Table 1.

Case series

Patient no.	Sex	Age	Side	Bearings	Time from implantation (years)	Preoperative pain (VAS) (mm)	Postoperative pain (VAS) (mm)	Radiological healing	Follow-up (years)
1	Male	68	Left	Metal–PE	13	39	15	Yes	4
2	Male	54	Right	Ceramic–PE	6	30	16	Yes	3.2
3	Female	63	Right	Ceramic–PE	3	27	29	Yes	3.2
4	Male	55	Right	Ceramic–PE	5	48	31	Yes	2.25