Bone Osteotome and Chisel Set — Orthopedic Surgery Instruments Guide

Bone chisels and osteotomes look similar but serve different functions — a distinction that matters more than most procurement guides acknowledge. Getting the right set for the procedures your surgical team performs determines whether the instruments serve the surgeons well or sit unused in the back of the instrument tray.

Osteotome vs Bone Chisel — The Core Difference

Both instruments are struck with a mallet to cut or split bone, but their blade geometry differs:

• Bone chisel — beveled on one side only, like a woodworking chisel; the flat back face guides the cut along the bone surface. Used for cutting along a defined bone plane, removing cortical surfaces, and creating flat bone cuts (osteotomies).
• Osteotome — beveled symmetrically on both sides, producing a double-bevel (lenticular) cutting edge. This symmetrical bevel causes the instrument to split bone along its natural grain rather than cutting to one side. Used for splitting cancellous bone, separating bone segments, and preparing fusion sites where the goal is bone separation rather than surface removal.

Standard Bone Chisel Set — Sizes and Uses

Bone chisels are manufactured in blade widths from 4 mm to 25 mm. A standard general surgical set covers:

• 4 mm chisel — fine cortical work, cortical bone graft harvest from small donor sites, nasal dorsum rasping in rhinoplasty
• 6 mm chisel — small cortical osteotomies, hand surgery, pediatric bone work
• 9 mm chisel — standard lumbar and cervical bone graft harvest, facet joint preparation
• 13 mm chisel — general orthopedic cortical removal, tibial or femoral cortex preparation
• 19 mm chisel — broad cortical surfaces, scapular spine, hip joint approach
• 25 mm chisel — maximum width; used for large cortical bone graft harvest and broad joint preparation

Standard Osteotome Set — Sizes and Uses

• 4 mm osteotome — sinus lift procedures, fine cancellous bone separation in hand and foot surgery
• 6 mm osteotome — distal radius osteotomies, medial malleolar approach
• 10 mm osteotome (most commonly ordered) — spinal fusion site preparation, iliac crest graft harvest, tibial plateau leveling
• 13 mm osteotome — standard orthopedic cancellous bone work
• 19 mm osteotome — broad cancellous bone splitting for grafting procedures
• 25 mm osteotome — maximum size; hip arthroplasty and pelvis surgery

Handle Design Options

Bone chisels and osteotomes are available in two handle patterns:

• Octagonal handle (standard) — prevents the instrument from rolling on the tray; the flat faces provide grip for mallet striking
• Round knurled handle — preferred in ENT and plastic surgery where the instrument is sometimes rotated between strikes rather than struck in a fixed orientation

Blade Steel and Hardness

Bone chisel and osteotome blades take direct mallet impact with each use. Blades too hard (above Rockwell C 60) become brittle and can chip; blades too soft (below Rockwell C 50) deform at the cutting edge after a few uses. Fizza Surgical chisels and osteotomes are manufactured with blades heat-treated to Rockwell C 54 to 58 — the range that balances sharpness retention with impact resistance. Handles are 316L stainless steel compatible with steam autoclave sterilization.

Matching Mallets

Bone chisels should be used with a mallet, not a hammer. Surgical mallets are typically available in two configurations: solid stainless steel mallet (180 g and 230 g) and the double-ended mallet (light and heavy face). We supply mallets configured for the chisel handle diameter — important because a mallet head that is too narrow concentrates impact stress at the handle rim, which can damage the handle over time.

Ordering and Certification

Bone chisel and osteotome sets are available in specialty-specific configurations (spine set, ENT set, orthopedic set) or as full range sets. All instruments are manufactured under ISO 13485:2016 with CE marking. Contact Fizza Surgical for complete set pricing or to build a custom tray to your instrument card.