英语语法分析

Lateral AA joint degeneration had relation to occipitocervical pain.

AA外侧关节退变与枕颈区痛有相关性。

The most frequent method used to treat this condition is occipitocervical fusion.

这类患者治疗最常采用枕颈融合术。

Objective. To describe survival and outcomes after occipitocervical dissociation injuries.

研究目的： 描述寰枕关节分离损伤后的生存率和结局。