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anterior (SA)—the buttocks face anteriorly.
***Sacrum posterior (SP)—the buttocks face posteriorly.
** Shoulder presentations with transverse lie are classified into four types, based on the location of the scapula (shoulder blade). This presentation needs to be delivered by cesarean section.
***Left scapula-anterior (LSA)
***Right scapula-anterior (RSA)
***Left scapula-posterior (LSP)
***Right

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