Table 2.

Location of osteolysis/radiolucent lines [15]

Patient	Gruen zones demonstrating osteolysis
	1	2	3	4	5	6	7
1	X				X	X	X
6	X	X	X	X	X	X	X
13		X				X	X
17				X		X	X
21	X	X	X	X	X	X	X
23	X	X				X	X
24	X						X
26						X	X
33		X			X	X	X