This retrospective cohort study asks whether placing a regenerative peripheral nerve interface (RPNI) at the time of primary amputation can prevent symptomatic neuromas and reduce phantom limb pain. An RPNI is a transected nerve implanted into an autologous free muscle graft, giving regenerating axons a physiologic target instead of forming a painful neuroma. 90 patients (45 RPNI, 45 controls) were compared for pain outcomes over approximately one year of follow-up.
Postamputation pain is one of the most treatment-resistant problems in reconstructive surgery and rehabilitation. Traditional nerve management at amputation — traction neurectomy, suture ligature, burial in muscle. Does not prevent neuroma formation; it simply tries to relocate the inevitable neuroma somewhere less symptomatic.
This paper establishes that addressing the nerve at the time of primary amputation, rather than treating a painful neuroma later, is the more effective strategy. When performing a major limb amputation, isolating the major peripheral nerves and creating RPNIs from autologous muscle grafts harvested from the amputated part should be considered part of the closure. Not an add-on.
The phantom limb pain data carries a mechanistic message worth internalizing: peripheral neuroma pain appears to drive central sensitization. Eliminating the peripheral pain generator at the source may prevent the central nervous system reorganization that makes phantom limb pain so refractory to treatment.
For orthopedic surgeons performing amputations. Particularly traumatic transtibial cases. Understanding this technique and its rationale is increasingly expected. Collaboration with plastic surgery for RPNI creation at the time of primary amputation is a practice directly supported by this data.
This retrospective cohort study asks whether placing a regenerative peripheral nerve interface (RPNI) at the time of primary amputation can prevent symptomatic neuromas and reduce phantom limb pain. An RPNI is a transected nerve implanted into an autologous free muscle graft, giving regenerating axons a physiologic target instead of forming a painful neuroma. 90 patients (45 RPNI, 45 controls) were compared for pain outcomes over approximately one year of follow-up.
Postamputation pain is one of the most treatment-resistant problems in reconstructive surgery and rehabilitation. Traditional nerve management at amputation — traction neurectomy, suture ligature, burial in muscle. Does not prevent neuroma formation; it simply tries to relocate the inevitable neuroma somewhere less symptomatic.
This paper establishes that addressing the nerve at the time of primary amputation, rather than treating a painful neuroma later, is the more effective strategy. When performing a major limb amputation, isolating the major peripheral nerves and creating RPNIs from autologous muscle grafts harvested from the amputated part should be considered part of the closure. Not an add-on.
The phantom limb pain data carries a mechanistic message worth internalizing: peripheral neuroma pain appears to drive central sensitization. Eliminating the peripheral pain generator at the source may prevent the central nervous system reorganization that makes phantom limb pain so refractory to treatment.
For orthopedic surgeons performing amputations. Particularly traumatic transtibial cases. Understanding this technique and its rationale is increasingly expected. Collaboration with plastic surgery for RPNI creation at the time of primary amputation is a practice directly supported by this data.