Table 4.

Data for patients with failed revision THAs

Patient number	Age (years)	Gender	Comorbidities	Preoperative diagnosis	Type of revision	Highly cross-linked polyethylene?	Reason for failure	Time after revision (months)	Type of rerevision
1	45	M	None	Instability	Head/liner exchange	Yes	Instability	110	Acetabular and femoral
2	46	F	None	Loosening	Acetabular and femoral	Yes	Loosening	54	Acetabular
3	23	F	Sickle cell anemia	Loosening	Acetabular	No	Infection	23	Explant
4	25	M	None	Osteolysis	Head/liner exchange	No	Loosening	76	Acetabular
5	47	F	Systemic lupus erythematosus	Osteolysis	Acetabular	Yes	Loosening	12	Acetabular
6	47	F	Systemic lupus erythematosus	Loosening	Femoral	Yes	Loosening	98	Acetabular
7	22	F	None	Osteolysis	Head/liner exchange	No	Instability	1	Head/liner exchange
8	53	F	None	Instability	Head/liner exchange	Yes	Instability	17	Acetabular
9	53	F	Systemic lupus erythematosus	Liner Dissociation	Head/liner exchange	No	Instability	1	Acetabular
10	23	F	Juvenile Rheumatoid Arthritis	Osteolysis	Head/liner exchange	No	Liner Dissociation	58	Head/liner exchange
11	53	F	None	Liner Dissociation	Head/liner exchange	No	Loosening	114	Acetabular
12	31	F	None	Instability	Head/liner exchange	No	Gluteus medius tendon tear	56	Head/liner exchange
13	45	F	Systemic lupus erythematosus	Loosening	Acetabular	Yes	Instability	1	Head/liner exchange
14	43	F	None	Loosening	Femoral	No	Osteolysis	110	Head/liner exchange
15	44	F	None	Loosening	Femoral	No	Osteolysis	169	Head/liner exchange
16	49	M	None	Loosening	Femoral	No	Loosening	156	Femoral
17	46	F	Rheumatoid Arthritis	Loosening	Acetabular	No	Infection	81	Explant
18	46	F	Systemic lupus erythematosus, renal failure	Wear	Head/liner exchange	Yes	Fractured Liner	22	Acetabular
19	54	F	Rheumatoid Arthritis	Instability	Acetabular	Yes	Instability	9	Head/liner exchange
20	42	F	None	Osteolysis	Acetabular	Yes	Loosening	10	Acetabular
21	44	F	Systemic lupus erythematosus	Osteolysis	Head/liner exchange	No	Instability	13	Acetabular
22	49	F	Systemic lupus erythematosus	Loosening	Acetabular and femoral	Yes	Instability	41	Acetabular
23	44	M	None	Loosening	Femoral	No	Infection	40	Explant
24	52	F	Systemic lupus erythematosus	Leg length discrepancy	Head/liner exchange	No	Instability	69	Acetabular
25	50	M	None	Loosening	Acetabular	Yes	Loosening	22	Acetabular
26	54	F	None	Osteolysis	Head/liner exchange	No	Osteolysis	88	Acetabular
27	48	F	Rheumatoid arthritis	Fractured stem	Femoral		Wear	97	Head/liner exchange
28	44	F	None	Loosening	Acetabular	Yes	Instability	9	Head/liner exchange
29	34	F	None	Loosening	Acetabular	Yes	Loosening	132	Acetabular
30	40	M	None	Loosening	Acetabular	Yes	Loosening	11	Acetabular
31	51	F	None	Loosening	Acetabular	Yes	Loosening	92	Femoral
32	37	M	None	Osteolysis	Head/liner exchange	No	Loosening	61	Acetabular