Three dimensional measurements of pelvic tilt in trans-tibial amputations: the effects of pelvic tilt on trunk muscles strength and characteristics of gait.

The aim of this study was to determine the degree of pelvic tilt in the three dimensions, the trunk muscle strength and effects on gait in trans-tibial amputated patients. This study comprised of 22 unilateral trans-tibial amputated patients who were seen at the authors' Prosthetics and Orthotics Laboratory for the purpose of prosthetic provision. Measurements were made using plurimeter and caliper and gait observations were made by video camera. In the sagittal and horizontal planes respectively the pelvic tilt was measured to be 12 degrees and 5.73 degrees, and such measurements in relation to the trunk extensor and flexor muscles were shown to be statistically significant (p < 0.05). On the contrary, the same could not be said for frontal plane measurements. In addition, in 9 cases excessive knee flexion was noted during the stance phase having a direct influence on the pelvic tilt (p < 0.05).