This mnemonic has been used commonly to recall the features of Charcot Joints (sometimes it is referred to as 5 Ds instead of 6 Ds because dislocation and disorganization are combined):
4. Debris (intraarticular bodies, which can be seen with synovial osteochondramotosis)
5. increased Density (sclerosis)
See a nice case example of a shoulder Charcot joint here.