Table 1.

Demographic and clinical characteristics of patients undergoing cemented distal femoral replacement for tumor

Characteristic	Primary cohort (n = 205)	Revision cohort (n = 62)	p value
Gender
Women	43 (88)	29 (18)	0.05
Age in years	26 ± 16	31 ± 13	0.02
Follow-up in months	136 ± 122	141 ± 101	0.87
Diagnosis
Osteosarcoma	75 (153)	73 (45)	0.75
Ewing sarcoma	2 (4)	0 (0)	0.27
Chondrosarcoma	6 (13)	6 (4)	0.98
Other	12 (35)	21 (13)	0.48
Tumor stage
Stage I or benign	12 (25)	11 (7)	0.69
Stage IIA/IIB	71 (146)	55 (34)	0.80
Stage III	13 (26)	10 (6)	0.94
Resection length in mm	150 ± 80	150 ± 83	0.92
Stem length in mm	128 ± 19	131 ± 22	0.72
Stem diameter in mm	14 ± 3	16 ± 3	< 0.001
Fabrication
Custom	64 (131)	34 (21)
Modular	36 (73)	66 (41)	0.001
Porous collar
Yes	62 (128)	73 (45)	0.01
Implant revision
Yes	38 (78)	65 (40)	< 0.001
Adjuvant therapy
Chemotherapy	77 (158)	N/A
Radiation	11 (44)	N/A

Categorical data are presented as % (n) and continuous variables are presented as mean ± SD.