Classifications

Question 1

Eichenholtz, Shibata, Yu

Answer 1

• Stage 0: swelling, warmth, joint instability; no radiographic signs
• Stage I (destructive): joint laxity, subluxation, osteochondral fragmentation
• Stage II (coalescence): absorption of debris and fusion of larger fragments to adjacent bone
• Stage III (remodeling): revascularization and remodeling of bone and fragments

Question 2

Onvlee

Answer 2

• Pattern A: plano-valgus-abductus foot
• Pattern B: rocker bottom foot
• Pattern C: ankle deformity in varus direction
• Pattern D: extremely flat foot

Question 3

Charcot Anatomic Classification

Answer 3

• Zone 1: distal and proximal IPJs, MPJs (15%)
• Zone 2: TMTJs (40%)
• Zone 3: NCJs, TNJ, CCJ (30%)
• Zone 4: Ankle joint, STJ (15%)
• Zone 5: Calcaneus (5%)

Question 4

Wagner

Answer 4

• Grade 0: skin intact, no open lesion
• Grade 1: superficial ulcer
• Grade 2: deep ulcer involving tendon, muscle, or bone
• Grade 3: grade 2 with infection (abscess or OM)
• Grade 4: partial gangrene in forefoot
• Grade 5: gangrene of entire foot, no procedure possible

Question 5

UTSA

Answer 5

• Grade 0: pre- or post-ulcerative lesion (epithelialized)
• Grade 1: superficial wound
• Grade 2: deep wound to capsule or tendon
• Grade 3: deep wound to bone or joint
• Type A: clean, vascular
• Type B: infected, vascular
• Type C: clean, ischemic
• Type D: infected, ischemic