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-bearing versus fixed-bearing UKA There is controversy in the literature regarding which type of bearing is preferable: mobile or fixed. In 2015, Ko et al reported a systematic review of comparative studies between fixed and mobile bearings focussing on

multidirectional stresses, they often have complications: wear of the bearings, loosening or patellar complications. 10 Their worse outcomes compared to unconstrained implants, as well as higher infection rates, have reduced their use in some neurological

bearings, it has been theorized that a surgeon may tend to choose a tight knee and risk slight valgus overcorrection to avoid bearing dislocation in mobile UKA. This results in greater contact stresses and over-loading of the lateral compartment

normally functioning Oxford UKA (Phase-1 and 2) bearings demonstrated a mean wear of 0.01 mm/year. 85 , 86 Such a low rate will not cause in vivo penetration or alter alignment (±1° degree varus per 1 mm wear). 85 However, several factors can accelerate

higher degrees of flexion within a deepening femoral sulcus, 13 and are at a disadvantage for wear, since bearings perform best when softer materials are concave rather than convex. 37 The modified dome or Gaussian shape with a convex centre and

reduce the infective microbial load around the prosthesis and wound, including breaking down biofilm. 1 , 11 Surgical management involves open deep debridement of the joint and thorough wound irrigation and wherever possible modular bearings should be

MR Oh KJ . Outcome of unicompartmental knee arthroplasty: a systematic review of comparative studies between fixed and mobile bearings focusing on complications . Knee Surg Relat Res 2015 ; 27 : 141 – 148 . 20. Cao Z

. 18. Collier MB , Engh CA Jr , McAuley JP , Engh GA . Factors associated with the loss of thickness of polyethylene tibial bearings after knee arthroplasty . J Bone Joint Surg [Am] 2007 ; 89–A : 1306 – 1314

I pick? Bone Joint J 2013 ; 11 : 129 – 132 . 59. Peters CL Mulkey P Erickson J Anderson MB Pelt CE . Comparison of total knee arthroplasty with highly congruent anterior-stabilized bearings

Erickson J Anderson MB Pelt CE . Comparison of total knee arthroplasty with highly congruent anterior-stabilized bearings versus a cruciate-retaining design . Clinical Orthopaedics and Related Research 2014 472 175 – 180 . ( https://doi.org/10