There are many methods by which forensic anthropologists and bioarchaeologists estimate the age at death of an individual. Many of these methods, however, are flawed. Currently, anthropologists within these fields are researching which of these methods are accurate, which are flawed and how flawed they are, how to fix these inaccuracies, and creating new methods of age at death estimation. The pelvis is the second most accurate age identifier after dentition, but there are many aspects of life that can change the physical appearance of the specific age identification features. Osteoarthritis is a degenerative bone disease that affects joints. This pathology usually appears in individuals 50 years of age and older but hard labor, trauma, and disease can cause osteoarthritis to form earlier in life. Early onset osteoarthritis is being seen in more of today’s youth due to the high physical activities within their lives. This can cause errors to be made when estimating age at death of an individual younger than 50 that has joint diseases or traumas. This study seeks to find how osteoarthritis affects how we estimate chronological age at death. Using the Suchey-Brooks (1982) and Buckberry-Chamberlain (2002) methods of age estimation, age at death was estimated for 30 individuals of the Western Carolina John A. Williams collection. Known age was compared to estimated age to calculate error. Osteoarthritis was then observed on the vertebral column, pelvis, and femora. I found that there were many inaccuracies in age estimation that did indeed correlate to the presence of osteoarthritis in the individual.