Metatarsalgia

What is Metatarsalgia?

Metatarsalgia is a collective term for pain in the area of ​​the forefoot (metatarsus), typically under the heads of the metatarsal bones (metatarsal heads). It is not a single illness, but rather a complaint with different causes. The aim of treatment is to identify the triggering factors and to reduce mechanical overload.

• Location: Ball of the foot/under the metatarsal heads (II–V), more rarely on the ball of the big toe
• Character of pain: pressing, burning, stabbing; often worse in tight/high shoes
• Often accompanied by: calluses/callus pain (clavus), occasionally swelling or numbness

Metatarsalgia can occur in isolation or as part of other forefoot diseases, e.g. B. in hallux valgus, hammer/claw toes, plantar plate lesions, Morton's neuralgia or after injuries.

Anatomy and biomechanics of the forefoot

The forefoot is formed by five metatarsal bones (metatarsalia) and the toe rays. When rolling, the load is distributed to the ground via the metatarsal heads. Ligaments, tendons and the plantar plate stabilize the metatarsophalangeal joints of the toes. A pad of fat under the head has a shock-absorbing effect.

• Metatarsal head: main load carrier during push-off in the stance phase
• Plantar plate: fibrocartilaginous structure, protects against overextension and distributes pressure
• Transverse vault: is used, among other things. maintained by plantar soft tissues and the short muscles of the foot
• Fat pad: cushions the ball region; it may become thinner with age

If there is a lowering of the transverse arch (splayfoot) or shifts in the forefoot (e.g. due to hallux valgus), the pressure is concentrated on individual metatarsal heads - the result can be painful metatarsalgia.

Typical symptoms

• Stress-dependent pain under the balls of the feet, worse when walking/standing
• burning, stinging or tenderness; Often starting pain after rest
• reinforcement in high or tight shoes; Relief barefoot on soft ground
• Callus formation and pressure points on individual heads
• Sometimes discomfort in the toes (tingling, numbness)

More specific pain syndromes must be distinguished, e.g. B. Morton's neuralgia (nerve-related, electrifying pain between two toe rays) or sesamoid bone syndrome on the ball of the big toe.

Causes and risk factors

Metatarsalgia usually arises from a combination of anatomical disposition and mechanical overload. Common triggers are:

• Splayed foot/lowering of the transverse arch – overloading of the central metatarsal heads (II–III)
• Toe misalignments: Hallux valgus (load transfer), hammer/claw toes (pressure tips), mallet toe
• Plantar plate lesion or insufficiency (instability of the MTP joint, “toe elevation”)
• Fat pad atrophy (age-related, after repeated stress)
• Inappropriate footwear: narrow toe box, high heels, thin/hard soles
• Sports overload: increasing running volume, sprints, jumps, hill runs
• Bone stress: stress reaction/stress fracture of the metatarsals, Freiberg disease (osteonecrosis near the head, usually II)
• Soft tissue involvement: intermetatarsal bursitis, Morton's neuralgia
• Systemic factors: obesity, rheumatoid arthritis, gout, diabetes (neuropathy), weak connective tissue
• Calf muscle shortening (equinus): earlier and stronger forefoot loading when rolling

It is not uncommon for several factors to come into play, such as the onset of hallux valgus with splayed feet and unsuitable footwear.

Diagnostics in practice

Precise diagnostics clarify whether there is primarily mechanical overload or whether a specific structure is affected (plantar plate, nerves, bones). We combine anamnesis, clinical examination and imaging procedures.

Laboratory tests are only useful if inflammatory rheumatic causes or gout are suspected.

Conservative treatment – ​​the most important building block

Most metatarsalgias can be easily controlled with conservative measures. Relieving the pressure peaks, optimizing the footwear, correcting the rolling behavior and training the foot muscles are crucial.

• Shoe advice: wide toe box, soft insoles, low heel height, sufficient cushioning; If necessary, rolling aid/rocker sole
• Insoles supply: individually adapted insoles with correctly positioned metatarsal pad (behind the heads, not directly below) to restore the transverse arch; If necessary, soft bedding in case of fat pad atrophy
• Podiatry: professional callus removal reduces local pressure and inflammation
• Load adjustment: temporary reduction in running volumes/jumps; alternative training (cycling, swimming)
• Physiotherapy: stretching the calf muscles; Strengthening the short foot muscles (“short foot” exercise); Mobilization of the MTP joints; Gait training
• Taping/toe orthoses: relief of unstable metatarsophalangeal joints, temporary correction
• Cold therapy: short-term pain relief in irritable conditions
• Medication: anti-inflammatory painkillers (e.g. NSAIDs) short-term and indication-related

A correctly placed pad is central: it lies directly behind the painful head, raises the transverse arch and shifts the load. A pad placed too far distally can increase symptoms.

