Analysis of Spatiotemporal Gait Parameters in Patients With Megaprosthesis.

Comparative Analysis of Spatiotemporal Gait Parameters in Patients With Distal Femoral Megaprosthesis and Healthy Subjects Using an Inertial Measurement Unit (IMU)

The main objective of the study is to evaluate spatiotemporal parameters of gait in tumoral patients with megaprosthesis of the distal femur.

Patients with distal femoral prostheses treated at La Fe Hospital in Valencia were evaluated and compared with healthy controls. A radiographic study was conducted in cases using telemetric imaging to assess the percentage of remaining bone and the long length limb discrepancy following surgical intervention. Additionally, a gait analysis was performed using the BTS device to obtain objective gait parameters. The gait assessment was conducted with a non-invasive portable device, the BTS G-sensor inertial sensor (BTS Bioengineering, Garbagnate Milanese, Italy), which was placed at the S1 level to collect spatio-temporal gait data. The data were analyzed in relation to the values in healthy patients.

Inclusion Criteria:

• Megaprosthesis of the distal femur
• Tumor cause
• Surgery at Hospital la Fe.
• Traditional stem or biological ossteointegration system
• Minimum postoperative follow-up period of 3 months

Exclusion Criteria:

• Neurological alterations prior to the intervention that affect the lower limbs or general movement.
• Patient incapable of ambulation due to progression of his/her pathology
• Patient at home with palliative treatment for advanced tumor disease
• Any ipsilateral or contralateral prosthesis.
• Infectious or traumatic cause