Periarticular Fracture
Medical term: Periarticular (Joint-Line) Fracture
Overview
A periarticular fracture is a broken bone located near a joint — often involving the joint surface itself. Because the cartilage of a joint must glide smoothly to allow pain-free motion, fractures in this area require exceptional precision to treat well. Even small imperfections in the way the joint surface heals can lead to post-traumatic arthritis, stiffness, and chronic pain years later.
Managing periarticular injuries is a cornerstone of fellowship trauma training. At our San Diego practice, each of our surgeons completed advanced fellowship training focused in part on the complex techniques needed to restore anatomy and stability around injured joints.
Common Periarticular Fractures
Virtually every major joint in the body can be affected by a periarticular fracture. The injuries we most commonly treat include:
- Tibial plateau fractures — fractures of the upper tibia involving the knee joint surface
- Pilon (tibial plafond) fractures — high-energy fractures of the lower tibia at the ankle joint
- Distal humerus fractures — fractures of the lower arm bone involving the elbow joint
- Distal femur fractures — fractures of the lower thigh bone involving the knee joint
- Distal radius fractures — wrist fractures that extend into the joint surface
- Proximal humerus fractures — shoulder-side fractures that may involve the ball of the shoulder joint
- Acetabular fractures — fractures of the hip socket
Why They Matter
The joint surface, or articular cartilage, is the smooth tissue that allows bones to glide against one another. When a fracture disrupts this surface, the goal of treatment is to restore it as close to its original shape as possible — a concept called anatomic reduction. Small displacements that would be acceptable in the middle of a bone can be unacceptable at a joint line, where they may cause premature wear and arthritis.
Because of this, periarticular fractures often require:
- Advanced imaging, usually a CT scan in addition to X-rays, to fully characterize the fracture fragments
- Specialized implants, such as anatomic locking plates designed for specific joint regions
- Meticulous surgical technique, with soft tissue preservation and precise reduction of the joint surface
- Individualized rehabilitation, balancing early motion to prevent stiffness with protection of the repair
Treatment
Most displaced periarticular fractures require open reduction and internal fixation (ORIF) — surgical exposure of the fracture, reassembly of the joint surface, and stabilization with plates, screws, or specialized hardware. In some cases, a staged approach is used: an external fixator is placed first to calm down severely swollen or injured soft tissues, followed by definitive fixation once the skin and muscles are ready.
Non-surgical treatment may be appropriate for stable, non-displaced fractures that will hold their position in a brace or cast while healing.
Recovery
Rehabilitation after a periarticular fracture is often as important as the surgery itself. Early range of motion — usually within days of surgery — helps prevent permanent stiffness. Weight bearing is typically restricted for six to twelve weeks depending on the injury. Physical therapy is essential to regain strength, motion, and function.
If you have sustained a fracture around a joint, an experienced trauma surgeon can offer the precise surgical technique and attentive rehabilitation needed to protect your long-term joint function. Contact our San Diego office to schedule an evaluation.