Heterotopic ossification after total hip replacement

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering

Background:

• Heterotopic ossification (HO) is a frequent complication following total hip arthroplasty (THA).
• HO can lead to significant functional deficits, including reduced hip range of motion and gait disturbances.
• The exact causes of HO remain incompletely understood, though prevailing theories exist.

Purpose of the Study:

• To comprehensively review the incidence, etiology, risk factors, and classification systems for HO after THA.
• To detail current prophylactic treatment strategies for HO.
• To discuss the management of established HO.

Main Methods:

• Literature review of existing studies on heterotopic ossification post-THA.
• Analysis of etiological theories and identified risk factors.
• Evaluation of prophylactic and therapeutic interventions.

Main Results:

• HO is common after THA, impacting hip function.
• Prophylactic measures like radiation and anti-inflammatory drugs show effectiveness.
• Treatment for existing HO is less certain, often requiring surgical excision post-ossification.

Conclusions:

• Understanding HO's incidence, etiology, and risk factors is crucial for THA patients.
• Prophylaxis is key, with radiation and NSAIDs being effective.
• As THA rates rise, developing safe, cost-effective prophylactic strategies is essential.