For physically active patients, a step-by-step return-to-run plan, a running technique check (stride length, cadence) and suitable running shoes are important.

Injections and regenerative procedures – with a sense of proportion

In selected cases, targeted infiltration can help calm acute irritation - for example in intermetatarsal bursitis or nerve irritation. The focus is on benefits and risks; the measure does not replace the causal relief.

• Local anesthetic +/- low dose cortisone: can relieve inflammatory reactions in bursae or around a neuroma; cautious use and strict indication
• Ultrasound-guided injections: increase precision and minimize soft tissue trauma
• Biological procedures (e.g. PRP): evidence is limited for metatarsalgia/plantar plate problems; Use only after informed consent and when conservative standard therapies have been exhausted

Before each injection, we discuss the benefits, risks (e.g. local skin/fatty tissue irritation, infection) and alternatives. The goal remains to reduce the need for invasive measures through shoe/insole optimization and exercises.

When does an operation make sense?

Surgery is the exception and is considered if persistent, everyday pain persists despite consistent conservative therapy and a structural cause can be clearly identified.

• Correction of accompanying deformities: e.g. B. Hallux valgus surgery for load centering, correction of hammer/claw toes
• Metatarsal interventions: e.g. B. Weil osteotomy (length/position correction of overloaded metatarsals) in selected cases
• Plantar plate reconstruction: in cases of proven rupture/insufficiency with instability of the MTP joint
• Special interventions: Treatment of stress fractures/Freiberg disease depending on the stage

Surgical decisions are individual. We explain realistic goals, possible complications (e.g. persistent tendency to swell, tendency to stiffen, transfer metatarsalgia) and the necessary follow-up treatment with insoles and physiotherapy.

Course and prognosis

The prognosis is usually good with early conservative treatment. Many patients report noticeable relief within weeks - especially through shoe adjustments, correctly placed pads and consistent calf/foot muscle exercises.

• Short-term (2-6 weeks): Relieve irritation through relief, podiatry, cold and adjusted stress
• Medium term (6–12 weeks): Stabilization through insoles, muscle building, gait training
• Long-term: sustainable improvement through maintaining shoe/load-bearing strategies; Relapses possible when returning to high heels/tight shoes or uncoordinated increases in stress

A persistent development of symptoms should be a reason for a reevaluation - including imaging and testing of the insole fit.

Self-help and prevention

• Choose shoes with a wide toe box and moderate drop; Avoid high heels in everyday life
• Only wear insoles/pads after adjustment; Have the position checked regularly
• Daily short programs: calf stretch (2x/day), "short foot" exercise, toe grip exercises
• Increase your load smartly: 10% rule in running training, plan rest days
• Weight management: every kilogram less relieves the forefoot
• Callus care: podiatric treatment prevents point-like pressure peaks
• Prefer soft surfaces; Well-cushioned shoes for longer journeys

Note: Self-treatment does not replace a specialist assessment - especially in the case of new, severe or nocturnal pain.

When should you seek medical advice?

• Severe forefoot pain with limping or pain at night
• Rapid swelling/redness/warmth, fever or sores
• Neurological symptoms: persistent numbness, weak toe-off phase
• Suspected stress fracture (point pressure pain, inability to bear weight)
• Diabetes with foot problems or calluses/wounds that heal poorly
• Persistent symptoms despite consistent shoe/insole adjustment

The earlier the cause is identified, the more targeted relief can be achieved and chronicity can be prevented.

Special groups: sports, office, diabetes

Depending on everyday life and previous illnesses, triggers and therapy accents vary.

• Running: training control, shock absorption, technology; Those affected often benefit from rocker soles and increased step frequency
• Office/Business: Alternatives to high heels, inconspicuous pad solutions, custom-made insoles for business shoes
• Older patients: pay attention to fat pad atrophy; soft insoles and non-slip, comfortable shoes
• Diabetes/neuropathy: regular foot checks, podiatry care, pressure-relieving care with particular attention to skin integrity

Differential diagnoses at a glance

• Morton's neuralgia: electrifying, radiating pain between two toes; often deafness; positive Mulder sign
• Sesamoid syndrome/sesamoiditis: Pain under the ball of the big toe
• Gout attack or rheumatic inflammation: highly acute redness/pain/warmth
• Metatarsal stress fracture: local, stabbing pain on exertion, often swelling
• Freiberg disease: pain over the second metatarsal head, especially a. in adolescents/young adults

The exact assignment is important because therapy and prognosis differ.