Table 3.

Studies with mid-term follow-up after HF-TKA

Study	Number of knees	Minimum follow up (years) (range)	Preoperative flexion (°)	Postoperative flexion (°)	HF activity assessment	Aseptic loosening (number [%])
Kim et al. [8]	100	10 (10 to 10.6)	125	135	No	0
Endres and Wilke [25]	79	5 (All 5)	82	122	No	0
Seng et al. [26]	36	5 (All 5)	123	128	No	0
Tarabichi et al. [27]	152	5 (All 5)	125	140	No	1 (0.5)
Tanavalee et al. [22]a	178	6 (6 to 7.3)	138	135	No	0
Wohlrab et al. [28]	19	5 (All 5)	106	117	No	1 (3)
Current study	260	5 (5 to 13)	123	138	Yes	2 (0.8)

HF-TKA high flexion total knee arthroplasty, HF high-flexion

^a131 knees had adequate radiographs were included for evaluation