Hip Replacement Surgery: Elective vs. Urgent Indications and Decision Framework

Elective Hip Arthroplasty (Standard Pathway)

Most total hip replacements (THR) are elective—scheduled for end-stage osteoarthritis with:

• Persistent pain despite NSAIDs, PT, injections, activity modification.
• Functional limitation (walking, stairs, shoeing, sleep disturbance).
• Radiographic joint space loss, osteophytes, subchondral sclerosis.
• Patient motivation and medical optimization completed.

Timeline: weeks to months for scheduling; preoperative optimization (anemia, glycemic control, smoking cessation, dental clearance).

Urgent/Semi-Urgent Indications

Decision Framework

1. Diagnosis confirmation: Imaging + clinical correlation.
2. Severity assessment: Pain scores, validated tools (HOOS, Oxford Hip Score), functional deficit.
3. Nonoperative trial: ≥3 months conservative management (unless urgent indication).
4. Medical optimization: Anemia (Hb >12), HbA1c <7.5, BMI <40 (ideally <35), smoking cessation, dental clearance.
5. Shared decision-making: Implant choice, approach (anterior, posterior, lateral), bearing surface, expectations.
6. Timing: Elective = patient/surgeon schedule; Urgent = clinical imperative.

Key Distinction

Elective = condition allows optimization and scheduling; Urgent = delay increases morbidity/mortality. Both are "necessary" when indicated. The classification affects preoperative workup timeline, not the medical justification.

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Scenario	Urgency	Key Considerations
Displaced femoral neck fracture	Emergent/Urgent (24–48h)	THR or hemiarthroplasty; medical optimization concurrent
Pathologic fracture (metastasis)	Urgent	Oncologic stability, radiation planning
Septic arthritis (native hip)	Emergent	Irrigation/debridement first; delayed THR after eradication
Periprosthetic joint infection (acute)	Urgent	DAIR (debridement, antibiotics, implant retention) if <4 weeks
Avascular necrosis (ARCO stage III/IV) with collapse	Semi-urgent	Rapid progression risk; preserve femoral head if possible
Severe inflammatory arthritis (RA, AS) with functional loss	Semi-urgent	Disease control optimization; bone quality concerns