Weak quadriceps, hip instability, pain and arthritis may be non-prosthetic sources of the deviation. Hip Flexor Weakness Gait - YouTube In these aforementioned conditions, the abductor muscles are normal but they have a mechanical disadvantage. The alterations in normal gait can be caused by different deformities, injuries, weakness, disease, or pain in any part of the body. During the stance phase of gait, the pelvis tilts downwards on the weight-bearing extremity and hikes up on the non-weight bearing extremity. This is because the muscle does not work as hard as if the person were standing. In instrumental analysis sophisticated equipment such as computerized motion analysis equipment, force platforms, stroboscopic photography, cinematography, electro-goniometers and electromyography are used to assess spatial, time and temporal variables. Lower extremity joint moments obtained from the gait analysis were used to drive an induced acceleration model which determined each moments contribution to upright support, forward progression, and hip joint acceleration. Observation of the patients gait from the side enables the examiner to detect stride and step length deficiencies as well as motion of the trunk and lower extremity in the sagittal plane, including the extensor or gluteus maximus lurch in which the patient thrusts the trunk posteriorly to compensate for weak hip extensors (gluteus maximus muscle). Weak hip flexors can affect a persons posture and the way they walk. Perry J, Clark D. Biomechanical abnormalities of post-polio patients and the implications for orthotic management. Trendelenburg gait is an abnormal gait caused by weakness of the hip abductors. Additional information such as metabolic testing, measures of joint function, and long-term outcome studies may be helpful in identifying which of the observed compensatory strategies are best or optimal for any one individual. Gait disorders often show up as altered distance and time variables. Slowly lift and lower the leg to strengthen the psoas muscle. The results from this case series have clinical and research implications. Bohm P, Brzuske A. Salter innominate osteotomy for the treatment of developmental dysplasia of the hip in children: results of seventy-three consecutive osteotomies after twenty-six to thirty-five years of follow-up.
