Pirogow’s Amputation: A Modification of the Operation Method

Table 2

Modified Ankle and Hindfoot Score (AOFAS) with consideration given to the lack of ankle function and more weight given to functional and radiological criteria based on Taniguchi (Ankle Score) [15].

Criteria	Assessment (point total)
Pain	Pain free (40)	Light (30)	Moderate (20)	Strong (10)
Functional criteria
Walking distance	Unrestricted (20)	2 km (15)	500 m–2 km (10)	At home (5)
Limping		No Limping (4)	Moderate (2)	Unable to walk (0)
Going up stairs		Unrestricted (4)	Holding the railing (2)	N.m. (0)
Going down stairs		Unrestricted (4)	Holding the railing (2)	N.m. (0)
Standing on one leg		Unrestricted (4)	With support (2)	N.m. (0)
Cross-legged		Unrestricted (4)	With support (2)	N.m. (0)
Radiological criteria
Bone atrophy		None (5)	Trabecula atrophy (3)	Necrosis (0)
Plantar soft tissue		>2 cm (5)	1-2 cm (3)	<1 cm (0)
Leg length difference		None (5)	<2 cm (3)	>2 cm (0)
Mobility w/out a prosthesis		Unrestricted (5)	>10 m (3)	<10 m (0)
Total points (100)	Excellent (>80)	Good (60–79)	Satisfactory (40–59)	Unsatisfactory (<40)