Plantar Fasciitis

Degenerative condition of the plantar fascia that causes sharp pain on the bottom of the foot pain

Aetiology

  • Repetitive stress/overload or degenerative condition

Risk factors

  • Physical overload - excessive exercise, excessive weight (obesity)
  • Diabetes
  • Age - the cushioning heel fat pad atrophies with age
  • Abnormal foot shape - splanovalgus or cavovarus
  • Frequent walking on hard floors with poor cushioning in shoes

Clinical presentation

Symptoms

  • Start up pain after rest on the instep of the foot (at the origin of the plantar aponeurosis on the distal plantar aspect of the calcaneal tuberosity)
  • Pain can be worse after exercise

Signs

  • Fullness or swelling on plantarmedial aspect of heel
  • Localised tenderness on palpation of the plantar aspect of heel and/or plantarmedial aspect of heel
  • Tinel's test positive for Baxter's nerve

Investigations

  • Clinical diagnosis

Management

  • Rest, NSAIDs
  • Night splints, taping, heel cups or medial arch supports
  • Physiotherapy - achilles and plantar fascia stretching exercises
  • Corticosteroid injection may alleviate symptoms
  • Symptoms can take up to two years to resolve
  • Surgical release of the plantar fascia risks injury to the plantar nerves and it is unclear whether there is an actual benefit