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Table 1 Patients` demographics, time from primary TKA, suspected diagnosis before SPECT/CT, final diagnosis and performed treatment

From: Clinical value of SPECT/CT for evaluation of patients with painful knees after total knee arthroplasty- a new dimension of diagnostics?

No. Initials Sex Age (yrs) Time from primary TKA (mths) Side Type of primary prosthesis Suspected diagnosis before SPECT/CT Final diagnosis after SPECT/CT Final treatment
1 R.R. m 50 56 R Natural Knee®, Zimmer (tibial cemented, femoral uncemented) Loosening of tibial component Patellofemoral OA Patellar resurfacing
2 H.U. f 73 29 R Natural Knee®, Zimmer (tibial cemented, femoral uncemented) Loosening of tibial and/or femoral component Patellofemoral OA Non-surgically
3 S.A. f 85 59 R BalanSys®, Mathys (tibial cemented, femoral uncemented) Patellofemoral hyperpression Patellofemoral hyperpression due to flexion of femoral component; external malrotation >10°of tibial component Non-surgically
4 F.L. f 79 36 L Triathlon®, Stryker (tibial cemented, femoral uncemented) Loosening of tibial and/or femoral component Insertion tendinopathy of iliotibial tract due to external malrotation of tibial component >15°; posterior tibial slope <3° Non-surgically
5 P.M. f 55 68 L BalanSys®, Mathys (tibial cemented, femoral uncemented) Infection Patellofemoral OA Patellar resurfacing
6 L.S. f 54 20 L Triathlon®, Stryker (tibial cemented, femoral uncemented) Infection, malrotation of tibial component Patellofemoral OA; posterior, tibial slope <3°, Patellar resurfacing
7 K.G. f 77 116 L LCS®, Depuy (tibial cemented, femoral uncemented) Loosening of tibial component Loosening and external malrotation of tibial component >15°, posterior tibial slope >15° Revision tibial component
8 M.D. f 65 32 R LCS®, Depuy (tibial cemented, femoral uncemented) Loosening of tibial component Patellofemoral OA Patellar resurfacing
9 H.R. m 67 48 L BalanSys®, Mathys (tibial cemented, femoral uncemented) Loosening of femoral component Loosening of femoral component Revision planned
10 A.C. f 38 36 R LCS®, Depuy (tibial cemented, femoral uncemented) Loosening of femoral and/or tibial component Incipient loosening of tibial component and external malrotation >10° Non-surgically
11 S.C. f 88 212 R LCS®, Depuy (tibial cemented, femoral uncemented) Breakage of polyethylene inlay, loosening of tibial component Breakage of polyethylene inlay, posterior tibial slope 14° Change of inlay
12 R.C. f 52 56 R TC Plus™, Smith&Nephew (tibial cemented, femoral uncemented) Loosening of tibial and/or femoral component after periprosthetic fissure No evidence for loosening; consolidation of periprosthetic fracture, patellofemoral OA Non-surgically
13 W.M. m 74 34 R LCS®, Depuy (tibial cemented, femoral uncemented) Loosening of tibial and/or femoral component External malrotation of tibial component >15° Revision recommended, treated non-surgically due to comorbidities
14 K.A. f 77 48 L Natural Knee®, Zimmer (tibial cemented, femoral uncemented) Loosening of tibial and/or femoral component; low grade infection No evidence for loosening. No malrotation. Patient underwent physiotherapy; to date asymptomatic.
15 S.H m 79 18 L Triathlon®, Stryker (tibial cemented, femoral uncemented) Loosening of tibial and/or femoral component Patellofemoral OA Patellar resurfacing
16 S.H. m 63 60 L TC Plus™, Smith&Nephew (tibial cemented, femoral uncemented) Loosening of tibial and/or femoral component Loosening of tibial component Revision tibial component
17 S.H. m 63 60 R BalanSys®, Mathys (tibial cemented, femoral uncemented) Loosening of tibial and/or femoral component Patellofemoral OA, external malrotation >10° of tibial component Non-surgically
18 B.W. m 72 48 L Triathlon®, Stryker (tibial cemented, femoral uncemented) Loosening of tibial and/or femoral component No evidence for loosening. No malrotation Patient underwent physiotherapy; to date asymptomatic.
19 M.D. f 60 9 R Triathlon®, Stryker (tibial cemented, femoral uncemented) Loosening of tibial component, patellar OA Patellofemoral OA, posterior tibial slope <3° Planned Patellar resurfacing
20 F.L. f 78 9 R Triathlon®, Stryker (tibial cemented, femoral uncemented) Early loosening of tibial component, patellar OA Patellofemoral OA, external malrotation >15° of tibial component Planned Patellar resurfacing
21 L.R. f 61 18 R Natural Knee®, Zimmer (tibial cemented, femoral uncemented) Oversized femoral and tibial component Persistent synovitis due to oversized femoral and tibial component, tibial internal malrotation >10° Femoral and tibial component revision
22 K.L. m 80 104 L LCS®, Depuy (tibial cemented, femoral uncemented) Loosening of femoral and/or tibial component Loosening of femoral component and tibial external malrotation >15° Revision recommended, treated non-surgically due to comorbidities
23 L.J. f 77 108 R LCS®, Depuy (tibial cemented, femoral uncemented) Loosening of femoral and/or tibial component No evidence for loosening. No malrotation Patient underwent physiotherapy; to date asymptomatic.