title: Extrinsic thoracic spinal cord compression related to supine position: from diagnosis to the creation of a spinal protection shield.
abstract: BACKGROUND
  Rapidly progressing extrinsic spinal cord compression syndromes are rare, especially when the compression is associated with the supine position.
  
  
  OBJECTIVE
  This work presents a case of extrinsic thoracic spinal cord compression related to the supine position and describes our approach from diagnosis to the technical therapeutic creation of a spinal protection shield.
  
  
  METHODS
  One case of a patient suffering from extrinsic spinal cord compression syndrome is reported.
  
  
  METHODS
  We report the case of a Coptic priest patient who, as a result of Pott disease sequelae, underwent several decompressive and stabilizing surgeries for major kyphoscoliosis. Consequently, he developed extrinsic thoracic spinal cord compression caused by the supine position.
  
  
  METHODS
  After each instrumentation device removal, we noticed progressive severe paraparesis when the patient was supine. Imaging assessment confirmed spinal dynamic and intermittent compressions triggered by the supine position, which was facilitated by the exposure and vulnerability of the thoracic spine cord.
  
  
  METHODS
  We implanted a tailored titanium mesh spinal protection shield and a trapezius flap for spine coverage. This work presents the diagnostic aspects as well as several surgical technique options.
  
  
  RESULTS
  At the 6-year follow-up, the patient's neurologic conditions were significantly improved. We report neurologic improvements, no sphincter disorder, persistent spasticity, and lower limbs weakness not affecting full ambulation.
  
  
  CONCLUSIONS
  To our knowledge, no other case of spinal protection shield in compressions caused by the supine position have been studied. The surgical and technical management therefore remains innovative.
authors.affiliation: Department of Orthopaedics Surgery, Institut Mutualiste Montsouris, 42 Boulevard Jourdan, 75014 Paris, France.
authors.forename: L
authors.initials: L
authors.lastname: Ajavon
authors.affiliation: Department of Orthopaedics Surgery, Institut Mutualiste Montsouris, 42 Boulevard Jourdan, 75014 Paris, France. Electronic address: aymmed@hotmail.fr.
authors.forename: A
authors.initials: A
authors.lastname: Amelot
authors.affiliation: Department of Orthopaedics Surgery, Institut Mutualiste Montsouris, 42 Boulevard Jourdan, 75014 Paris, France.
authors.forename: C
authors.initials: C
authors.lastname: Conso
authors.affiliation: Department of Orthopaedics Surgery, Institut Mutualiste Montsouris, 42 Boulevard Jourdan, 75014 Paris, France.
authors.forename: L
authors.initials: L
authors.lastname: Balabaud
authors.affiliation: Department of Orthopaedics Surgery, Institut Mutualiste Montsouris, 42 Boulevard Jourdan, 75014 Paris, France.
authors.forename: C
authors.initials: C
authors.lastname: Mazel
mesh_terms: D019299:Decompression, Surgical / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D016268:Internal Fixators / Q000009:adverse effects; D008297:Male; D013117:Spinal Cord Compression / Q000209:etiology / Q000601:surgery*; D016683:Supine Position; D013904:Thoracic Vertebrae / Q000601:surgery; D014399:Tuberculosis, Spinal / Q000150:complications / Q000601:surgery*
keywords: Cord compression; Extrinsic compression; Pott disease; Spinal cord shield; Supine position; Surgical management