Surgical Guides (Patient-Specific Instruments) for Pediatric Tibial Bone Sarcoma Resection and Allograft Reconstruction

Table 1

Summary of 4 cases of tibial resection with PSI.

	Case 1	Case 2	Case 3	Case 4
Patient information
Age (y)	18.2	12.5	11.2	9.8
Sex	M	M	F	M
Sarcoma type	OS (local occurrence)	EWS (primary)	OS (tibial metastasis of a femoral OS)	OS (primary)
Resection
Type	Intercalary	Intercalary	Intercalary	Osteoarticular
Length (cm)	8.0	11.8	8.2	16.4
Preservation	Preservation of epiphysis	Preservation of proximal tibial growth plate	Preservation of epiphysis; sacrifice of growth plate	Epiphysiodesis of contralateral proximal tibia
Results
Local complications	None	Transient common fibular nerve palsy	None	Sepsis requiring allograft replacement
Time to host-allograft; junction union (mo)	4	9	12	None
Followup (mo)	17	19	14	10
Final patient outcome	Excellent; walking without assistance	Excellent; walking without assistance	Excellent; walking without assistance	Poor after initial procedure; good final result; walking with a brace

M: male; F: female; OS: osteosarcoma; EWS: Ewing’s sarcoma.