Survival of the pegged glenoid component in shoulder arthroplasty: part II

Cadaveric study validating in vitro monitoring techniques to measure the failure mechanism of glenoid implants against clinical CT

“…A study investigating total shoulder arthroplasty outcomes (TSA) found loosening to be the most common complication. 1,2 This has been confirmed by other recent studies 3,4 and has accounted for up to 44% of glenoid implant failures. 5 In clinical and cadaveric studies on glenoid fixation, the absence of visual observation requires investigators to depend on the presence of radiolucent lines in radiographs and clinical examination to judge the quality of the implant fixation.…”

Risk factors for loosening of cemented glenoid components in anatomical shoulder arthroplasty

“…Radiographic loosening of a cemented polyethylene glenoid component frequently occurs in the long term and is one of the main reasons for revision surgery [8,13,14,24]. Several risk factors have been described in the literature, and we aimed to analyze some of these in a multicenter investigation in a homogenous cohort of patients with primary osteoarthritis.…”

“…It is well known that loosening of the glenoid component is one of the major concerns of total shoulder arthroplasty, especially in the long run [3,7,8]. Several studies highlighted this topic in recent years, and there is a clear trend toward superior long-term outcomes of cemented glenoid components compared to uncemented metal-backed implants [4,12,20].…”

Evaluation of thirty eight cemented pegged glenoid components with variable backside curvature: two-year minimum follow-up

“…Cemented all-polyethylene keeled or in-line three-pegged glenoid components appear to have similar stability during the first two years after surgery [15,22]. In 2017, McLendon et al [12] found that at 7.2 years average followup, the rate of the Cofield II all-polyethylene in-line threepegged component survival free from revision was of 99% at five years and 83% at ten years. Component survival rates free from radiographic failure at five and ten years were 92% and 43%.…”

“…Currently, all glenoid all-polyethylene components available are offered in one curvature, flat or convex, based upon the average non-arthritic curvature [3,6,12,19,26,29]. Under these conditions, the glenoid bone surface must be reamed to be adapted to the implant geometry, and excessive reaming can be necessary in some cases compromising the subchondral bone thickness.…”