Zimmer Air Dermatome
The Zimmer Air Dermatome (Zimmer Biomet) is a pneumatic oscillating-blade device for split-thickness skin graft (STSG) harvest, powered by regulated medical-grade compressed air or nitrogen. Zimmer also markets other dermatome models, but their controls and instructions are not interchangeable. In a US and Canada burn-unit director survey of dermatome-induced lacerations, 71.6% of reported events involved a Zimmer-branded dermatome and 73.0% involved an air-powered dermatome; neither percentage measures device use or market share.[1][5]
Zimmer Biomet's 2025–26 field safety action ZFA-2025-00141 concerns specified Zimmer Air Dermatome and Dermatome AN serial numbers with a potentially misaligned thickness-control bar and cuts deeper than intended. Check the facility's device serial number against the manufacturer's affected-product list and follow its phase-specific notice and recall-team or representative instructions. The phase-2 hospital instructions call for immediately locating and quarantining affected inventory; the surgeon section separately describes transitional use until a device-specific removal request. This is not a recall of every Zimmer dermatome.[6]
Design and Components
- Oscillating disposable blade that shears a uniform layer of skin
- Width plates. 1", 2", 3", 4" in listed kits, with an optional 1.5" plate[5]
- Thickness adjustment lever. Nominal range 0–0.030" in 0.002" increments for the Air model[5][7]; harvested thickness varies around the dial setting[4]
- Trigger / handswitch activation when compressed gas is connected
- Hose to medical compressed-gas source (air or nitrogen)
Typical Thickness Settings
| Setting | Graft type | Common use |
|---|---|---|
| 0.008–0.012" | Thin split-thickness | Large-TBSA burns |
| 0.012–0.018" | Intermediate split-thickness | An option for genital / perineal coverage, selected for the recipient and donor sites |
| 0.018–0.025" | Thick split-thickness | Selected sites; deeper donor wound |
Published settings vary by population and purpose: McBride's pediatric cohort used 0.007"[4], while 78.4% of lacerations in Egro's injury-event survey involved settings of 0.010–0.015".[1] Neither source establishes a generally preferred thickness range.[1][4]
Accuracy and Calibration
The actual graft thickness frequently deviates from the dial setting, a caveat that applies to every Zimmer operator:
- McBride 2017: 140 pediatric grafts from 91 children at a 0.007" dial setting: median measured graft thickness 6.94/1000", IQR 5.05–9.28/1000"; the study found no data suggesting preoperative predictors of deviation.[4]
- Individual dermatomes calibrate differently. Across six tested devices, the mean dial setting at which a #15 scalpel blade could pass ranged from 5.0 to 7.8/1000".[3]
- Operator pressure, donor-skin turgor, blade sharpness all contribute.
Scalpel dermatome test (Dargan 2025): passage of a #15 scalpel blade was studied as a check of blade-aperture behavior on six devices. Reliability was ICC 0.89 within an observer but only 0.52 between observers.[3] Actual harvested graft thickness was not tested.[3] The Zimmer Air IFU separately instructs operators not to insert any instrument between the blade and control lever because this may nick the blade and compromise calibration.[7]
Follow the specific manufacturer's pre-use and servicing instructions and assess the graft.[5]
Reconstructive / Urogyn Uses
- Scrotal reconstruction after Fournier's gangrene. An established GU indication
- Post-debridement coverage. Hidradenitis suppurativa, necrotizing soft-tissue infection, buried-penis reconstruction
- Penile shaft resurfacing. Post-free-silicone-explant, chronic penile dermatitis, after extensive lichen-sclerosus excision
- Perineal reconstruction after radical debridement
- Phalloplasty donor-site coverage. Radial forearm, ALT, MLD harvest sites
- STSG-lined neovagina. An alternative to penile-inversion or intestinal vaginoplasty in GAS
- Coverage over tissue expanders in staged penile reconstruction
Dermatome-Induced Lacerations — Rare but Recognized
In a survey with 56 burn-unit director responses (42% response rate), Egro 2020 reported 133 lacerations over five years and estimated approximately 1.3 per 1,000 cases.[1] Exposure denominators were not supplied.[1]
| Reported event characteristic | Share of lacerations |
|---|---|
| Air dermatome | 73.0% |
| 4" guard | 63.5% |
| Thickness 0.010–0.015" | 78.4% |
| Angulation 30–45° | 47.3% |
| Excessive pressure (most-cited cause) | 25.0% |
| Patient factors | 18.4% |
Among reported lacerations, 70.3% extended to subcutaneous tissue and 86.5% had no neurovascular injury. The dermatome was most often set up by a scrub tech or nurse (48.6%); harvest was performed by residents (39.2%) or attendings (35.1%).[1]
Excessive pressure was the most frequently attributed cause in this survey.[1]
Technique Pearls
- Donor-site tumescent infiltration with saline ± dilute epinephrine creates a firm flat surface and reduces bleeding (common operative teaching).
