Clinical Outcomes of Osteoarticular Extracorporeal Irradiated Autograft for Malignant Bone Tumor

Table 2

ISOLS radiographic evaluation form for osteoarticular graft.

	Fusion	Resorption	Fracture	Graft shortening	Fixation	Subluxation	Joint narrowing	Subchondral bone
Excellent = 4	Osteotomy line no longer visible	No resorption or geometric change Periosteal new bone formation	No fracture	No shortening	No change	No change	No change	No change
Good = 3	Fusion ≥75% of cortical thickness, osteotomy line still visible	Resorption <25% of cortical thickness and no fracture	Incomplete fracture	Shortening <2 cm	Minor change <10° lysis around screw/plate without failure	<0.5 cm	<2 mm	X-ray change but no collapse
Fair = 2	Fusion 25–75% of cortical thickness	Resorption 25–50% of cortical thickness and no fracture	Simple fracture without displacement	Shortening 2–4 cm	Bending >10° broken device not affecting graft soft tissue detachment	0.5–1 cm	2–4 mm	Partial collapse <1 cm
Poor = 1	No evidence of callus or fusion <25% of cortical thickness	Resorption >50% or type 1 fracture with resorption	Simple fracture with displacement or comminuted fracture	Shortening >4 cm	Failure of device with damage of graft	>1 cm	>4 mm	Partial collapse >1 cm or total collapse type 3 fracture