Methylmethacrylate hypersensitivity in orthopaedic surgery

Area of Science:

• Orthopaedic Surgery
• Immunology
• Biochemistry

Background:

• Methylmethacrylate monomer (MMA) is widely used in orthopaedic surgery for bone cement fixation.
• Cardiovascular changes can occur during MMA-based cementation, but their underlying mechanisms are not fully understood.
• The role of the complement system in these reactions requires further investigation.

Purpose of the Study:

• To assess the sensitivity to methylmethacrylate monomer in patients undergoing orthopaedic surgery.
• To investigate the potential relationship between cardiovascular reactions during femoral prosthesis cementation and the complement system.

Main Methods:

• Studied 25 patients undergoing orthopaedic surgery with MMA-based cementation.
• Monitored cardiovascular reactions during the procedure.
• Measured serum concentrations of haemolytic complement, complement component 3 (C3), and complement component 4 (C4).

Main Results:

• No correlation was identified between observed cardiovascular reactions and complement system activation.
• Serum concentrations of C3 and C4 did not show a significant relationship with cardiovascular events during cementation.

Conclusions:

• The study found no evidence to support a link between the complement system and cardiovascular reactions during MMA cementation in orthopaedic surgery.
• Further research may be needed to elucidate the mechanisms behind MMA-induced cardiovascular changes.