. 2022 Apr 2;23:313. doi: 10.1186/s12891-022-05236-6

Table 2.

AOFAS/Ankle hindfoot scale scores

Author, Year	Study Group	No. of Ankles	Average Preoperative Score ± SD	Average Postoperative Score ± SD	P Value
Gormeli et al.,2015 [41]	MF/HA MF/PRP MF	14 13 13	44.9 ± 9.2 43.6 ± 7.6 42.7 ± 7.1	75.1 ± 9.5 85.1 ± 6.1 68.3 ± 10.1	<.005 <.005 <.005	<.005
Doral et al.,2012 [43]	MF/HA MF	41 16	38.8 ± 9.1^a 44.1 ± 7.3^a	61.9 ± 9.1^a 59.8 ± 9.3^a	<.001 <.001	>.05
Shang et al.,2016 [42]	MF/HA MF	17 16	66.7 ± 4.1 65.2 ± 4.7	87.6 ± 7.6 80.8 ± 8.5	<.001 <.001	>.05

Author, Year

Study Group

No. of Ankles

Average Preoperative Score ± SD

Average Postoperative Score ± SD

P Value

Preoperative vs. Postoperative

MF/HA vs. MF

Gormeli et al.,2015 [41]

MF/HA

MF/PRP

44.9 ± 9.2

43.6 ± 7.6

42.7 ± 7.1

75.1 ± 9.5

85.1 ± 6.1

68.3 ± 10.1

<.005

Doral et al.,2012 [43]

MF/HA

38.8 ± 9.1^a

44.1 ± 7.3^a

61.9 ± 9.1^a

59.8 ± 9.3^a

<.001

>.05

Shang et al.,2016 [42]

MF/HA

66.7 ± 4.1

65.2 ± 4.7

87.6 ± 7.6

80.8 ± 8.5

<.001

>.05

Abbreviations: AOFAS The American Orthopedic Foot and Ankle Score, SD Standard deviation, MF Microfracture surgery, HA Hyaluronic acid, PRP Plate-rich plasma

^aImputed values for AOFAS total score. Values were reported separately as AOFAS pain and functional subscores by Doral et al.