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