Fukuda Shoulder Retractor: Glenoid Exposure in Shoulder Arthroplasty

A shoulder retractor provides exposure during shoulder arthroplasty and complex glenohumeral reconstruction in a deep, anatomically constrained space. These procedures require precise exposure. During total shoulder arthroplasty (TSA) or reverse total shoulder arthroplasty (rTSA), a primary technical challenge is retracting the proximal humerus posteriorly for direct, perpendicular visualization of the glenoid articular surface. Standard flat retractors can slip off the humeral head or cause focal cartilage or bone damage.

The Fukuda shoulder retractor maintains posterior humeral displacement to optimize glenoid exposure during open shoulder surgery. This orthopedic instrument was developed specifically for that purpose.

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What Is a Fukuda Shoulder Retractor?

The design addresses the difficult exposure geometry of the glenohumeral joint and is named after Japanese orthopedic surgeon Dr. H. Fukuda. Following an anterior deltopectoral approach and capsular release, the proximal humerus must move posteriorly and laterally away from the glenoid neck. This allows the glenoid face to be reamed, drilled, and fitted with an implant.

The Fukuda retractor uses a distinctive ring-shaped (fenestrated) curved working end to achieve this displacement. The circular opening cradles the humeral head or metaphysis. It stabilizes the bone against lateral or vertical slippage while an assistant applies steady posterior traction.

How Does the Blade and Shank Design Support Retraction?

The Fukuda shoulder retractor has structural features designed to address the rotational forces of the shoulder girdle:

• Fenestrated ring blade: An open, curved distal ring cups the convex proximal humerus. It distributes counter-traction evenly across the bone surface rather than concentrating force at one contact point.
• Offset shank: An ergonomic neck offset keeps the assistant’s hand outside the narrow deltopectoral working channel, preserving direct sightlines and lighting.
• Radiused, polished margins: Smoothly rounded inner and outer blade perimeters minimize abrasion to intact articular cartilage, periosteum, and adjacent rotator cuff tendons.
• Heavy-duty construction: Forged from rigid Premium Grade AISI 304/316 Stainless Steel (Non-Magnetic) to prevent shank flexing when displacing heavy pectoral and deltoid musculature.

What Blade Sizes Are Available?

Fukuda retractors are generally manufactured in two primary blade sizes to accommodate different skeletal proportions:

How Is the Fukuda Retractor Used for Glenoid Exposure?

The Fukuda retractor is an essential component of shoulder reconstruction sets, supporting exposure in the following procedures:

• Glenoid preparation in TSA: After humeral head resection, the Fukuda blade sits behind the posterior glenoid rim and proximal humerus. Posterior traction moves the humeral shaft out of the field, giving reamers and drill guides perpendicular access to the glenoid face.
• Reverse total shoulder arthroplasty (rTSA): Provides exposure for glenosphere baseplate positioning, central screw drilling, and peripheral locking screw insertion.
• Open anterior instability repair: Supports joint visualization during open Bankart or Latarjet procedures by maintaining humerus displacement during glenoid neck preparation.

How Does the Fukuda Retractor Compare With Other Designs?

How Should Cleaning, Inspection, and Reprocessing Be Done?

• Point-of-use cleaning: Remove all biological fluids, bone dust, and saline residues immediately after use. Pay particular attention to the fenestrated ring’s inner perimeter.
• Decontamination: Submerge in enzymatic detergent, scrub ring edges with soft nylon brushes, and use an ultrasonic bath to remove microscopic particulates.
• Inspection: Visually check the ring for structural distortion, micro-pitting, or burrs that could abrade soft tissues. Confirm that the shaft remains straight and rigid.
• Sterilization: Autoclave using validated moist heat steam sterilization parameters, following the manufacturer’s validated IFU and hospital infection prevention protocols.

What Should Procurement and OEM Buyers Verify?

Hospitals and distributors sourcing Fukuda retractors should verify alloy purity, surface finish, and available OEM customization:

• Alloy purity: Premium Grade AISI 304/316 Stainless Steel (Non-Magnetic) with high fatigue resistance prevents shank bending during heavy posterior traction.
• Surface finish: A satin or matte finish eliminates harsh reflections from surgical headlights and operating theater lighting.
• OEM customization: Retractor Maker works with international orthopedic distributors to supply standard and custom-sized Fukuda retractors, specialized handle contours, and private-label laser marking.