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Summary This case series describes three cases of osseous cyst‐like lesions of the proximal phalanx (P1), which were associated with a complete fracture. The fractures and osseous cyst‐like lesions were analysed through radiographic and computed tomographic (CT) images for fracture configuration and prodromal factors, such as subchondral sclerosis and periosteal new bone formation. Internal stabilisation was performed in all cases through placing transcortical bone screws under CT guidance. In conclusion, the presence of osseous cyst‐like lesions in the proximal P1 as well as the addition of prodromal markers, such as localised periosteal new bone formation and subchondral bone sclerosis, suggest pathological subchondral bone with the potential to fracture and stabilisation should be prioritised.
Ammann et al. (Thu,) studied this question.
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