Table 1 Demographic and clinical characteristics of the patients with lateral tibiofemoral osteoarthritis

Sex^*

 Male

11 (34%)

7 (29%)

n.s.^†

 Female

21(66%)

17 (71%)

Age (years)^‡

66.53 ± 11.76

69.33 ± 6.22

n.s.^§

BMI (kg/m²)^‡

24.82 ± 2.41

25.82 ± 1.93

n.s.^∥

Diabetes mellitus^*

2 (6%)

4 (17%)

n.s.^¶

Depression disorder^*

0 (0%)

2 (8%)

n.s.^¶

Angina

0 (0%)

0 (0%)

n.s

Cerebrovascular accident

4 (12.5%)

0 (0%)

n.s.^¶

Site of osteoarthritis (year)^*

 Right

19 (59%)

14 (58%)

n.s.^†

 Left

13 (41%)

10 (42%)

Bilaterality of lateral knee OA

6 (18.8%)

8 (33%)

n.s.^†

OA site of contralateral side of knee

 None

26 (81.3%)

13 (54%)

n.s.^†

 Medial OA

0 (0%)

3 (11%)

 Lateral OA

6 (18.8%)

8 (31%)

Duration of symptoms (months)

46.94 ± 58.71

47.80 ± 75.86

n.s.^§

Follow-up period (years)

3.73 ± 2.13

3.60 ± 2.55

n.s.^§

Ipsilateral side pain VAS^‡

4.06 ± 1.87

5.79 ± 2.06

0.002^§,**

Contralateral side pain VAS^‡

3.94 ± 1.32

4.33 ± 2.70

n.s.^§

Trauma history^*

11 (34%)

4 (17%)

n.s.^†

Injection history^*

20 (63%)

20 (83%)

n.s.^†

Meniscectomy history^*

 None

20 (63%)

20 (83%)

n.s.^†

 Ipsilateral

8 (25%)

3 (13%)

 Contralateral

4 (12%)

1 (4%)

Range of knee motion (°)^‡

 Flexion contracture

2.14 ± 3.93

5.24 ± 8.29

n.s.^§

 Further flexion

135.00 ± 4.08

123.10 ± 15.29

0.01^§,**