobility.
Don’t Train Through Pain for Ego
One of the most important lessons athletes need to understand is this:
Do not push through inflammation simply for ego.
Pain is communication.
Many athletes continue training because they fear losing progress, missing competition, or falling behind.
Unfortunately, repeatedly forcing inflamed tissues through excessive load often prolongs recovery and increases chronic tendon stress.
Inflamed tendons need:
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Proper rest
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Smart load management
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Progressive rehabilitation
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Recovery time
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Movement correction
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Gradual return to sport
Healing is not weakness.
Recovery is part of performance.
The strongest athletes are not the ones who ignore pain.
The strongest athletes are the ones who understand when the body needs recovery.
Final Thoughts: Stability Before Performance
Peroneal tendonitis may not be the most common sports injury, but it is one of the most overlooked causes of chronic outer ankle pain in athletes.
Whether you are:
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A marathon runner
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Basketball athlete
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Volleyball player
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Tennis athlete
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Padel enthusiast
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Pickleball player
long-term performance depends on your body’s ability to stabilize efficiently under stress.
Before chasing speed, mileage, power, or competition, the body first needs:
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Stable landing mechanics
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Proper balance
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Controlled ankle eversion
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Good rotational stability
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Efficient load transfer
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Adequate recovery capacity
Because when the ankle repeatedly loses control, the peroneal tendons eventually pay the price.