Posterior Tibial Tendinopathy: Why I See It Everywhere in Dubai — and What Science Really Says
Posterior tibial tendinopathy (PTT) is one condition I encounter remarkably often in Dubai, affecting both athletic women and sedentary individuals.
Scientific literature usually highlights several classic risk factors: being female, over the age of 40, carrying excess body weight, or having flat feet. But let’s be honest — in Dubai, wearing flip-flops all year round does not help.
The posterior tibial tendon was simply not designed to stabilise a foot trapped in a soft, unsupportive sole with no structural support. From a biomechanical standpoint, it is a recipe for overload.
Curious to see whether my clinical observations aligned with current scientific evidence, I reviewed the literature. Surprisingly, I found very few high‑quality studies on conservative treatment, particularly physiotherapy — despite it being considered first‑line management.
A 2022 scoping review clearly states:
“The lack of high‑quality trials investigating conservative treatments is concerning, given that these represent the first line of management. Studies comparing different exercise protocols and exploring other non‑surgical approaches are needed.”
Before discussing rehabilitation strategies, let’s return to the basics.
What Is Posterior Tibial Tendinopathy?
The posterior tibialis is a deep muscle located in the back of the lower leg. Its tendon passes behind the medial malleolus and inserts into the navicular bone and several midfoot structures.
Its primary functions include:
- Foot inversion
- Contribution to propulsion during gait
- Support of the medial longitudinal arch
When this tendon becomes compromised, overall foot mechanics deteriorate.
Tendinopathy refers to a condition characterised by pain, reduced function, and structural tendon changes due to progressive overload. Importantly, tendinopathy is multifactorial — rarely caused by a single incident.
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Typical Clinical Symptoms
In clinical practice, posterior tibial tendinopathy often presents with:
- Pain along the tendon, particularly behind the medial malleolus
- Difficulty walking long distances or climbing stairs
- Loss of ankle inversion strength
- Pain during a single‑leg heel raise
- Progressive collapse of the medial arch (acquired flatfoot in advanced cases)
The Most Reliable Clinical Test
The single‑leg heel raise is consistently identified in the literature as the most reliable assessment tool.
A patient who cannot perform it without pain, weakness, or arch collapse is highly likely to have posterior tibial tendon dysfunction.
Who Is Most at Risk?
Based on available (and unfortunately limited) epidemiological data, posterior tibial tendinopathy predominantly affects:
- Women over 40 years of age (86% of study cohorts)
- Individuals who are overweight (81.5% had a BMI >25)
- People with flat feet or excessive pronation
- Possibly those with leg length discrepancy (data remains unclear)
Clinical Reality Beyond the Research
What scientific papers often fail to capture is what clinicians see daily:
Poor footwear choices.
Soft, flat, unsupportive shoes — flip‑flops, slides, flexible sandals — worn for prolonged periods force the posterior tibial tendon to stabilise an inadequately supported foot.
The result? Chronic overload and gradual tendon failure.
What Biomechanics Teaches Us About PTT
Gait analysis and functional studies reveal a consistent biomechanical pattern.
1. Increased Heel Eversion
The heel rolls inward excessively, increasing demand on the posterior tibial tendon to control pronation.
2. Forefoot Abduction
The forefoot drifts outward due to reduced midfoot control — a hallmark sign of posterior tibialis dysfunction.
3. Reduced Medial Arch Height Under Load
Studies show increased arch angles, reflecting progressive collapse — not always reaching rigid flatfoot.
4. Weakness Beyond the Foot
Patients with PTT often demonstrate:
- Reduced ankle inversion strength
- Weak hip abductors and extensors
This confirms that posterior tibial tendinopathy is a kinetic‑chain problem, not merely a local tendon issue.
5. Impaired Balance
Single‑leg stance is frequently compromised, with unstable centre‑of‑pressure control — further increasing tendon load.
Diagnosis: Clinical Assessment vs Imaging
Clinical Examination
Diagnosis is primarily clinical and highly reliable.
The single‑leg heel raise remains the most validated test in current literature.
Imaging: Useful but Not Mandatory
- Ultrasound: Excellent for detecting tendon thickening, tenosynovitis, or partial tears
- MRI: Reserved for advanced degeneration or unclear diagnoses
In most cases, a detailed clinical assessment combined with ultrasound is sufficient.
What Does Science Say About Conservative Treatment?
1. Orthoses: Helpful but Incomplete
Research shows:
- Pain reduction in 67–83% of cases
- Improved arch stability
- Long‑term benefits (7–10 years) with rigid devices such as AFOs
However, orthoses do not address forefoot abduction or proximal muscle weakness.
2. Exercise: The Cornerstone of Rehabilitation
Despite limited trials, strengthening — particularly eccentric training — shows consistent benefits:
- Reduced pain
- Improved function
- Restoration of single‑leg heel raise ability
- Increased posterior tibial strength
Most evidence suggests a minimum 12‑week programme, consistent with other tendinopathies.
3. Combined Approaches Work Best
Kulig et al. (2009) demonstrated:
- Orthoses + stretching + eccentric exercise = best outcomes
- Orthoses + concentric exercise = moderate improvement
- Orthoses alone = limited benefit
Physiotherapy Management: A Phased Approach
Phase 1: Load Management & Pain Reduction
- Relative rest
- Footwear modification and orthoses
- Taping and subtalar joint mobilisation
- Isometric inversion exercises
Phase 2: Strengthening
- Resisted inversion
- Intrinsic foot muscle training
- Eccentric strengthening of posterior tibialis and calf muscles
Phase 3: Proprioception & Proximal Strength
- Balance training (stable → unstable surfaces)
- Hip abductor and extensor strengthening
Phase 4: Functional Return
- Single‑leg heel raises
- Hopping and dynamic tasks
- Gradual return to sport and daily activities
Daily Advice for Patients
- Choose structured footwear with proper arch support
- Avoid flip‑flops, slides, flat ballerinas, and soft sandals
- Use custom orthotics if excessive pronation exists
- Avoid prolonged unprepared walking
- Perform strengthening exercises 2–3 times per week
Conclusion
Posterior tibial tendinopathy is common, particularly in environments that encourage prolonged use of unsupportive footwear. While high‑quality research remains limited, clinical evidence strongly supports conservative management, especially when combining orthoses with progressive, whole‑body strengthening.
Early diagnosis, patient education, and addressing the entire kinetic chain — from foot to hip — remain the keys to successful long‑term outcomes.
Struggling with ankle or foot pain? Book a physiotherapy assessment today and start your journey to pain-free walking.
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