Which type of fracture is commonly associated with child abuse?

The association of posterior rib fractures with child abuse is well-documented in the field of pediatric medicine and child advocacy. Posterior rib fractures are particularly indicative of non-accidental trauma because they often result from the forceful gripping or shaking of an infant or young child, which can occur during episodes of abuse.

In children, the ribs are more flexible than in adults, making them less prone to fracture from typical activities or falls. This flexibility means that fractures in these areas, especially when multiple and in various stages of healing, raise suspicion for abuse rather than accidental injury. Additionally, posterior rib fractures are less likely to happen as a result of play or typical childhood accidents, further supporting the link to abusive behavior.

In contrast, while other types of fractures, such as spiral or simple fractures, can occur due to abuse, they might also occur from regular childhood activities or accidents. Therefore, the specificity of posterior rib fractures in indicating abuse makes this choice the most correct answer in this context.