osteoarthritis in the foot

osteoarthritis in the foot

typically affects first metatarsophalangeal joint, metatarsocuneiform, naviculocuneiform and talonavicular joints; treated by drug regimes (e.g. paracetamol or opioids [for pain control], systemic or topical non-steroidal anti-inflammatory drugs [to control inflammation], intra-articular injection of corticosteroid or hyaluronic acid) or non-drug measures (e.g. weight reduction and exercise) and surgery (e.g. arthrodesis, excision arthroplasty, joint replacement); see Box 1
Box 1: Characteristics of osteoarthritis in the foot
  • Asymmetrical hypertrophic inflammatory degenerative arthritis

  • Commonly affects the first metatarsophalangeal joint, medial sesamoid first metatarsal head joint, medial cuneiform first metatarsal joint, navicular cuneiform joint, talonavicular joint, but any joint may be affected, especially if there is a history of joint trauma

  • Focal loss of articular cartilage

  • Osteophytosis, showing on radiograph as bony 'lipping' (osteophytes) at the affected joint margins

  • Progressive uneven loss of the joint space (reflecting the loss of articular cartilage)

  • Subchondral sclerosis and subchondral cyst formation

  • Pain on joint movement and progressive loss of range of joint motion

  • Eventual ankylosis and resultant reduction of joint pain