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Rongeur

A rongeur (from the French ronger, "to gnaw") is a bone-biting forceps — a heavy, hinged instrument with sharp cupped jaws that remove bone in small controlled bites. The standard bone-removal tool when precise debridement matters more than speed.

Design​

  • Hinged metal handle (like a heavy clamp)
  • Sharp cupped or curved jaws — each squeeze takes a discrete bone bite
  • Single- or double-action — double-action rongeurs multiply mechanical advantage for harder bone
  • Straight or angled jaw configurations

Common Variants​

  • Leksell rongeur — large, curved jaws; neurosurgical and spinal workhorse; commonly used for pubic bone debridement in urology
  • Stille rongeur — straight-jaw, heavy-duty
  • Kerrison rongeur — thin upward-biting rongeur with a thin footplate, fits into narrow corridors (spinal, rarely pubic)
  • Lempert rongeur — smaller, for finer bone work

Use in Reconstructive Urology​

  • Partial pubectomy for urethropubic fistula with osteomyelitis
  • Bone debridement during PFUI reconstruction — trimming bony fragments encroaching on the urethral field
  • Pubic symphysis debridement in UPF / pubovesical fistula management — removing infected bone back to bleeding healthy bone
  • Pelvic ring exposure during complex posterior urethroplasty (rare; typically deferred to orthopedics)

Technique Pearls​

  • Take small bites — each squeeze removes a discrete chunk; greedy bites fracture rather than cut
  • Debride to bleeding bone — the infected / avascular cortical bone must be removed back to vascular cancellous bone
  • Irrigate frequently — bone chips must be cleared to maintain visualization
  • Pair with a periosteal elevator to strip the periosteum before rongeuring

See also: Pituitary Rongeur, Periosteal Elevator, Osteotome and Mallet, Urethropubic Fistula, PFUI.