Clinical bottom line
Biodegradable magnesium-based implants represent a promising alternative to traditional non-degradable metal implants for fracture fixation in orthopedics. They offer potential advantages including gradual load transfer to healing bone, elimination of secondary implant removal surgery, and favorable biocompatibility. However, current evidence remains preliminary and largely derived from early-phase clinical studies and translational research. While magnesium alloys have shown encouraging biomechanical properties and biodegradation profiles, concerns about implant corrosion rate, hydrogen gas release, and long-term outcomes warrant cautious interpretation. These implants may be considered investigational adjuncts in select fracture types, particularly in sports orthopedics, but require further rigorous clinical validation before widespread adoption.
What the evidence shows
Recent advances in alloy design and surface engineering have improved the mechanical strength and corrosion resistance of magnesium-based implants, addressing earlier limitations of rapid degradation and gas formation (Raykov et al., 2026). These implants degrade gradually in vivo, allowing progressive load sharing with the healing bone, which may promote bone remodeling and reduce stress shielding compared to permanent metallic devices (Raykov et al., 2026).
Clinical case series and pilot studies in sports orthopedic surgery have demonstrated satisfactory fracture healing with magnesium screws and pins, reporting comparable union rates and functional outcomes to conventional titanium implants (Raykov et al., 2026). Moreover, the biodegradation process eliminates the need for implant removal surgery, potentially reducing patient morbidity and healthcare costs (Leung et al., 1994).
Comparative reviews analyzing femoral shaft fracture fixation suggest that biodegradable magnesium implants provide adequate fixation strength while gradually resorbing, but highlight variability in corrosion behavior depending on implant design and local biological environment (2024 reviews). These analyses emphasize the importance of optimized alloy composition and surface treatments to balance degradation rate with mechanical integrity during the critical healing period.
Caveats and uncertainty
Despite promising translational and early clinical data, the evidence base remains limited by small sample sizes, short follow-up durations, and heterogeneity in implant types and fracture patterns studied (Raykov et al., 2026). The long-term effects of magnesium degradation products on surrounding tissues and systemic metabolism are not fully elucidated.
Hydrogen gas release during corrosion can lead to gas pocket formation, which may interfere with bone healing or cause local discomfort, though this phenomenon appears transient and manageable with current implant designs (Raykov et al., 2026). The optimal patient selection criteria, fracture types, and surgical techniques for magnesium implant use remain to be established.
Furthermore, regulatory approvals and standardized manufacturing processes for these implants vary globally, limiting their availability and consistent clinical application. High-quality randomized controlled trials comparing magnesium-based implants to standard-of-care fixation devices are needed to confirm safety, efficacy, and cost-effectiveness.
How this may change practice
Magnesium-based biodegradable implants could transform fracture fixation by obviating implant removal surgeries and enhancing bone healing through favorable biomechanical and biological interactions. Orthopedic surgeons should remain informed about ongoing developments and emerging clinical evidence to identify suitable cases for investigational use, particularly in sports-related fractures where implant removal is common.
Incorporation of these implants into practice will require multidisciplinary collaboration with implant manufacturers, regulatory bodies, and clinical researchers to ensure optimized implant design, surgical protocols, and patient monitoring. Surgeons should counsel patients regarding the experimental nature of these devices, potential benefits, and risks.
As evidence matures, magnesium implants may become a standard option for select fractures, improving patient outcomes and healthcare resource utilization. Until then, their use should be confined to clinical trials or carefully monitored settings.