Table 4.

Patient Demographics and Characteristics (n = 10)^∗

Age, y	41.9 ± 15
Sex, males/females, n	4/6
BMI	28.3 ± 6.3
PAIS location, n (%)
Right	6 (60)
Left	4 (40)
Follow-up time, mo	13.3 ± 2.9
History of previous surgery
Os trigonum resection	3
ORIF of ankle	1
Subtalar arthrodesis	1
Loose body removal/tibial exostectomy	1
ATFL reconstruction/arthroscopy for AMI	1
Previous IONA for PAIS	1
None	2
Time from previous surgery to IONA, mo	22.1 ± 24.0

AMI, anteriomedial impingement; ATFL, anterior talofibular ligament; BMI, body mass index; IONA, in-office needle arthroscopy; ORIF, open reduction internal fixation; PAIS, posterior ankle impingement syndrome.

^∗Data are shown as mean ± standard deviation unless otherwise indicated.