Study rationale and protocol: prospective randomized comparison of metal ion concentrations in the patient's plasma after implantation of coated and uncoated total knee prostheses

Table 1 Summary of the study parameters

	Preop.	Discharge 7 - 10 days postop.	Follow-up 3 months	Follow-up 12 months	Follow-up 2 years	Follow-up 3 years	Follow-up 4 years	Follow-up 5 years
Clinical examination	X		X	X				X
Contact by phone					X	X	X
Metal ion concentrations in plasma	X			X				X
Testing for hypersensitivity	X							X
Knee Society score	X		X	X				X
Oxford score	X		X	X	X	X	X	X
UCLA activity score	X		X	X				X
SF 36	X		X	X				X
AE/SAE		X	X	X	X	X	X	X

ISSN: 1471-2474