Functional Outcomes Following Hip Core Decompression in Younger Participants With Osteonecrosis

Functional Mobility Assessment (FMA) is a tool that was developed to measure functional mobility in children and adolescents with lower-extremity sarcoma. It is comprised of well-established outcome measures that examine various domains of function. The six categories tested by the FMA include pain, functional mobility, use of assistive devices, satisfaction with quality of gait, participation in the community, and endurance.

Subjects will be required to walk at a self-selected comfortable pace and again at fast speed. Software will then calculate and report the temporo-spatial gait parameters for collection and evaluation by the primary investigator.

Measurements will include hip flexion, hip abduction and adduction, and hip internal and external rotation. Range of motion (ROM) will be attempted on bilateral lower extremities, however if post-operative ROM precautions are implemented, the involved extremity will not be measured. Goniometry is a reliable and valid measure for active and passive ROM when following standardized procedures.