Bilateral hip fractures (at present or in the past)

Open hip fracture

Any previous surgical procedures of the hip (ipsilateral / contralateral)

More than 7 days between injury and surgery

Polytrauma (multiple injuries, whereof one or the combination of several injuries is life-threatening)

Patients being pregnant or breast-feeding

Pathologic fractures

Active malignancy

Psychiatric disorders that would preclude reliable assessment (e.g. severe depression)

Drug or alcohol abuse

Patients having participated in any other device or drug related clinical trial within the previous month

Influence of Bone Strength Measured by DensiProbe on Bone Related Fixation Failure