Early Ultrasound Screening of Heterotopic Ossification After Severe Neurological Trauma

Inclusion Criteria: * Patients ⩾ 18 years; * Admitted to a neurological post intensive care rehabilitation unit for the first time; * Hospitalized in ICU before being admitted to PICRU for a for traumatic brain injury (initial Glasgow coma scale \< 14 and brain radiological abnormalities at the time of admission to ICU and / or a traumatic spinal cord injury (para- or tetraplegia with at least half of key muscles of the 2019 ISNCSCI classification with a strength of less than 3 below the neurological level of the injury at the time of admission to PICRU); * Patient's written consent obtained (or from an authorized relative); * Affiliation to a social security scheme. Exclusion Criteria: * History of moderate or severe traumatic brain injury; * History of spinal cord injury (para- or tetraplegia); * History of stroke or disabling neurological disease; * History of hospitalization in neurological or neurosurgical or traumatological ICU for another reason; * Breast-feeding or pregnancy; * Under court protection.