Achilles Tendonitis / Tendinosis

The Achilles tendon—the strongest tendon in the body—endures forces up to 8 times body-weight when you run. Repetitive overload, however, can inflame its sheath (tendon-itis) or degenerate its fibres (tendinosis) and leave every step aching. Our board-certified podiatrists deliver ultrasound-guided diagnosis, evidence-based rehabilitation, and, when required, minimally invasive repair to get you back to pain-free push-off.


Pathophysiology & Risk Factors

Over-use & Training Error Anatomic / Biomechanical Systemic & Medication
Sudden mileage or hill-running jump Tight gastrocnemius–soleus complex Fluoroquinolone or corticosteroid use
Speed work without progressive load Haglund’s deformity (pump bump) impinging on tendon Hypercholesterolaemia, diabetes
Hard-court sports on rigid shoes Excessive pronation or high-arch cavus foot Inflammatory arthritis, psoriasis

Chronic micro-tears outpace repair, leading to collagen disorganization and thickening 2–6 cm above the calcaneal insertion (watershed zone) or directly at the insertion.

Clinical Presentation

  • Pain and stiffness in posterior heel—worse with first steps or after inactivity
  • Thickened, nodular tendon palpable when squeezed side-to-side
  • Tenderness 2–6 cm proximal to insertion (mid-portion) or directly at bony insertion (insertional)
  • Crepitus with ankle dorsiflexion (paratenon friction) in acute cases
  • Reduced single-leg heel-rise endurance compared with contralateral limb
  • Possible visible Haglund bony prominence or shoe-back irritation

Diagnostic Work-Up

  • Targeted physical exam – Royal London and arc tests discriminate mid-portion vs. paratenon involvement.
  • High-resolution ultrasound – measures tendon thickness (> 6 mm) and Doppler hyperaemia.
  • MRI when ultrasound is equivocal or pre-operative mapping is needed.
  • Plain radiograph to assess Haglund spur or insertional calcification.

Evidence-Based Management

Conservative First-Line (≈ 80 % success) Escalation / Procedural Surgical (≤ 10 % of cases)
Eccentric calf-load protocol (Alfredson, 12 wks) Extracorporeal shock-wave therapy (ESWT) × 3 sessions Debridement & FHL tendon transfer for degenerative mid-portion tears
Activity modification & heel-drop progression Ultrasound-guided high-volume injection (saline + anaesthetic) Open or endoscopic calcaneoplasty for Haglund bump + insertional disease
Heel lifts / rocker-sole shoes to reduce tensile load Platelet-rich plasma (PRP) or bone-marrow concentrate injection Percutaneous longitudinal tenotomy (minimally invasive micro-debridement)
Calf-stretching & foam-rolling of gastrocnemius Topical glyceryl trinitrate patch (research-supported) SpeedBridge® double-row anchor repair for insertional partial tear
Short course NSAIDs or ice massage for acute flare Dry needling & ultrasonic tenotomy (TX1/RF coblation)

Randomised trials show > 60 % pain reduction with eccentric loading alone in 12 weeks; combining ESWT or PRP raises success to ~ 85 % in recalcitrant cases.

Treatment Philosophy

  • Load-management first – mechanical overload is the root problem; we correct it before invasive options.
  • Imaging-guided precision – ultrasound ensures biologic injections target degenerated zones, not healthy fibres.
  • Step-wise escalation – conservative → biologic / energy-based → minimally invasive → open repair only when necessary.
  • Athlete-centric timelines – return-to-run or play protocols calibrated to individual sport demands, with clear criteria (pain < 2/10, 25 single-leg heel-rises).

Frequently Asked Questions

With strict eccentric rehab, many runners resume jogging at 8–10 weeks; full intensity typically returns by week 12–16, depending on symptoms and strength testing.

Corticosteroid inside or around the Achilles carries rupture risk and is generally avoided. We favour ESWT, PRP, or high-volume saline strips that preserve tendon integrity.

Only if the spur impinges on tendon fibres. Most insertional cases improve with debridement of degenerated tissue and re-anchoring; spur excision is added when bony prominence is the irritant.

Restore Powerful Push-Off

Don’t let Achilles pain derail your strides or sideline your game. Schedule a focused evaluation with North Texas Podiatry Associates to start an evidence-based program that rebuilds tendon strength and keeps you moving.

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