Definition & Operational Usage of Joint Dislocation
What Is Joint Dislocation?
A joint dislocation is a traumatic orthopedic emergency where bone ends forming a joint (commonly shoulder, anterior hip, patella, or elbow) are completely displaced from their anatomical articulation, threatening severe pain, nerve compression, and vascular compromise.
Why Joint Dislocation Matters on the Fireground
Dislocations can compress major peripheral arteries and nerves (such as the axillary nerve in shoulder dislocations or popliteal artery in knee dislocations). EMS must assess distal pulses, sensation, and motor function (CSM) before and after splinting.
Relevant NFPA Standards
- NREMT Standards: National Registry of Emergency Medical Technicians Practice Standards
- NFPA 455: Standard for Emergency Medical Services (EMS)
Field Procedures & Tactical Steps
- Assess Distal Circulation, Sensation, and Motor function (CSM / PMS) in the affected limb.
- Immobilize and splint the dislocated joint in the position found using rigid, SAM, or pillow splints.
- Apply cold packs wrapped in a towel to reduce localized swelling and severe pain.
- Administer IV/IN analgesia (Fentanyl or Morphine) per paramedic protocols for severe pain management.
- Re-assess distal CSM every 10 minutes and immediately report lost distal pulses to receiving hospital.
Common Context & Application
Encountered on trauma calls, sports injuries, motor vehicle crashes, falls, and industrial machinery accidents.
Frequently Asked Questions about Joint Dislocation
Why is a posterior knee dislocation considered a surgical emergency?
What does CSM stand for in orthopedic trauma evaluation?
Other Names for Joint Dislocation
Joint Dislocation may also appear in training materials, NFPA standards, or department SOPs as: dislocated joint, bone displacement.
Relevant Tools
Operational calculators related to Joint Dislocation: