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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 Plusâ„¢, 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 Plusâ„¢, 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.