Metzenbaum Scissors
Metzenbaum-pattern scissors have relatively long handles and fine blades for soft-tissue cutting and dissection. They are a common option in open reconstruction, with several blade, tip and length variants. Pepper's 2026 descriptive UK/US oral-maxillofacial review found Metzenbaum and Mayo in its small shared core; that is not proof that every pelvic tray requires both.[1][3]
Design
- Blade-to-handle proportions: relatively short blades on longer shanks compared with common Mayo models; this can provide reach, while actual control depends on model and technique.[3][5]
- Blades: thin, delicate, considerably lighter than Mayo blades; designed for fine dissection of delicate tissues.
- Tips and configuration: curved and straight versions exist, with blunt, pointed and other manufacturer-specific profiles. Do not infer tip safety from the pattern name alone.[3]
- Length: catalog examples include 14.5, 18 and 23 cm; choose reach for the actual exposure rather than assuming 18 cm is a universal pelvic default. The cited catalog does not establish a universal 28–30-cm “Nelson-Metzenbaum” size.[3]
- Material: surgical-grade stainless steel.
Reconstructive-Urology and Urogyn Uses
The following are possible open-surgery applications for a suitable delicate-tissue model, not a device requirement for every procedure or plane:
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 ureteral reimplantation, ureteroureterostomy, ileal-ureter interposition, Boari-flap reconstruction, and ureterolysis for retroperitoneal fibrosis. Robotic work uses separately specified robotic scissors, not this hand-held model.
- 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.
- Selected bowel-wall or serosal cutting during diversion / augmentation only when the planned operative technique calls for it; protect adjacent layers and use the instrument specified for that step.
- Adhesion takedown along developmental planes, fine and deliberate, not coarse.
Blunt dissection ("spread to dissect")
- For fine blunt dissection, insert the closed tips along an identified loose plane and open in a controlled manner; do not force resistance or close on unseen tissue. This is an educational maneuver, not proof that blunt dissection is less traumatic than sharp dissection.[5]
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
- Material cutting on a tissue-dedicated reusable pair. Many teaching programs reserve fine tissue scissors and use a utility or designated Mayo for sutures and materials to protect the edge. This is not a universal Metzenbaum prohibition: DTR's 2025 single-use Metzenbaum IFU explicitly includes cutting dressings and sutures for its named models.[4][5]
- Heavy fascia, dense scar, or fascial-sling harvest. Use the curved Mayo. The Metzenbaum will deflect or splay on truly tough tissue.
- Very fine hypospadias or microsurgical layers when the selected Metzenbaum tip is too coarse, consider appropriately matched Iris scissors or microsurgical scissors.
Mayo vs Metzenbaum
| Feature | Metzenbaum | Mayo |
|---|---|---|
| Blade | Thin, delicate | Thick, heavy |
| Blade-to-handle proportions | Relatively short blades, longer shanks | Relatively substantial blades |
| 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 | Protect a tissue-dedicated edge; check model IFU, since some permit sutures/dressings | A designated Mayo may cut sutures/materials; straight models can also cut tissue |
Pepper 2026 reports both patterns in the shared core of the oral-maxillofacial practices compared, not every institution or specialty.[1]
Length Variants
| Variant | Length | Best fit |
|---|---|---|
| Short/standard catalog examples | 14.5–18 cm | More accessible soft-tissue dissection; match the tip to the field |
| Long catalog example | 23 cm | Deeper access when the model's working end is suitable |
| Other long variants | Verify the exact model | Do not infer a universal Nelson-Metzenbaum length or preferred operation |
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: control the visible tip and tissue. When extending a delicate incision, an educational surgical-skills source describes sequential partial closures rather than a universal one-cut rule.[5]
- Keep tissue-dedicated reusable models on tissue when following that local policy; consult the selected IFU before claiming all Metzenbaums exclude suture or dressing cutting.[4][5]
Care and Maintenance
For reusable fine-blade models, routine maintenance includes:
- 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.
- Task separation may preserve tissue-cutting performance; follow local processing and the model IFU. DTR's named single-use models must not be re-sterilized or reused, so sharpening cycles do not apply to them.[4]
Historical Context
Named for Myron Firth Metzenbaum (1876–1944), a Cleveland otolaryngologist and reconstructive surgeon. A full historical article cites an early 1912 description of his scissors for tonsil and perineal operations; it does not say they were invented specifically for later urologic reconstruction.[2][6]
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.
3. Teleflex/Pilling. Current scissor catalog. Metzenbaum model examples with 14.5-, 18- and 23-cm lengths and differing tips; catalog specification, not procedure-outcome evidence.
4. DTR Medical. Metzenbaum Scissors IFU, DTR.M.034 Rev 1.0, July 2025. Named single-use models permit tissue and dressing/suture cutting; do not re-sterilize or reuse. This is not the IFU for reusable Metzenbaums.
5. University of Saskatchewan veterinary clinical-skills laboratory. Scissor teaching page. Describes tissue/material allocation and controlled cutting and blunt-dissection technique; educational, not a human clinical comparison.
6. Noonan MA, Isaacson G. Myron Metzenbaum and the Perfect Tonsillectomy Scissors. Ear Nose Throat J. 2026;105(8):464–465. Full two-page historical article, including its 1912 source citation; archival original not independently read.