What it is
Sacroiliac joint fusion uses implants to stabilise the joint between the sacrum and ilium. It is considered for persistent sacroiliac pain that has failed structured rehabilitation and targeted injections.
Rehabilitation protects the fusion, restores gait and single-leg control, and rebuilds hip and trunk strength for daily tasks.
What happens when it occurs
Implants stabilise the joint, so painful motion is reduced. Early walking is short and frequent. Strength and range progress in stages with clinical review.
Common indications and pre‑operative factors
- Persistent sacroiliac pain confirmed by diagnostic injections
- Failure of a comprehensive rehabilitation programme
- Impact of pain on work or caring roles
Who is most affected
Adults with long-standing sacroiliac pain. Women present more often than men in Australian clinics.
Typical symptoms before surgery
- Pain near the dimple at the back of the pelvis on one side
- Pain with rolling in bed, stairs, or transfers
- Difficulty with single-leg tasks
When to seek care
Surgical review when pain persists despite the best conservative care.
How we diagnose
History, cluster of provocation tests, lumbar and hip screening, and image-guided diagnostic injections.
Management
- Protected mobility and wound care
- Gait retraining with stride symmetry
- Hip and gluteal strength, deep abdominal endurance
- Return to work plan with clear criteria
Rehabilitation milestones
Phase 1 weeks 0 to 2: short walks, basic control drills, sleep support.
Phase 2 weeks 2 to 6: progressive hip and trunk strength, task practice.
Phase 3 weeks 6 to 12: single leg endurance, return to work by criteria.
Readiness to progress
- Walking and transfers without pain
- Hip and trunk strength targets met
- Single-leg tasks are controlled and strong
Long-term care
- Maintain hip and trunk conditioning
- Balance single-leg training in sport and the gym
- Plan recovery weeks during heavy workloads
Australia snapshot
- Performed in specialist centres in Australia for selected patients
- Women present more often than men
- Strong outcomes when surgery follows a clear diagnosis and skilled rehabilitation
Latest insights
Stabilise the joint, then rebuild the chain around it.
Gait and single-leg control are the pillars of recovery.