- Donor-site lubrication. The Zimmer Air IFU says skin lubrication is not necessary, though sterile mineral oil may ease dermatome travel.[7] A 2025 review found no consensus on the optimal lubricant and raised a possible oil-based lubricant interaction with Meek adhesive; it found no direct compatibility data.[8]
- Angulation. 30–45° between the dermatome and the skin surface, consistent throughout the pass.
- Steady, even downward pressure. Excessive pressure was the most commonly attributed cause among reported lacerations in Egro 2020[1]; too little pressure can cause skip areas.
- Controlled forward speed. Too fast skips, too slow yields uneven thickness.
- Assistant counter-traction ahead of and behind the dermatome maintains a flat taut surface.
- Pre-use blade and device checks. Use a new sterile Zimmer Dermatome Blade (REF 00-8800-000-10), confirm blade seating and the dial setting, and verify serial-specific recall and servicing status.[5][6][7] Inspect the handpiece and hose before each use, and do not use a damaged hose. The Zimmer Air IFU calls for dermatome inspection and preventive maintenance every 12 months and hose inspection and preventive maintenance every 6 months; it strongly recommends annual factory calibration checks.[7]
- Throttle and gas checks. Set the throttle to SAFE before blade or hose changes and when idle. Use the specified medical gas and compatible hose; with the supplied hose, set the regulator to 100 PSI while the dermatome runs, following the IFU for extension-hose adjustments.[7]
- Choose a width plate appropriate to the defect
Zimmer Electric vs Air
Zimmer's electric dermatome is a separate model with a different power supply; check its own instructions. Powered dermatomes have a longer historical lineage.[2] Choice of device depends on equipment, service status and operator training.[1][5]
Trade-offs vs Adjacent Dermatomes
| Device | Power source | Trade-off |
|---|---|---|
| Zimmer Air | Regulated medical-grade nitrogen / air | Requires compatible gas supply and hose; check serial-specific field action |
| Zimmer Electric | Wall outlet | Same blade mechanism; no compressed-gas dependency |
| Zimmer Dermatome AN | Zimmer Dermatome Hose (same part as the Air model) | Cutting range 0.004–0.024" (0.10–0.60 mm), narrower than the Air; sealed, autowashable handpiece; also covered by the serial-specific field action[5][6] |
| Padgett | Model-specific electrical supply | No compressed-gas requirement; flap de-epithelialization has been described |
| Humby | Manual | Cheap, portable; depends entirely on surgeon skill for uniformity |
| Goulian / Weck | Manual | Small handheld; narrow grafts with integrated depth guard |
See also: Dermatome — Overview, Padgett Dermatome, Humby Dermatome, Goulian Dermatome, Skin Mesher, STSG, Fournier's Gangrene.
References
1. Egro FM, Saliu OT, Zhu X, Corcos AC, Ziembicki JA. "Dermatome-induced lacerations: an unspoken problem in burn surgery." J Surg Res. 2020;245:45–50. doi:10.1016/j.jss.2019.07.022
2. Singh M, Nuutila K, Collins KC, Huang A. "Evolution of skin grafting for treatment of burns: Reverdin pinch grafting to Tanner mesh grafting and beyond." Burns. 2017;43(6):1149–1154. doi:10.1016/j.burns.2017.01.015
3. Dargan DP, Gottlieb LJ, Vrouwe SQ. "Assessment of the scalpel blade as an objective tool for measuring dermatome cut thickness." J Burn Care Res. 2025;46(4):741-745. doi:10.1093/jbcr/iraf067
4. McBride CA, Kempf M, Kimble RM, Stockton K. "Variability in split-thickness skin graft depth when using an air-powered dermatome: a paediatric cohort study." Burns. 2017;43(7):1552–1560. doi:10.1016/j.burns.2017.02.010
5. Zimmer Biomet. Skin Grafting Family: The Power of Precision. 2022. Product specifications and service guidance; consult current model instructions for use.
6. Zimmer Surgical, Inc. Field safety corrective action ZFA-2025-00141, phase 2 affected-product list and removal notice. 23 Jan 2026.
7. Zimmer Orthopaedic Surgical Products. Zimmer Air Dermatome: Instruction Manual. Undated; pp. 1–3. PDF
8. Wright W, Ingram M, Frew Q. "A literature review of the lubricants used in dermatome-assisted split-thickness skin graft harvest." J Clin Med. 2025;14(12):4336. doi:10.3390/jcm14124336