Plantar fasciitis

Pathophysiology

  • The plantar fascia is a fibrous band of connective tissue, extending from the calcaneus bone to the tendons of the forefoot and proximal phalanges, which supports the arch of the foot
  • Plantar fasciitis is caused by the structural breakdown of the fascia in a chronic non-inflammatory degenerative process that involves microtears, collagen breakdown and scarring. 
  • RFs: Age 40-60, obesity, high arched feet, flat feet, excess use (walking, standing, running)

Clinical Features

  • Gradual onset of sharp heel pain, or pain along the arch of the foot
  • The pain is most severe after periods of rest, or classically the first few steps after waking 
  • Symptoms then improve with continued walking
  • Examination:
    • Pain on palpation of the heel
    • Positive Windlass test - extension of the 1st MTP reproduces the pain

Morton’s neuroma

Pathophysiology

  • A benign, thickening of the common digital plantar nerve due to persistent irritation from compression (usually within the third intermetatarsal space). 

Clinical Features

  • Intermittent episodes of forefoot pain, often sharp or burning. Episodes usually last minutes to hours. In chronic cases, pain can become constant. 
  • Altered sensation/numbness/paraesthesia in toes
  • The sensation of a stone in one’s shoe
  • Exacerbated by activity
  • Examination
    • Pain is reproduced on palpation over the affected metatarsophalangeal space
    • Loss of/altered sensation in the affected toes
    • Mulder’s click may be positive