TRIAL CUP

Indications & Use

• • Acetabular Cavity Sizing: To accurately verify the diameter, depth, and concentricity of the reamed acetabulum before committing to the final, definitive implant.
• • Implant Orientation Validation: To establish and confirm the optimal angles of inclination (abduction) and anteversion, ensuring proper biomechanics and minimizing dislocation risk.
• • Trial Reduction and ROM Testing: Used in conjunction with trial liners and femoral heads to articulate the joint, allowing the surgeon to test the full range of motion (ROM) and check for bone or soft tissue impingement.
• • Joint Stability Assessment: To evaluate soft tissue tension, capsular stability, and correct leg length discrepancy prior to unpacking sterile, costly definitive components.
• • Bone Bed Verification: Utilized via its fenestrations to ensure the cup is fully seated against the medial wall of the acetabulum without any remaining gaps.

Care & Sterilisation

Cleaning & Decontamination Rinse immediately after surgery to prevent blood, bone fragments, and marrow from drying, paying special attention to the assessment fenestrations (viewing holes) and the central handle connection mechanism. Disassemble the trial cup from any impactor handles or alignment guides prior to cleaning. Use a syringe or water jet to thoroughly flush out the internal threads or quick-connect locking mechanisms. Clean manually using only soft-bristled nylon brushes and pH-neutral enzymatic detergents. Strictly avoid abrasive pads, steel wool, or stiff wire brushes that could scratch the smooth hemispherical surface or obscure the size etchings. Sterilization The trial cup is fully autoclavable. Standard steam sterilization is recommended at 134°C (273°F) for 3 to 5 minutes using a pre-vacuum cycle. Ensure the cup is sterilized completely detached from the impactor handle to allow steam to penetrate the locking mechanisms and threaded interfaces fully. Inspection & Maintenance Routinely inspect the central threads or locking mechanism for wear, stripping, or cross-threading. A compromised connection can cause the trial to detach inside the surgical site or become stuck on the handle. Examine the smooth outer profile for deep scratches, gouges, or dents. A damaged surface can alter the exact dimensions of the trial or unintentionally damage the reamed cancellous bone bed during insertion. Verify the visibility of the laser-etched size markings. If the numbering becomes faded or illegible, the instrument poses a risk of incorrect implant sizing and must be replaced.