Orthopedic Trauma Glossary
100 terms total — 24 showing — Last updated 15 Sep 2026
Zone of polarizing activity ZPA
Embryonic signaling center controlling digit pattern formation during limb development.
Corticotomy
Surgical division of bone cortex without disrupting the medullary canal or periosteum.
CRIF
Closed reduction and internal fixation - a surgical technique that realigns fractures without open exposure.
CRPS
Complex Regional Pain Syndrome: a chronic pain condition that can develop after trauma or surgery.
damage control orthopedics
Staged surgical approach prioritizing life-saving interventions over definitive fracture repair in critically injured pa...
debridement
Surgical removal of devitalized, contaminated, or infected tissue from a wound.
delayed union
Slower than expected bone healing process that may still progress to complete union given time.
Diaphyseal fracture
A fracture occurring in the shaft or middle portion of a long bone, between the metaphyses.
Distraction osteogenesis
Surgical technique using gradual mechanical distraction to stimulate new bone formation between separated bone segments.
external fixator
Orthopedic device with pins or wires inserted into bone and connected to external frames for fracture stabilization.
fat embolism syndrome
A life-threatening complication where fat particles enter the circulation, typically following long bone fractures.
fracture gap
The space between bone fragments at a fracture site, which may indicate loss of bone length or poor reduction.
fracture hematoma
Blood clot that forms at a fracture site, serving as the initial scaffold for bone healing.
fracture reduction
The process of realigning displaced bone fragments to restore anatomical position and length.
golden hour
The critical first hour after severe trauma when immediate intervention has the greatest impact on patient survival.
Gustilo-Anderson classification
Grading system for open fractures based on wound size, contamination level, and soft tissue damage.
hardware failure
Mechanical failure of internal fixation devices such as broken screws, bent plates, or loosened implants.
hardware prominence
Palpable or visible projection of orthopedic implants through the soft tissues.
heterotopic ossification
Abnormal bone formation in soft tissues following trauma or surgery, particularly around joints.
Interfragmentary compression
Compressive forces applied between fracture fragments to promote primary bone healing and stability.
interfragmentary lag screw
A specialized screw that compresses fracture fragments together by engaging only the far cortex.
intra-articular fracture
Fracture extending into a joint surface, potentially affecting joint mechanics and function.
intramedullary nail
Metal rod inserted into the medullary canal of long bones for fracture fixation and load sharing.
ISS
Injury Severity Score: a standardized anatomical scoring system for patients with multiple trauma.
Kirschner wire
A thin, smooth metallic pin used for temporary or permanent fixation of bone fragments.