| Patient Safety |
30-day postoperative mortality |
Deaths per 1,000 procedures, with procedure type and patient-risk adjustment |
Separate results for primary joint replacement, revision surgery, trauma surgery, and spinal procedures. |
Enables comparison of short-term surgical safety across hospitals and case-mix groups. |
Audited hospital database, discharge records, and documented 30-day follow-up. |
| Infection Control |
Surgical-site infection rate |
Cases per 100 operations, reported as superficial, deep, or organ-space infection |
Include surveillance through at least 30 days, or up to 90 days where an implant-related definition applies. |
Infection can result in reoperation, prolonged hospitalization, implant removal, and substantial additional cost. |
Standardized infection definitions, microbiology records, antibiotic records, and post-discharge surveillance. |
| Thromboembolic Safety |
Postoperative venous thromboembolism |
Symptomatic events per 1,000 procedures, including deep-vein thrombosis and pulmonary embolism |
Specify whether events were diagnosed during admission or within 30 and 90 days after surgery. |
Shows the effectiveness of risk assessment, thromboprophylaxis, mobilization, and discharge education. |
Imaging-confirmed diagnosis, anticoagulation records, and documented follow-up period. |
| Durability |
Revision-free survival |
Percentage revision-free at 1, 5, and 10 years |
Define revision as any operation involving removal, exchange, or addition of an implanted component. |
Long-term implant and surgical durability is more informative than early pain relief alone. |
National or regional arthroplasty registry data, implant records, and verified reoperation records. |
| Functional Recovery |
Change in validated patient-reported outcome score |
Baseline score versus 6-week, 3-month, 6-month, and 12-month scores |
Use the same validated questionnaire, language version, scoring direction, and follow-up schedule for every patient. |
Captures pain, mobility, daily activities, and quality of life from the patient’s perspective. |
Completed patient questionnaires with response rate, missing-data policy, and clinically meaningful change threshold. |
| Pain Relief |
Postoperative pain improvement |
0–10 numerical pain scale, reported as baseline, discharge, and follow-up values |
Report median or mean change together with the proportion of patients achieving meaningful improvement. |
Helps buyers distinguish technical surgical success from actual patient-perceived benefit. |
Standardized pain assessments, analgesic consumption, and follow-up documentation. |
| Hospital Efficiency |
Length of stay |
Median inpatient days with interquartile range |
Separate uncomplicated primary procedures from revision, trauma, infection, and medically complex cases. |
Shorter appropriate stays may indicate efficient pathways, but should not be interpreted without readmission and complication data. |
Admission and discharge timestamps, enhanced-recovery pathway records, and risk-adjusted case mix. |
| Unplanned Care |
30-day unplanned readmission |
Readmissions per 100 discharged patients |
Identify whether readmission was related to infection, thromboembolism, bleeding, pain, wound problems, or unrelated disease. |
Provides a more complete view of outcome quality after discharge. |
Hospital readmission system, regional medical-record linkage, and verified reasons for readmission. |
| Reoperation |
Unplanned reoperation within 90 days |
Operations per 100 index procedures |
Include debridement, fixation revision, implant exchange, wound closure, and other unplanned procedures. |
Reoperation is a direct indicator of early failure, complication burden, and resource utilization. |
Operating-room records, discharge records, and linked follow-up data. |
| Recovery Speed |
Time to functional milestones |
Days to mobilization, stair use, independent walking, or return to work |
Define each milestone in advance and report the percentage of patients achieving it by the stated time point. |
Useful for buyers evaluating enhanced-recovery programs and patient travel planning. |
Physiotherapy records, discharge assessments, and structured patient follow-up. |
| Data Reliability |
Follow-up completion rate |
Patients with completed follow-up divided by eligible patients × 100 |
Report the denominator, the number lost to follow-up, contact methods, and reasons for missing data. |
High follow-up completeness reduces the risk that favorable results are caused by selective reporting. |
Patient registry, appointment records, telephone or digital follow-up logs, and missing-data audit. |
| Traceability |
Implant and instrument traceability |
Percentage of cases with complete implant, lot, serial, and sterilization records |
Records should connect the patient, procedure date, implant components, lot or serial numbers, and sterilization cycle. |
Supports recalls, adverse-event investigations, revision planning, and international documentation requirements. |
Implant labels, operating-room records, sterilization logs, and electronic medical records. |
| Patient Selection |
Risk-adjusted outcome reporting |
Outcome stratification by age, sex, BMI, comorbidity, diagnosis, and primary or revision status |
Present both crude results and adjusted results; avoid comparing hospitals with materially different case complexity without adjustment. |
Risk adjustment makes cross-border supplier and hospital comparisons more meaningful. |
Preoperative assessment, anesthesia records, comorbidity coding, and statistical methodology. |