"Reverse roussouly": cervicothoracic curvature ratios define characteristic shapes in adult cervical deformity.
Peter G PassiasKatherine E PierceTyler WilliamsonShaleen ViraStephane Owusu-SarpongRavinderjit SinghOscar KrolLara PassfallNicholas KummerBailey ImboRachel Joujon-RochePeter TretiakovKevin MoattariMatthew V AbolaWaleed AhmadSara NaessigSalman AhmadVivek SinghBassel DieboVirginie LafagePublished in: European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society (2022)
Cervical deformity patients with an increased CL:TK ratio had higher rates of moderate neck disability at baseline, while patients with a negative ratio had higher rates of moderate myelopathy clinically. Specific thresholds for cSVA and TS-CL predicted severe myelopathy or neck disability scores, regardless of baseline neck shape. A thorough evaluation of the cervical spine should include exploration of relationships with the thoracic spine and may better allow spine surgeons to characterize shapes and curves in cervical deformity patients.