C-Arm for Orthopedic Surgery: How It Is Used and What to Specify

Where the C-arm is used in orthopaedic surgery

The C-arm helps in closed and open fracture reduction, in intramedullary nailing of the femur and tibia, in plating, in screw fixation of the pelvis and hip, in spine instrumentation and in arthroscopic or joint procedures where position must be confirmed. It is also used to check limb alignment and length, and in removal of implants or foreign bodies.

Each step relies on the same cycle: position the arm, take a short image, correct, and repeat. A system that gives clean images quickly and holds its position between shots shortens the case and lowers fluoroscopy time.

What image quality means in orthopaedics

Orthopaedic images combine dense metal with bone and soft tissue, and the surgeon needs to see cortex lines, screw threads and joint spaces. A flat-panel detector gives distortion-free geometry and a wide dynamic range, so metal edges are less likely to blow out the picture. Metal artefact suppression further helps when implants are close to the area of interest.

Long-bone surgery benefits from stitching software that merges several images into one long view to judge alignment and length. The PLX C22 includes metal artefact suppression and long-bone stitching software, while the Arcovis DRF-C offers a 21 × 21 or 30 × 30 cm flat-panel detector in a compact C-arm.

Specifications that matter

Detector size decides how much anatomy is shown at once; 30 × 30 cm helps in pelvis and hip, while 21 × 21 cm may be enough in extremity work. Generator power must be adequate for large patients and the hip, and heat capacity prevents forced waits. A deep throat or wide opening under the arm is helpful for the lateral view of the femur.

Laser positioning on both the tube and the detector speeds centring without extra exposures; the PLX C1520/1521 has this, together with a wireless link between C-arm and workstation and remote exposure, and the Arcovis DRF-C has a dual laser localiser. See C-arm specifications explained for parameters in detail.

• Detector: 21 × 21 or 30 × 30 cm class for most trauma work
• Generator power and heat capacity for hips and long cases
• Laser positioning to centre without exposure
• Position memory and smooth movements
• Easy cleaning and good draping options

Workflow in the orthopaedic theatre

Plan where the C-arm sits relative to the table and the surgeon. Many surgeons prefer the machine on the opposite side of the table so it can swing in and out without disturbing the field. Radiotranslucent tables make the images cleaner, and the monitor should be visible without turning the head.

Staff protection matters because surgeons often work close to the beam. Use pulsed fluoroscopy, keep hands out of the beam and wear protective garments. For dose habits read C-arm radiation safety, and for draping see C-arm drapes and covers.

Common problems in orthopaedic fluoroscopy

Three problems come up often. First, positioning errors: an oblique view of the hip or a rotated lateral of the knee can hide a screw that is too long. Training on standard views and using position memory prevents this. Second, excess radiation from repeated shots: use last-image hold and decide each image before pressing the pedal.

Third, workflow friction. If the monitor is hard to see, cables cross the floor or the arm cannot slide under a traction table, surgeons stop using it and operate from fewer images. Test the machine in your own table and traction setup during the demonstration, not only in a showroom.

Choosing for an orthopaedic department

List the procedures per week: simple hand and foot cases, general trauma, hip and pelvis, spine. A department with a mix usually needs a full-size flat-panel system; a day-surgery centre may start with a compact one. Think about whether 3D or navigation will be needed within the equipment life.

Ask suppliers about installation, training, spare parts and the response time of local service. Confirm device registration and facility licensing (MOHAP, DHA or DOH, depending on the emirate). For a recommendation, request a consultation from Beckfinity's specialists through the contact page.