Table 4.

Reoperations (n = 31)

Reason for reoperation	No., primary metastasis	Median time to reoperation (months)	Treatment
Deep wound infection	5, spine
	3, pelvis
	2, femur	1.3	Wound revision
Hematoma	7, spine	0	Drainage
Material failure	3, femur	2.5	Total joint replacement
Wound dehiscence	3, spine	1	Secondary wound closure
Increasing neurological
symptoms	2, spine	0	Extended laminectomy
Prosthetic dislocation	2, pelvis	0.5	Open reduction Extraction of prosthesis
Non-union	1, femur	24	Total joint arthroplasty
Periprosthetic fracture	1, femur	5.6	Osteosynthesis
Poor initial fixation	1, femur	0.5	Osteosynthesis
Technical error	1, spine	0.2	Extended laminectomy