“…2,6 Risk factors for the development of HO after SCI include complete lesions, thoracic injuries, pneumonia, spasticity, urinary tract infection (UTI), the presence of tracheostomy, pneumonia, and trauma. 8,9 HO typically presents with a non-specific inflammatory reaction including swelling, heat, pain (in cases with intact sensation), and erythema. 3 As HO progresses, it can result in reduced range of motion and, eventually, joint ankylosis.…”