Tumor resection at the pelvis using three-dimensional planning and patient-specific instruments: a case series

Table 1 Patient characteristics (n = 4)

Case	Age (y)	Sex	Tumor	Location	Surgery	Chemotherapy	Follow-up (mths)	Planning	Osteotomy	Tumor-free margin	Metastasis	Precision (max error (cm))	Complication
1	14	F	Ewing sarcoma	Ilium	Resection	Yes^a	6	3-D	Freehand	Yes	No	2.8	No
2	42	M	Giant cell tumor	SI joint	Resection and curettage	No	9	Print-out	Freehand	NA^b	No	NA^b	Yes^c
3	53	M	Chondrosarcoma	Gluteus maximus	Resection	No	7	Print-out	Freehand	Yes	No	NA^b	Yes^d
4	51	M	Chondrosarcoma	Ilium and hip joint	Resection	No	9	3-D and print-out	PSI	Yes	No	0.4	Yes^c

y years, mths months, max maximal, cm centimeters, F female, M male, 3-D three-dimensional, SI sacroiliac, NA not applicable, PSI patient-specific instrument
^aNeoadjuvant and adjuvant
^bDue to curettage. Subjectively better precision than 3-D planning and worse precision than PSI
^cAsymptomatic insufficiency fracture of the inferior pubic ramus
^dSubacute, ischemic infarction of the left cuneus with severe headaches and homonymous hemianopsia

ISSN: 1477-7819