Devices descending from K920577

2 later devices reach Howedica Zirconia Femoral Head through their predicates, nearest generation first.

Generation	Number	Device	Applicant	Decided	Own descendants	Recalls
+1	K972361	V40 Zirconia Femoral Heads	Howmedica, Inc.	1997	1	—
+2	K993889	Exeter Ceramic Femoral Heads	Howmedica Osteonics Corp.	2000	0	—