Excellent survival and outcomes with fixed-bearing medial UKA in young patients (≤ 60 years) at minimum 10-year follow-up

Abstract

Purpose To evaluate whether long-term (10-year minimum) patient outcomes and survival of ixed-bearing medial unicompartmental knee arthroplasty (UKA) in patients aged ≤ 60 years were favorable despite non-conventional age criteria. Methods The authors reviewed the records of 91 consecutive medial UKAs performed in patients aged ≤ 60 by a single surgeon. All patients received the same ixed-bearing M/G Unicompartmental Knee System. Patients records were updated, noting complications or revisions, and Oxford Knee Scores and overall satisfaction collected. If deceased, the general practitioner or next of kin provided data. Results Of the initial 91 knees, 10 were revised, 6 were deceased, and 1 was lost to follow-up. The inal cohort of 74 knees was aged 54.3 ± 4.3 years (range 41.8-60.6) at index surgery. Using revision of any component as endpoint, the present series had a KM survival of 92.9% (CI 84.8-96.7%) at 10 years, and 87.8% (CI 78.4-93.2%) at 15 years, and a single nonfatal DVT was reported. At inal follow-up of 15 ± 1.3 years (range 11-18), OKS (available for all 74 knees) was 38.4 ± 8.4 (range 18-48). Overall patients were pleased or very pleased with 72 of the knees (97%). Conclusion Fixed-bearing medial UKA yields favorable results in the treatment of single compartment osteoarthritis of the knee in patients ≤ 60 years. The present study demonstrates low complication rates, good-to-excellent long-term patient outcomes, and satisfactory implant survival for this age group considering the advantages of UKA. Level of evidence Level IV, retrospective cohort study.

Excellent outcomes with Oxford Uni-compartmental knee arthroplasty in anteromedial osteoarthritis patients (≤60 years) at mid-term follow-up

“…The overall patient satisfaction rate in our cohort was 93%, and was similar in both age groups. Several studies have reported high satisfaction in younger patients after UKA [ 15 , 17 ]. Dalury et al [ 16 ] reported satisfactory results for patients aged 46–59 years at mid-term follow-up.…”

“…Dalury et al [ 16 ] reported satisfactory results for patients aged 46–59 years at mid-term follow-up. Mannan et al [ 17 ] found that 97% of the patients aged 60 years or less were pleased or very pleased after UKA at minimum 10-year follow-up.…”

“…However, we observed significant improvement and satisfactory functional outcomes in both age groups. Mannan et al [ 17 ] reviewed a consecutive series of 91 medial UKAs performed in patients aged 60 years or younger at minimum 10-year follow-up, and demonstrated good-to-excellent long-term patient outcomes with 92.9 and 87.8% implant survival at 10 years and 15 years respectively. Lee et al [ 18 ] also reported similar post-UKA outcome scores and implant survival in patients younger or older than 55 years at minimum 10 years follow-up.…”

A Morphometric Fixed-Bearing Unicompartmental Knee Arthroplasty Can Reproduce Normal Knee Kinematics. An In Vitro Robotic Evaluation

“…The use of unicompartmental implants has increased in popularity over the last decades due to excellent clinical results as it facilitates minimal invasive surgery, faster recovery, and a higher postoperative knee function. Several studies have reported good joint survival and superior function following UKA, especially in young and very active patients [ [5] , [6] , [7] ].…”

Superior component position during robotic-assisted Oxford unicompartmental knee arthroplasty (UKA) compared with conventional technique: A 5-year follow-up study

“…There are a variety of advantages of UKA, for instance, less blood loss, faster recovery, as well as improved proprioception [1,2]. It has been proven that good to excellent outcomes are found in the mid-term and long-term follow-ups in properly selected patients who underwent UKA [1,3].…”