Biomechanical model based evaluation of Total Hip Arthroplasty therapy outcome.

Objective: Total-hip-arthroplasties are performed to treat patients with osteoarthritis. Surgical planning is usually based on specific radiographs. These information could also be used as data for biomechanical modelling.

Methods: Models are rarely used during clinical practice. Our aim was to analyze model-based the pre- and postoperatively hip-biomechanic. Pre- and postoperative X-rays of 30 patients were examined by using 4 biomechanical-models.

Results: The received results showed variations e.g. an increase and decrease of hip-load pre- and postoperative.

Conclusion: With the data of these models it would be possible to integrate the amplitude and orientation of the hip-joint-resultant-force into the therapeutical approach.