Modern Study Review (AI-Generated)
High-Yield Summary
Inflammatory arthritis encompasses a spectrum of autoimmune diseases including rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), ankylosing spondylitis (AS), and psoriatic arthritis (PsA). Preoperative planning for orthopaedic surgery in these patients requires meticulous assessment of systemic involvement, infection risk, bone quality, and medication management to optimize outcomes. Understanding disease-specific complications such as cervical spine instability in RA and pulmonary restrictions in AS is critical for safe anesthesia and surgical intervention. Modern management balances immunosuppression control with infection prevention and addresses complex soft tissue and bone challenges.
Key Diagnostic Findings
| Aspect | Details |
|---|---|
| Anatomy & Pathophysiology | Chronic synovitis causing joint destruction, soft tissue contractures, periarticular osteopenia, and deformity. Cervical spine instability (atlanto-axial and atlanto-occipital) common in RA. |
| Clinical Presentation | Joint pain, swelling, deformity, limited range of motion, systemic symptoms (fatigue, anemia). PsA patients may have skin lesions increasing infection risk. |
| Imaging | X-rays: joint space narrowing, erosions, subluxations. MRI/CT: cervical spine instability, soft tissue assessment. Pulmonary function tests for restrictive lung disease in AS. |
| Classification Systems | Disease-specific: e.g., ACR/EULAR criteria for RA; Modified New York criteria for AS; CASPAR criteria for PsA. No specific surgical classification but use of Larsen or Sharp scores for joint damage severity. |
Current Gold Standard Treatment
| Treatment Aspect | Indications & Considerations |
|---|---|
| Non-Operative | Optimize disease control with DMARDs/biologics; manage anemia and pulmonary status preoperatively; physical therapy for soft tissue flexibility. |
| Operative Indications | Severe joint destruction causing pain and functional limitation refractory to medical therapy; deformity correction; instability (e.g., cervical spine fusion if symptomatic or high risk). |
| Surgical Planning | Preoperative cessation of immunosuppressants (methotrexate, steroids) balanced against flare risk; careful airway management with awake fiberoptic intubation if cervical instability suspected; pulmonary evaluation in AS. |
| Fixation Strategy | Prefer cemented implants in RA due to poor bone quality; anticipate complex soft tissue releases and ligament balancing. |
Modern Complications & Outcomes
| Complication | Notes |
|---|---|
| Infection | Increased risk, especially in PsA (skin colonization) and RA (immunosuppression). Prophylactic antibiotics and perioperative infection control critical. |
| Cervical Spine Injury | Undiagnosed instability may cause catastrophic spinal cord injury during intubation. Preop imaging mandatory. |
| Poor Bone Quality | Leads to higher rates of implant loosening, especially with cementless fixation in RA. |
| Soft Tissue Challenges | Contractures and deformities complicate ligament balancing, increasing risk of residual instability or stiffness. |
| Pulmonary Complications | Restrictive lung disease in AS increases perioperative respiratory risk; careful positioning and pulmonary optimization required. |
| Medication-Related Risks | Steroid-induced wound healing delay, NSAID-related bleeding risk, and immunosuppressant-related infection risk. |
Classic Clinical Notes
Pre-op planning
Approach to Inflammatory Arthritis – Preoperative Planning
- Includes rheumatoid arthritis, SLE, ankylosing spondylitis, psoriatic arthritis.
Pre-Operative Considerations
- Beware the increased risk of infection: psoriatic arthritis patients have a higher risk of deep infection – probably from skin lesions colonized with bacteria. Rheumatoids also have higher risk of infection.
- Beware skin ulceration: rheumatoids may have skin vasculitis that makes them prone to ulceration.
- Beware atlanto-axial and atlanto-occipital instability in rheumatoids – may be asymptomatic in over 50%. May also see instability in ankylosing spondylitis. Does not require fusion – requires careful intubation (awake, fluoroscopic).
- Beware limited chest wall expansion in ankylosing spondylitis or other seronegative arthritides – need preop pulmonary function studies and careful positioning so as to not impede their diaphragmatic breathing.
- Beware pulmonary disease in rheumatoids – restrictive +/- nodules – need preop pulmonary function.
- Beware ileitis and colitis when associated with arthritis – increased risk of infection.
- Beware anemia of chronic disease – almost universal.
- Beware immune suppression, with and without steroid use.
- Beware variations in bone quality – rheumatoids have increased bone turnover in periarticular bone – may attribute to high loosening rates; be wary of using cementless fixation in this population.
- Beware soft tissue contractures and joint DEFORMITY in inflammatory arthritis – be prepared for difficult ligament balancing and soft tissue releases around the knee and hip.
- Beware the medications that they may be on – NSAIDs, steroids, methotrexate – all should be noted, and arguably stopped in lieu of their surgery.
Last Updated on January 24, 2026 by orthonet
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