3022506 MCPJ metacarpophalangeal joint 122 1271332 MPJ metatarsophalangeal joint 75 1225797 MCP metacarpophalangeal joint 68 2511075 MCPJs metacarpophalangeal joints 14 283820 MP metacarpophalangeal joints 14 3022677 MCPs metacarpophalangeal joints 12 3021099 MCJP metacarpophalangeal joints 1 3069848 MPJs metacarpophalangeal joints 1