From: Cartilage contact pressure elevations in dysplastic hips: a chronic overload model
Control | Patient 1 | Patient 2 | Patient 3 | Patient 4 | Patient 5 | Patient 6 | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Right | Left | Right | Left | Right | Right | Left | Right | Left | Right | Left | Right | |
Normal | asym | DDH | DDH | DDH | asym | DDH | asym | asym | DDH | DDH | asym | |
Severin Classification | I | I | I | I | I | I | II | I | I | II | III | I |
Acetabulum | ||||||||||||
Increment | 12 | 12 | 5 | 12 | 12 | 12 | 12 | 6 | 12 | 5 | 12 | 12 |
Max pressure (MPa) | 1.754 | 4.945 | 6.984 | 3.563 | 8.298 | 4.922 | 5.25 | 4.526 | 7.05 | 6.87 | 8.587 | 4.83 |
Max cum press (MPa-sec/cycle) | 1.145 | 3.192 | 4.686 | 2.447 | 4.699 | 3.108 | 3.835 | 3.463 | 5.48 | 5.44 | 6.553 | 3.107 |
Max chronic press (MPa-years) | 0 | 1.926 | 3.399 | 0.566 | 3.416 | 1.403 | 2.323 | 1.852 | 4.41 | 4.36 | 5.764 | 1.402 |
Femoral Head | ||||||||||||
Increment | 12 | 12 | 4 | 12 | 12 | 9 | 12 | 3 | 12 | 5 | 12 | 12 |
Max pressure (MPa) | 1.89 | 6.462 | 7.758 | 3.582 | 9.58 | 6.096 | 6.345 | 5.15 | 7.38 | 9.88 | 9.091 | 5.48 |
Max cum press (MPa-sec/cycle) | 1.229 | 4.702 | 5.323 | 3.366 | 6.604 | 3.815 | 3.965 | 3.827 | 5.43 | 6.62 | 6.437 | 3.45 |
Max chronic press (MPa-years) | 0 | 3.419 | 4.206 | 0.463 | 5.828 | 2.298 | 2.487 | 2.313 | 4.34 | 5.85 | 5.617 | 1.829 |