Comparative effects of two calcaneal lengthening osteotomies (Hintermann vs. Evans) in stage II adult-acquired flatfoot

Table 5 Degenerative changes according to Kellgren & Lawrence classification (A, B and C)

A. Degenerative changes for talonavicular joint
	Kellgren & Lawrence classification					P Value
	0	I	II	III	IV	P Value
H-LCL
Pre-op TN	90(97.8%)	2(2.2%)	0	0	0
						0.0932
Post-op TN	84(91.3%)	7(7.6%)	1(1.1%)	0	0
E-LCL
Pre-op TN	56(98.2%)	1(17.5%)	0	0	0
						0.0592
Post-op TN	48(84.2%)	6(10.5%)	3(5.3%)	0	0
H-LCL vs. E-LCL						0.4950

B. Degenerative changes for Calcaneocuboid joint
	Kellgren & Lawrence classification					P Value
	0	I	II	III	IV	P Value
H-LCL
Pre-op CC	91(98.9%)	1(1.1%)	0	0	0
						0.0425
Post-op CC	86(93.5%)	4(4.3%)	2(2.2%)	0	0
E-LCL
Pre-op CC	57(100%)	0	0	0	0
						0.0124
Post-op CC	40(70.2%)	9(15.8%)	6(10.5%)	2(3.5%)	0
H-LCL vs. E-LCL						0.1040

C. Degenerative changes for Subtalar joint
	Kellgren & Lawrence classification					P Value
	0	I	II	III	IV	P Value
H-LCL
Pre-op Subtalar	92(100%)	0	0	0	0
						0.0111
Post-op Subtalar	86(93.5)	5(5.4%)	1(1.1%)	0	0
E-LCL
Pre-op Subtalar	57(100%)	0	0	0	0
						0.0079
Post-op Subtalar	43(75.4%)	11(19.3%)	3(5.3%)	0	0
H-LCL vs. E-LCL						0.1275

H-LCL, Hintermann lateral column lengthening; E-LCL, lateral column lengthening; TN, talonavicular; CC, calcaneocuboidal

ISSN: 1471-2474