A method for bone-cement interface thermometry. An in vitro comparison between low temperature curing cement Palavit,...

Area of Science:

• Orthopedic surgery
• Biomaterials science
• Biomedical engineering

Background:

• Bone-cement interface temperatures during curing are critical for preventing thermal necrosis.
• Previous measurements show significant variability, necessitating more precise evaluation methods.

Purpose of the Study:

• To develop and utilize a novel experimental model for precise temperature profiling during bone cement curing.
• To compare the thermal profiles of Palavit and Surgical Simplex P bone cements in an in vitro setting.

Main Methods:

• An in vitro model using isolated pig femurs with standardized defects (12 x 17 mm) was employed.
• Eight thermocouple electrodes were embedded at the bone-cement interface for continuous temperature monitoring.
• Temperature profiles of Palavit and Surgical Simplex P were recorded during cement curing.

Main Results:

• Palavit exhibited a peak interface temperature of 50 +/- 0.5°C, while Surgical Simplex P peaked at 60 +/- 0.7°C.
• Core temperatures reached 70 +/- 0.8°C for Palavit and 95 +/- 2.2°C for Surgical Simplex P.
• Surgical Simplex P demonstrated significantly higher peak temperatures at both the interface and core.

Conclusions:

• The developed experimental model provides precise temperature measurements during bone cement curing.
• Surgical Simplex P generates substantially higher temperatures than Palavit, a critical factor in potential thermal damage to bone tissue.
• These findings have implications for selecting bone cements to minimize intraoperative thermal risks in orthopedic surgery.