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Novel Diagnostics in Revision Arthroplasty: Implant Sonication and Multiplex Polymerase Chain Reaction

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RANK, RANKL and OPG in inflammatory arthritis and periprosthetic osteolysis.

C T Ritchlin¹, E M Schwarz, R J O'Keefe

¹The Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester 14642, USA.

Journal of Musculoskeletal & Neuronal Interactions

|December 24, 2004

Summary

The receptor activator of nuclear factor kappa B (RANK) and its signaling pathway are key to bone resorption in inflammatory arthritis and implant loosening. Anti-RANKL therapy shows promise for these conditions.

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Area of Science:

Bone Biology and Metabolic Diseases
Immunology and Inflammation
Orthopaedic Surgery

Background:

The RANK-RANKL-OPG pathway is central to bone resorption, impacting metabolic bone diseases.
RANK-RANKL signaling drives bone erosions in inflammatory arthritis and aseptic loosening of implants.

Purpose of the Study:

To review the roles of RANK, RANKL, and OPG in erosive arthritis and periprosthetic osteolysis.
To discuss the therapeutic potential of targeting the RANK-RANKL pathway for these conditions.

Main Methods:

Literature review focusing on the RANK-RANKL-OPG system.
Analysis of therapeutic responses in inflammatory arthritis and periprosthetic osteolysis.

Main Results:

RANK-RANKL pathway activation is critical for bone resorption in specific joint diseases.
Bisphosphonates show limited efficacy in inflammatory joint and periprosthetic osteolysis.
Anti-cytokine therapy is effective in rheumatoid and psoriatic arthritis.

Conclusions:

The RANK-RANKL pathway is a significant target for managing bone loss in inflammatory arthritis and periprosthetic osteolysis.
Anti-RANKL therapy presents a potential treatment strategy for these debilitating conditions.