Brief communication: bone remodeling rates: a test of an algorithm for estimating missing osteons

Area of Science:

• Forensic Anthropology
• Bioarchaeology
• Skeletal Biology

Background:

• Estimating bone remodeling rates is crucial for understanding skeletal health and age.
• In vivo labeling methods are not feasible for archaeological skeletal remains.
• Frost's algorithm (1987a) offers a potential method to estimate missing osteons from observed osteon population densities (OPD).

Purpose of the Study:

• To validate Frost's algorithm for estimating missing osteons.
• To assess the accuracy of the algorithm in determining bone remodeling rates (activation frequency [mu RC] and bone formation rate [Vf,r,t]).
• To determine the suitability of the algorithm for application to archaeological skeletal remains.

Main Methods:

• The algorithm was tested on a sample of 44 autopsy-obtained ribs.
• Estimates of activation frequency (mu RC) and bone formation rate (Vf,r,t) were generated using the algorithm.
• Algorithm-derived values were compared with age-matched tetracycline-based values.

Main Results:

• Estimates of activation frequency (mu RC) and bone formation rate (Vf,r,t) from the algorithm were in reasonable agreement with tetracycline-based values.
• Mean values generated by the algorithm were generally lower than empirical values.
• Discrepancies fell below 1 standard error for ages above the 5th decade.

Conclusions:

• Frost's algorithm provides a valid method for estimating missing osteons and bone remodeling rates.
• The algorithm is suitable for use with archaeological skeletal remains where in vivo data is unavailable.
• Further application of this algorithm can enhance the study of bone remodeling in past populations.