Spinal FusionExamining Effects of Spinal Fusion on Outcomes Following Total Hip Replacement

Any patient who has undergone spine fusion (SF) and total hip arthroplasty (THA). Patients will undergo x-ray imaging and complete functional assessment questionnaires. Patients may additionally be asked to participate in a gait analysis in a Human Movement Laboratory.

Any patient who has had THA only (no spine fusion surgery). Patients will undergo x-ray imaging and complete functional assessment questionnaires. Patients may additionally be asked to participate in a gait analysis in a Human Movement Laboratory.

Any patient who has had spine fusion only (no hip replacement surgery). Patients will undergo x-ray imaging and complete functional assessment questionnaires.

X-Ray imaging in the following positions: Lateral standing, lateral seated, standard standing AP pelvis and AP pelvis lying down.

Certain patients may be asked to participate in a motion analysis procedure at the Human Movement Laboratory at the University of Ottawa. This procedure takes approximately 1.5 hours and you will only be asked to participate in the motion analysis procedure once. Participants will change into a custom-designed tight body suit, which has reflective markers on its surface for infrared video capture. Participants will then have pairs of surface electromyography (EMG) electrodes placed on certain areas of the skin on the legs and on the back. Wearing the EMG electrodes and marker suit, participants will perform 5 trials of walking on a level walkway, walking up and down a 3-step staircase, sitting from a standing position, and standing from a seated position.