Cartilage contact pressure elevations in dysplastic hips: a chronic overload model

Table 3 Summary statistics between age-matched control and all DDH patients' hips

Peak Pressure (MPa)	P-value	Asymptomatic Mean ± S.D.	DDH Mean ± S.D.	Normal
Acetabulum		5.25 ± 1.02	6.59 ± 1.90	1.75
Normal v. Asymptomatic	0.0339
Asymptomatic v Symptomatic	0.0729
Femoral Head		6.11 ± 0.87	7.71 ± 2.41	1.89
Normal v. Asymptomatic	0.0116
Asymptomatic v Symptomatic	0.0302
Acetabulum v. Femoral Head	0.0021
Cumulative Pressure (MPa)
Acetabulum		3.67 ± 1.02	4.61 ± 1.40	1.15
Normal v. Asymptomatic	0.0761
Asymptomatic v Symptomatic	0.0756
Femoral Head		4.24 ± 0.81	5.39 ± 1.43	1.23
Normal v. Asymptomatic	0.0268
Asymptomatic v Symptomatic	0.0762
Acetabulum v. Femoral Head	0.0075
Chronic Overpressure (MPa-sec/cycle)
Acetabulum		2.20 ± 1.26	3.30 ± 1.77	0
Normal v. Asymptomatic	0.1865
Asymptomatic v Symptomatic	0.0402
Femoral Head		2.84 ± 1.02	4.08 ± 2.20	0
Normal v. Asymptomatic	0.0642
Asymptomatic v Symptomatic	0.0758
Acetabulum v. Femoral Head	0.0157
Contact Area (mm ² )
Acetabulum		663 ± 55	569 ± 97	2233
Normal v. Asymptomatic	0.0008
Asymptomatic v Symptomatic	0.2482
Femoral Head		621 ± 53	614 ± 183	2265
Normal v. Asymptomatic	0.0023
Asymptomatic v Symptomatic	0.7537
Acetabulum v. Femoral Head	0.5993

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