Dynamic Locking Screws 5.0 vs. Standard Locking Screws in Fracture of Distal Femur Treated With Locked Plate Fixation

Inclusion Criteria:

- 21 years and older

- Closed or open distal femur fracture (AO 33 A1-3, 33 C1-3) including distal femur
fractures above a total knee arthroplasty

- Ability to walk independently prior to injury

- Eligible for treatment with ORIF of the distal femur with a large fragment locking
plate (LISS, LCP)

- Willing and able to comply with post-operative protocol and return for follow-up.

- Ability to understand the content of the patient information / informed consent form
and participate in the clinical investigation

- Signed informed consent

Exclusion Criteria:

- Additional ipsi- or contralateral lower extremity fracture

- Any kind of implant at the ipsilateral proximal femur

- Pre-existing malunion or nonunion of the ipsilateral lower extremity

- Segmental bone defect requiring bone grafting

- More than 4 weeks between injury and surgery

- Pathologic fracture due to a disease other than osteoporosis (eg, tumor, metastasis)

- Polytrauma

- Active malignancy

- Any not medically managed severe systemic disease

- Recent history of substance abuse (ie, recreational drugs, alcohol) that would
preclude reliable assessment

- Pregnancy or women planning to conceive within the study period

- Prisoner

- Participation in any other medical device or medicinal product study within the
previous month that could influence the results of the present study