Avanza Salud
Clinical blog · primary evidence

What the evidence says about podiatry, physiotherapy and return to sport

Every article is based on primary studies with a traceable DOI. No clickbait, no unsupported claims. What works, what does not, and what is not yet known.

Author
Dr Eduardo Martín
Podiatrist · Physiotherapist
Clinician Lecturer Researcher
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Podiatry · Physiotherapy

Ultrasound gel and infection risk: why sterile gel matters in ultrasound-guided procedures

Ultrasound gel is harmless for scanning, but not for needling. What the evidence says about infection from non-sterile gel in ultrasound-guided injections and needling.

10 July 2026 · 5 min Read →
Podiatry

Ultrasound-guided posterior tibial nerve block: why seeing the needle makes it safer

Anaesthetising the sole of the foot while watching the nerve and the artery in real time. What ultrasound guidance adds to safety, according to the evidence.

5 July 2026 · 6 min Read →
Physiotherapy

Runner's knee: patellofemoral pain and iliotibial band syndrome

Knee pain when running: what the evidence says about risk factors, hip and knee exercise, and orthoses. What works and what does not.

24 June 2026 · 6 min Read →
Podiatry

Ultrasound-guided hyaluronic acid injection: hallux rigidus and ankle osteoarthritis

Hyaluronic acid, guided by ultrasound, as a safe option for hallux rigidus pain and ankle osteoarthritis: how it relieves, why precision matters and when it is indicated.

16 June 2026 · 6 min Read →
Physiotherapy

Tennis elbow: ultrasound-guided electrolysis and exercise

Why corticosteroid injections relieve in the short term but worsen the outcome at one year, and what combining ultrasound-guided electrolysis with exercise adds.

3 June 2026 · 5 min Read →
Podiatry · Physiotherapy

Heel pad syndrome: when heel pain is not plantar fasciitis

Heel pad syndrome, or atrophy of the heel's fat cushion: how ultrasound distinguishes it from plantar fasciitis and which treatments have evidence.

27 May 2026 · 5 min Read →
Podiatry

Ingrown toenail: when to treat conservatively, when to operate and what stops it coming back

Conservative treatment in early stages and nail surgery with phenolisation of the matrix. What the evidence says and why technique matters to stop it coming back.

20 May 2026 · 5 min Read →
Podiatry

Leg length discrepancy: marker-based photogrammetric measurement and heel raises

A shorter leg is very common, but it only matters when there are symptoms. Millimetre-accurate photogrammetric measurement, criteria for compensation and an orthosis with a precisely dosed heel raise.

15 May 2026 · 6 min Read →
Podiatry

Hallux rigidus / hallux limitus: conservative treatment, injections and surgery

Osteoarthritis of the big toe: manual therapy, first MTP joint exercise, intra-articular injections, cheilectomy and minimally invasive surgery according to grade.

1 May 2026 · 6 min Read →
Cross-specialty

Homeopathy, pseudoscience and the anti-vaccine movement: why we work with scientific evidence

Why homeopathy is indistinguishable from placebo, what the Wakefield case shows about scientific fraud, and how these ideas reach the clinic.

15 April 2026 · 5 min Read →
Podiatry · Physiotherapy

Plantar fasciitis: which treatments work according to the evidence

Stretching, strengthening, custom orthoses and advanced techniques: what the clinical and scientific evidence says.

1 April 2026 · 5 min Read →

More articles are published in the Spanish edition of this blog.