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Orthopaedic Proceedings
Vol. 104-B, Issue SUPP_7 | Pages 30 - 30
1 Jul 2022
TEN-YEAR SURVIVAL OF CEMENTLESS OXFORD MEDIAL UKA USING MICROPLASTY INSTRUMENTATION: A REPORT OF 1000 CASES WITH FOUR-YEAR MINIMUM FOLLOW-UP USING MODERN INDICATIONS FOR SURGERY
Middleton R Jackson W Alvand A Bottomley N Price A
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Abstract

Background

Since 2012 we have routinely used the cementless Oxford medial unicompartmental knee arthroplasty (mUKA), with microplasty instrumentation, in patients with anteromedial osteoarthritis (AMOA) meeting modern indications. We report the 10-year survival of 1000 mUKA with minimum 4-year follow-up.

Methods

National Joint Registry (NJR) surgeon reports were interrogated for each senior author to identify the first 1,000 mUKAs performed for osteoarthritis. A minimum of 4 years follow-up was required. There was no loss to follow-up. The NJR status of each knee was established. For each mUKA revision the indication and mechanism of failure was determined using local patient records. The 10-year implant survival was calculated using life-table analysis.

The Bone & Joint Journal
Vol. 100-B, Issue 12 | Pages 1572 - 1578
1 Dec 2018
Outcome-based commissioning of knee arthroplasty in the NHS
Middleton R Wilson HA Alvand A Abram SGF Bottomley N Jackson W Price A
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Aims

Our unit was identified as a negative outlier in the national patient-reported outcome measures (PROMs) programme, which has significant funding implications. As a centre that carries out a high volume of unicompartmental knee arthroplasty (UKA), our objectives were: 1) to determine whether the PROMs programme included primary UKA when calculating the gain in Oxford Knee Score (OKS); and 2) to determine the impact of excluding primary UKA on calculated OKS gains for primary knee arthroplasty.

Materials and Methods

National PROMs data from England (2012 to 2016) were analyzed. Inclusion of UKA cases in the national PROMs programme was determined using clinical codes. Local OKS gain was calculated for UKA and TKA and compared with the published PROMs results for 2012/13.