Arthritides of the Foot

Summary
Arthritis 1st IP 2nd-5th IP 1st MTP 2-5 MTP Tarso
Metatarsal		 Chopart
RA Rheumatoid Arthritis: Marginal erosions at 1st IP joint
++		 - Rheumatoid Arthritis: Erosions and subluxation 1st MTP joint
+++		 Rheumatoid Arthritis: Erosion 5th metatarsal head and base proximal phalanx
+++

Rheumatoid Arthritis: Narrowing of Lisfranc and Chopart joint
++

 Rheumatoid Arthritis: Narrowing of Lisfranc and Chopart joint
+
Psoriasis

Psoriasis: Erosions 1st IP joint
+++

 Psoriasis: Erosions 5th PIP and DIP joint
++		 ++ Psoriasis: Erosions 5th MT head
++		 - -
Reiter's Reiter 's Erosion 1st IP joint with periostitis
+++		 Reiters: Fusion 3rd proximal interphalangeal joint
++		 Reiter's: Erosion and productive changes 1st MTP joint.
++		 Reiter's: Erosions 5th MTP joint
++		 - -
AS - - + Ankylosing Spondylitis: erosions
+		 + +
OA - - Osteoarthritis: Joint space narrowing and Osteophytes at 1st MTP joint
+++		 - Osteoarthritis: Oblique view shows small osteophyte at 1st TMT joint
++		 -
Gout Gout: Large erosion with overhanging edges 1st metatarsal
++		 Gout: Erosion in both head of proximal phalanx and base middle phalanx 2nd toe with normal joint space
++		 Gout: Erosions 1st MTP joint with preservation of joint space
+ ++		 Gout: Large erosions 5th MTP joint
++		 Gout: Erosions bases of metatardal bones
++		 +
CPPD - - CPPD - note faint calcium deposition at 1st MT head
+		 - - +
Silastic - - Silastic hemiarthroplasty with large erosions 1st metatarsal head.
+		 - - -
Septic ++ Septic Arthritis 5th PIP joint
++		 Septic Arthritis: Joint space narrowing and erosions
++		 ++ + +
Charcot + + + Charcot: 2nd MTP joint
++		 Charcot: AP - Dislocation tarsometatarsal joint
+++		 Charcot: AP -
++
Introduction Psoriatic Arthritis Reiter's Disease Ankylosing Spondilitis Osteoarthritis Gout  
Calcium Pyrophosphate Deposition Disease Silastic Arthropathy Septic Arthritis Neuropathic Joint   Summary Reference