[Dynamic locking screw 5.0--first clinical experience].

Area of Science:

• Orthopedic surgery
• Biomaterials science
• Trauma management

Background:

• Biological plate osteosynthesis aims for optimal fracture healing through mechanical and biological synergy.
• Maintaining soft tissue and blood supply is crucial for secondary bone healing.
• Excessively rigid internal fixation can inhibit callus formation, hindering fracture consolidation.

Purpose of the Study:

• To evaluate the clinical efficacy and safety of the dynamic locking screw (DLS) in large fragment plate osteosynthesis.
• To assess the impact of DLS on fracture healing and mechanical stability.
• To compare the handling and complication profile of DLS with conventional locking screws (LS).

Main Methods:

• A clinical study involving 35 patients treated with DLS5.0 at the Trauma Centre Tuebingen between November 2011 and October 2012.
• Application of large fragment DLS for plate osteosynthesis.
• Evaluation of clinical outcomes, handling characteristics, and complications.

Main Results:

• The dynamic locking screw (DLS) allows for reduced plate osteosynthesis rigidity, positively influencing fracture motion.
• Angular stability advantages are maintained with DLS.
• Initial clinical cases demonstrated good results with DLS5.0, comparable handling to LS5.0, and no DLS-related complications.

Conclusions:

• The dynamic locking screw (DLS) represents a promising advancement in achieving biological plate osteosynthesis.
• DLS facilitates secondary bone healing by allowing controlled micromotion while preserving angular stability.
• Early clinical experience suggests DLS is safe and effective for large fragment osteosynthesis.