Janus Duus Christiansen

Janus Duus Christiansen serves as a Senior Physician (Afdelingslæge) in the Department of Orthopaedic Surgery at Aalborg University Hospital, affiliated with the Faculty of Medicine at Aalborg University. His clinical expertise centers on orthopaedic surgery with specialization in hip arthroplasty procedures.

His research focuses on ultra-short femoral neck-preserving hip prostheses, particularly the Primoris® stem, investigating bone remodeling patterns, prosthetic fixation stability, and long-term clinical outcomes. Key methodologies include radiostereometric analysis (RSA) and dual-energy X-ray absorptiometry (DXA) for precise biomechanical assessment of bone-implant interactions.

Recent publications (2020-2024) demonstrate consistent investigation of 2-5 year outcomes for short-stem prostheses, revealing stable fixation and favorable bone remodeling trajectories. His work emphasizes the biomechanical advantages of femoral neck preservation in hip replacement surgery.

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