Table 2.
Comparison between the current study and previous studies
| Study | Knees | Follow-up (months) | Rate of survival rTKA | Preoperative clinical score | Postoperative clinical score | ROM preoperative | ROM postoperative | Radiographic findings on tibial component | Complications |
|---|---|---|---|---|---|---|---|---|---|
| Haas et al. 1995 | 67 | 42 | 83% | 49 (KSS) | 76 (KSS) | 80° | 95° |
4% radiolucent lines. Complete but nonprogressive 69% radio-opaque lines along tibial rods |
13% (10/67) Intraoperative fracture, rupture of quadriceps tendon, wound complication, postoperative dislocation, patellectomy, hardware removal, infection, stiffness |
| Gofton et al. 2002 | 89 | 71 | 94% | 85 (KSS) | 133 (KSS) | 88° | 98° |
Common incomplete radiolucent lines 6% (5/89) complete radiolucent lines that led to 5 revisions 52% radio sclerotic lines near press-fit stem |
8% (7/89) postoperative hematoma, quadriceps turndown, patellar clunk syndromes, femoral stem disengagement, tibial tubercle osteotomy migration |
| Shannon et al. 2003 | 63 | 69 | 81% |
56 (KSS) 49 (KSS-F) |
81 (KSS) 62 (KSS-F) |
n/a | n/a |
57% radiolucent lines 6% (4/63) cases with tibial loosening signs 97% incomplete parallel sclerotic lines around the stem |
16% (10/63) aseptic loosening, heterotopic ossification, patellar osteolysis, wound complication |
| Bottner et al. 2006 | 33 | 38 | 94% |
42 (KSS) 48 (KSS-F) |
83 (KSS) 76 (KSS-F) |
94° | 105° | 3% (1/33) complete progressive radiolucent lines | 6% (2/33) aseptic loosening |
| Wood et al. 2008 | 135 | 24 | 98% |
38 (KSS) 32 (KSS-F) |
86 (KSS) 55 (KSS-F) |
87° | 108° |
11% not progressive tibial radiolucent lines 2% (3/13) progressive radiolucent lines 90% partial or complete radio sclerotic lines around stems, not progressive over time |
5% (7/135) aseptic loosening, medial collateral ligament rupture, infection |
| Peters et al. 2009 | 184 | 49 | 93% |
135 (KSS) 63 (KSS-F) |
168 (KSS) 82 (KSS-F) |
n/a | n/a |
3% incomplete radiolucent lines No complete radiolucent lines |
16% (29/178) infections, stiffness polyethylene exchange, patellofemoral clunk syndrome |
| Sah et al. 2011 | 88 | 65 | 84% |
46 (KSS) 48 (KSS-F) |
85 (KSS) 68 (KSS-F) |
n/a | n/a |
19% (17/88) partial and nonprogressive tibial radiolucent lines 1% (1/88) radiographic loosening tibial component 75% (66/88) radio sclerotic lines around tibial stems, predominantly at the tip |
10% (9/88): aseptic loosening, infections, periprosthetic fracture |
| Current study | 36 | 31 | 92% |
30 (KSS) 20 (KSS-F) |
86 (KSS) 72 (KSS-F) |
76° | 111* |
31% (11/36) incomplete, nonprogressive radiolucent lines 3% (1/36) radiographic loosening of tibial component |
17% (6/36) infections, early polyethylene insert loosening, aseptic loosening |
KSS Knee Society Score, KSS-F Knee Society Score Functional