Musannaf Ibn Abi Shayba 18:391

Abu Bakr narrated to us, he said: Yazid bin Harun narrated to us, from Abu Salim, from al-Sha’bi, from Zayd bin Thabit regarding the shin (bone) if it is broken: fifty dinars. And if it heals with a deformity (athm), then in it is fifty dinars. And regarding the deformity (athm) itself, there is what is in it (i.e., a separate compensation).