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 |