Metzenbaum Scissors
Long-handled, short-bladed delicate surgical scissors — the workhorse fine-dissection scissor of every open reconstructive-urology and urogynecology case. Paired with the Mayo as the universal "common core" of operating-room scissors across institutions and continents.[1]
Design
- Blade-to-handle ratio: short blades on long handles — the defining feature that separates the Metzenbaum from the Mayo (where blades and handles are roughly equal). The high handle-to-blade ratio gives reach into deep operative fields with precision preserved at the tips.[1]
- Blades: thin, delicate, considerably lighter than Mayo blades; designed for fine dissection of delicate tissues.
- Tips: usually slightly curved (the curved configuration is the daily workhorse); straight Metzenbaums exist for specific straight-cut applications.
- Length: 14 cm (5.5 in) to 30 cm (12 in) or longer; 18 cm (7 in) is the typical pelvic workhorse, with Long Metzenbaum at 23–25 cm for deep posterior urethroplasty and deep pelvic re-do work, and Nelson-Metzenbaum at 28–30 cm for the deepest fields.
- Material: surgical-grade stainless steel.
Reconstructive-Urology and Urogyn Uses
The Metzenbaum is the default scissor for any dissection plane that is not fascia, suture, or heavy connective tissue — which is the majority of the open pelvic case:
Pelvic plane development
- Retropubic / space of Retzius dissection during open BNR, AUS placement, open sling work.
- Vesico-vaginal plane during VVF repair, anterior colporrhaphy, transvaginal sling.
- Recto-vaginal plane during sacrocolpopexy, RVF and rectoneovaginal-fistula repair, posterior colporrhaphy.
- Peri-urethral and peri-prostatic dissection during posterior urethroplasty and transperineal RUF repair.
- Peri-ureteral mobilization during open and robotic ureteral reimplantation, ureteroureterostomy, ileal-ureter interposition, Boari-flap reconstruction, and ureterolysis for retroperitoneal fibrosis.
- Peri-vasal and spermatic-cord dissection during open vasovasostomy, varicocelectomy, hydrocelectomy, and inguinal orchidopexy.
- Mesenteric-window development during open urinary diversion and augmentation cystoplasty when finer than the Mayo is needed.
- Pre-peritoneal-space development during open prosthesis placement and pre-peritoneal reservoir placement.
Sharp dissection of fine tissue
- Peritoneum opening and entry — tenting peritoneum with Singley forceps and incising between with Metzenbaum.
- Areolar / fat planes through Scarpa's, into the deep pelvic spaces, around the ureter, around the bladder.
- Thin fascial layers that the Mayo would over-cut.
- Bowel serosa scoring as part of antimesenteric opening during diversion / augmentation.
- Adhesion takedown along developmental planes — fine and deliberate, not coarse.
Blunt dissection ("spread to dissect")
- The Metzenbaum is the canonical fine blunt-dissection instrument: insert tips closed along the plane, open gently against the tissue, allow the plane to develop. The same technique used with a Kelly at the deeper / firmer planes is used with a Metzenbaum at the finer / more delicate planes.
Adjunct to flap and graft work
- Flap-pedicle skeletonization — clearing adventitia from gracilis / omental / SCIP / IGAP / PAP / DFAP pedicles during reconstructive flap mobilization.
- Buccal-mucosa graft (BMG) harvest — fine submucosal-plane development during graft elevation.
- Penile dorsal NVB dissection during Peyronie's plication, penile-disassembly procedures, and partial / radical penectomy where neurovascular-bundle preservation is the operative goal.
What the Metzenbaum is not for
- Cutting suture, drains, dressings, or mesh — use the straight Mayo or dedicated suture scissors. Using the Metzenbaum on non-tissue dulls the fine blades faster than any other single misuse.
- Heavy fascia, dense scar, or fascial-sling harvest — use the curved Mayo. The Metzenbaum will deflect or splay on truly tough tissue.
- Hypospadias and microsurgical layers where even Metzenbaum is too coarse — drop down to iris scissors or microsurgical scissors.
Mayo vs Metzenbaum
| Feature | Metzenbaum | Mayo |
|---|---|---|
| Blade | Thin, delicate | Thick, heavy |
| Blade-to-handle ratio | Short blades, long handles | Blades ≈ handles |
| Primary tissue | Fat, areolar tissue, peritoneum, thin fascia | Rectus fascia, dense connective tissue, mesh, drains |
| Dissection style | Fine sharp / blunt dissection | Coarser cut-and-divide |
| Non-tissue cutting | Never | Routinely (straight Mayo) |
Pepper 2026's Anglo-American comparative review confirms Mayo + Metzenbaum as the irreducible "common core" of operating-room scissors across institutions and specialties.[1]
Length Variants
| Variant | Length | Best fit |
|---|---|---|
| Standard Metzenbaum | 14–18 cm | Skin-to-mid-pelvic dissection |
| Long Metzenbaum | 23–25 cm | Deep pelvic and posterior urethroplasty |
| Nelson-Metzenbaum | 28–30 cm | The deepest fields (re-do pelvic, posterior re-anastomosis) |
Technique
- Tripod or thumb-ring-finger grip with the index finger along the shank for stability.
- Insert closed, open gently: the canonical fine-blunt-dissection maneuver. Resist the urge to push closed Metzenbaums through resistance — switch to sharp dissection when the plane is not opening.
- Sharp cut: deliberate, single decisive close on the tissue with the tip in the field; do not "nibble" with multiple small cuts.
- Keep dedicated: the Metzenbaums on the field stay on tissue; suture and material cutting belong on the Mayo.
Care and Maintenance
The Metzenbaum's fine blades are the most easily damaged scissor edge on the standard tray. Routine practice:
- Inspect the edge before each case; a dull Metzenbaum crushes rather than cuts and ruins the operative tactile feel.
- Replace or sharpen on a wear-driven cycle.
- Strict role segregation from non-tissue cutting; institutional sterile-processing programs typically enforce this with color-coding or back-table arrangement.
Historical Context
Named for Myron Firth Metzenbaum (1876–1944), a Cleveland, Ohio surgeon and one of the early American figures in plastic and reconstructive surgery. He designed the scissors to facilitate the delicate tissue dissection that plastic and reconstructive operations required, and the instrument became one of the most enduring eponymous contributions to general operative surgery.[2] The Metzenbaum line shares the broader genealogy of eponymous surgical scissors that defines the standard operative tray.
See also: Mayo Scissors, Singley Forceps, Electrosurgical Pencil.
References
1. Pepper T, McMillan D, Jenzer A, et al. "Transatlantic tools of the trade: Anglo-American instrumentation in oral and maxillofacial surgery." Br J Oral Maxillofac Surg. 2026;64(3):223–33. doi:10.1016/j.bjoms.2025.12.006
2. El-Sedfy A, Chamberlain RS. "Surgeons and their tools: a history of surgical instruments and their innovators — part I: place the scissors on the Mayo stand." Am Surg. 2014;80(11):1089–92.