Comparison of Outcomes Between Anterior, Lateral, and Posterior Approaches in Hip Replacement

Pain and Early Functional Outcomes

The direct anterior approach is associated with lower pain scores on the first postoperative day compared to the posterolateral approach, though the difference is less than 10mm on the Visual Analog Scale (VAS) 1, 2
Meta-analysis confirms that the direct anterior approach results in less postoperative pain than a posterolateral approach, but is associated with longer surgical duration 2

The lateral approach is associated with lower postoperative pain but higher surgical complication rates compared to anterior and posterior approaches 2

The minimally invasive approach shows a clinically insignificant benefit on pain scores but carries a five-fold higher risk of iatrogenic nerve damage compared to conventional approaches 3
For patients undergoing hip replacement for fractures, the Association of Anaesthetists of Great Britain and Ireland emphasizes that "surgery is the best analgesic for hip fractures" regardless of approach 4, 5

The American Academy of Orthopaedic Surgeons states that surgical approach (anterior, lateral, or posterior) does not significantly affect outcomes in hip fracture arthroplasty 5
The direct anterior approach offers slightly better early postoperative pain control and functional outcomes compared to lateral and posterior approaches, but these differences diminish over time, with all approaches showing similar long-term outcomes for morbidity and mortality 1, 2, 3

The American Academy of Orthopaedic Surgeons states that surgical approach does not significantly affect long-term outcomes 6, 7
Regardless of surgical approach chosen, the analgesic regimen should include: paracetamol plus COX-2 inhibitors or NSAIDs, intravenous dexamethasone, and fascia iliaca block or local infiltration analgesia, as recommended by the Anaesthesia journal 6, 7
The choice of surgical approach should be based on criteria other than pain, as modern analgesic techniques can adequately control pain regardless of approach, according to the Anaesthesia journal 8

Surgical approach has minor impact on postoperative pain compared to the analgesic regimen employed, as noted in the Anaesthesia journal 6