Irish National Orthopaedic Register (INOR)

Data Collection Type
National data collections of health and social care in Ireland

National Office of Clinical Audit (NOCA).

Year established

2014 (December, collection commenced at the development site). The electronic system went live in May 2016.

Statement of purpose

The main objective of INOR is to monitor the quality and safety of arthroplasty, ensure safe surgical practice for patients and to maintain a register of implants used. INOR will support hospitals should an implant recall occur.

INOR’s secondary objectives are to:
- define the epidemiology of joint replacement surgery in Ireland
- provide timely information on the outcomes of joint replacements
- identify risk factors for poor outcomes
- assist in the assessment and education of clinicians.

INOR benefits can be found at this link:

In scope:
- INOR collects data on elective hip and knee joint replacement arthroplasties (surgeries), both primary and revision, that are carried out in participating hospitals.

Out of scope:
- Elective hip or knee arthroplasty for trauma patients
- Elective hip or knee arthroplasty for bone tumours
- Other joints e.g. ankle, elbow and shoulders

Coverage (geographical and temporal)

When INOR implementation is complete, all elective public and private Orthopaedic Centres in Ireland will be included. As of Dec 2021, INOR includes nine participating hospitals.

Data collection on participating patients is for the lifetime of the implant or the patient.


INOR is an electronic point of care system, designed to collect demographic, clinical and implant component data on patients admitted to hospital for primary and revision arthroplasty surgery in hospitals nationally. Clinical and patient-reported outcome information is also collected at defined time points following patients’ surgery.

Data users

Hospital managers/ CEO’s , hospital clinical teams, hospital groups, clinical programme for trauma and orthopaedics.

Data content

Includes details of the following: pre-operative assessment (comorbidities/body mass index), peri operative clinical data (diagnosis/procedure/implant component details), post-operative assessment (complications/incidents), patient reported outcome measures (PROMs), demographic patient details include name and gender.
Consent status (consent to participate in the Register) is also collected and for non-consenting patients, no demographic data is stored on INOR.

Data dictionary

Not currently publicly available but available on request, please see contact details at

National-level identifier variables

No national level identifiers are available.

Equity stratifiers

Age and gender.

Data collection methodology

Data collection is in real time at time of procedure and ongoing. Data is entered directly onto INOR by the clinical team, at the point of care (Nurses, Surgeons and Patients).
The INOR system collects data in real-time in:
- Pre- and Post-Operative assessment units to record Pre-Operative MDS information, Patient Consent, Post-Operative assessment MDS information and PROMs
- Orthopaedic Theatres to record Peri-operative MDS information, Components and to provide a Post-Operative note to consultants
- NOCA to monitor and manage the system, including the provision of register Reports.

Clinical coding scheme

ICD-10-AM for coding diagnoses and ACHI for procedures.

Size of national collection

Project currently in roll-out phase. There are almost 20,000 patients in the Register. The number of patients annually will continue in increase as hospital participation increases.

Publication frequency

First National report published in November 2021. Hospital reports sent to hospitals.

From 2022 onwards Key Quality Indicators will be reported quarterly to the Hospitals and Hospital Groups.

Accessing data

Open data portal access


Email contact
Telephone contact