Metatarsalgia

Metatarsalgia describes pain at the ball of the foot — the region where the five metatarsal bones meet the toes. The metatarsal heads bear significant load with each step, particularly during running and jumping, making them vulnerable to overuse injury and stress-related inflammation.

**Causes and contributing factors**

- *Intense training or activity:* distance runners and high-impact sport participants place repetitive stress on the forefoot. Rapid increases in training volume are a common precipitant - *Foot shape:* a high arch concentrates load on the metatarsal heads rather than distributing it along the foot. A second toe longer than the big toe shifts load abnormally to the second metatarsal head - *Foot deformities:* hallux valgus (bunions) and hammertoes alter forefoot mechanics and redistribute pressure; tight or high-heeled footwear can cause or worsen these deformities - *Excess body weight:* more of the body's weight passes through the forefoot during movement — heavier individuals place greater stress on the metatarsal heads - *Poorly fitting footwear:* high heels shift weight forward onto the ball of the foot; shoes with a narrow toe box compress the metatarsal heads together; worn-out athletic shoes lose shock absorption - *Stress fractures:* small breaks in the metatarsal bones alter loading mechanics and cause local pain that may mimic or accompany metatarsalgia - *Morton's neuroma:* a benign fibrous thickening around the common digital nerve — typically between the third and fourth metatarsal heads — produces burning, shooting pain and numbness in the toes that closely resembles metatarsalgia

**Risk factors**

- High-impact sport participation (running, jumping) - Wearing high heels or ill-fitting footwear regularly - Excess body weight or obesity - Foot deformities: hammertoe, bunions, plantar calluses - Inflammatory arthritis (rheumatoid arthritis, gout)

**Management**

*First-line (conservative):* - Footwear modification — wide toe box, adequate cushioning, low heel - Metatarsal pads or custom orthoses to redistribute forefoot load - Activity modification — reduce impact loading during the acute phase - Calf stretching and intrinsic foot muscle strengthening to improve dynamic support

*When conservative measures are insufficient:* Corticosteroid injection reduces acute inflammation around a painful metatarsal head or Morton's neuroma. Pulsed radiofrequency, ozone therapy, and prolotherapy can address chronic forefoot pain and promote tissue recovery. Severe Morton's neuroma or structural foot deformities may ultimately require surgical intervention.