L component; external malrotation f tibial element Insertion tendinopathy of iliotibial tract as a result of external malrotation of tibial element posterior tibial slope Patellofemoral OANonsurgicallyF.L.fLLoosening of tibial andor femoral component InfectionNonsurgicallyP.M.fLPatellar resurfacingL.S.fLInfection,malrotation of tibial element Loosening of tibial componentPatellofemoral OA; posterior,tibial slope Patellar resurfacingK.G.fLLoosening and external malrotation of tibial element posterior tibial slope Patellofemoral OARevision tibial componentM.D.fRLoosening of tibial componentPatellar resurfacingH.R.mLLoosening of femoral element Loosening of femoral andor tibial component Breakage of polyethylene inlay,loosening of tibial element Loosening of tibial andor femoral element immediately after periprosthetic fissure Loosening of tibial andor femoral element Loosening of tibial andor femoral component; low grade infectionLoosening of femoral componentRevision plannedA.C.fRIncipient loosening of tibial component and external malrotation NonsurgicallyS.C.fRBreakage of polyethylene inlay,posterior tibial slope Modify of inlay No evidence for loosening; consolidation of periprosthetic fracture,patellofemoral OA External malrotation of tibial component NonsurgicallyR.C.fRW.M.mRRevision encouraged,treated nonsurgically due to comorbidities Patient underwent physiotherapy; to date asymptomatic.Page ofK.A.fLNo proof for loosening. No malrotation.Hirschmann et al. BMC Musculoskeletal Disorders ,: biomedcentralTable Patients` demographics,time from primary TKA,suspected diagnosis prior to SPECTCT,final diagnosis PubMed ID:https://www.ncbi.nlm.nih.gov/pubmed/28661555 and performed therapy (Continued) S.H m L Triathlon Stryker (tibial cemented,femoral uncemented) TC PlusTM,Smith Nephew (tibial cemented,femoral uncemented) BalanSys get MK-1439 Mathys (tibial cemented,femoral uncemented) Triathlon Stryker (tibial cemented,femoral uncemented) Triathlon Stryker (tibial cemented,femoral uncemented) Triathlon Stryker (tibial cemented,femoral uncemented) All-natural Knee Zimmer (tibial cemented,femoral uncemented) LCS Depuy (tibial cemented,femoral uncemented) LCS Depuy (tibial cemented,femoral uncemented) Loosening of tibial andor femoral component Loosening of tibial andor femoral element Loosening of tibial andor femoral component Loosening of tibial andor femoral element Loosening of tibial element,patellar OA Early loosening of tibial component,patellar OA Oversized femoral and tibial component Loosening of femoral andor tibial element Loosening of femoral andor tibial component Patellofemoral OA Patellar resurfacingS.H.mLLoosening of tibial componentRevision tibial components.H.mRPatellofemoral OA,external malrotation of tibial element No proof for loosening. No malrotationNonsurgicallyB.W.mLPatient underwent physiotherapy; to date asymptomatic. Planned Patellar resurfacingM.D.fRPatellofemoral OA,posterior tibial slope F.L.fRPatellofemoral OA,external malrotation of tibial component Persistent synovitis as a result of oversized femoral and tibial element,tibial internal malrotation Planned Patellar resurfacingL.R.fRFemoral and tibial element revisionK.L.mLLoosening of femoral component and tibial external Revision advisable,malrotation treated nonsurgically as a consequence of comorbidities No evidence for loosening. No malrotation Patient underwent physiotherapy; to date asymptomatic.L.J.fRPage ofHirschmann et al. BMC Musculoskeletal Issues ,: biomedcentralPage ofFigure SPECTCT imaging of a patient with pa.