IM Nailing vs. Endoprosthetic Reconstruction for Bone Metastases: Comparative Outcomes

Surgical management of femoral metastases typically involves a choice between intramedullary nailing (IMN) and endoprosthetic (EP) reconstruction. Recent meta-analyses indicate that both methods are effective for treating these bone metastases, although they offer distinct benefits and carry different risks.

Femoral metastases affect approximately 20,000 patients annually. The selection of a surgical strategy is critical for maintaining patient mobility and managing pain associated with the disease.

Comparative Infection and Failure Rates

A meta-analysis published June 24, 2025, in the European Journal of Orthopaedic Surgery & Traumatology, analyzed data from 10 studies involving 1,047 patients to compare the outcomes of IMN and EP.

The research found that short-term superficial infection rates were 2.5% for IMN and 3.5% for EP. Deep infections were notably lower in the IMN group at 0.4% compared to 3.5% for the EP group.

Implant failure rates were similar between the two methods, recorded at 5.3% for IMN and 5.0% for EP. Initial reoperation rates were 2.5% for IMN and 4.8% for EP.

The data indicated a shift in outcomes after six months. During this period, reoperations occurred in 6.7% of IMN cases compared to 3.3% of EP cases. Deep infections after six months were 0% for IMN and 1.4% for EP.

Despite these specific differences, the meta-analysis concluded that there were no significant overall differences between the groups for these outcomes, stating that both IMN and EP are effective for femoral metastases.

Surgical Trauma and Pain Management

Beyond infection and failure rates, research has examined the physical impact of these procedures. A study published in the Chinese Journal of Cancer Research found that both endoprosthetic replacement and intramedullary nailing achieved the same effects in terms of pain control.

However, the study noted a difference in the level of physical impact, finding that the surgical trauma associated with the endoprosthetic replacement group was greater than that of the IMN group.

Long-Term Functional Outcomes

While short-term outcomes are comparable, some evidence suggests differences in long-term prognosis. A systematic review and meta-analysis published November 3, 2025, in EFORT Open Rev, indicated that prosthetic reconstruction may offer superior long-term functional outcomes and extended survival when compared with internal fixation.

Because both surgical options are effective but present unique risks and benefits, researchers emphasize that patient-specific factors should guide the treatment choice.

Medical professionals continue to seek more data to refine surgical selection criteria and further improve outcomes for patients with femoral metastases.