{
  "abstract": "Application for ESRA Abstract Prizes:Background and Aims Synovial chondromatosis is a rare, benign metaplastic condition of the synovium, characterized by the formation of intra-articular cartilaginous nodules. In advanced stages, joint degeneration may necessitate total knee replacement (TKR). While spinal anesthesia is standard for lower limb arthroplasty, data on its use in rare joint disorders are limited. This case report outlines the anesthetic management of a patient with synovial chondromatosis undergoing TKR under spinal anesthesia.Methods A 66-year-old male, ASA II, with progressive right knee synovial chondromatosis was scheduled for elective TKR. Spinal anesthesia was performed at the L3-L4 interspace using a 22G pencil-point needle. A total of 3 mL of 0.75% isobaric ropivacaine combined with 20 μg fentanyl was administered. Sensory and motor block onset, intraoperative hemodynamics, surgical conditions, and postoperative analgesia were evaluated.Results A sensory block up to T12 was achieved within 4 minutes, with full motor blockade (Bromage 3). Intraoperative conditions were excellent, and the patient remained hemodynamically stable throughout the 120-minute procedure. No additional sedation or analgesia was required. Postoperative analgesia was satisfactory for 6 hours, with no need for rescue medication. No neurological or anesthetic complications were reported.Abstract P267 Figure 1Multiple cartilaginous nodules varying in size, dispersed within the synovial cavityAbstract P267 Figure 2Intraoperative specimen of synovial chondromatosis from the right knee jointConclusions This case supports the efficacy and safety of spinal anesthesia with ropivacaine-fentanyl combination in complex orthopedic procedures involving rare joint diseases. Regional anesthesia remains a reliable and adaptable technique for individualized perioperative management.",
  "authors": [
    {
      "affiliations": [
        "Department of Anesthesiology, General Hospital of Ioannina ‘G. Hatzikosta’, Ioannina, Greece"
      ],
      "name": "Apostolos Ntanasis"
    },
    {
      "affiliations": [
        "Department of Anesthesiology, General Hospital of Ioannina, Ioannina, Greece"
      ],
      "name": "Elisavet Melissi"
    },
    {
      "affiliations": [
        "Department of Anesthesiology, General Hospital of Ioannina ‘G. Hatzikosta’, Ioannina, Greece"
      ],
      "name": "Elpida Bletsa"
    },
    {
      "affiliations": [
        "Department of Anesthesiology, General Hospital of Ioannina ‘G. Hatzikosta’, Ioannina, Greece"
      ],
      "name": "Evangelos Sitos"
    },
    {
      "affiliations": [
        "Department of Anesthesiology, General Hospital of Ioannina, Ioannina, Greece"
      ],
      "name": "Ntaflou Aikaterini"
    },
    {
      "affiliations": [
        "Department of Anesthesiology, General Hospital of Ioannina ‘G. Hatzikosta’, Ioannina, Greece"
      ],
      "name": "Freideriki Steliou"
    }
  ],
  "title": "P267 Uncommon joint, common technique: spinal anesthesia in synovial chondromatosis knee replacement",
  "uid": "a6a745e8-6884-5ce5-a336-d2c86898b37a"
}