Width of the medial tibiotalar joint.
OBJECTIVE
To determine the extent to which the width of the space in the medial tibiotalar joint depends on plantar flexion.


METHODS
Thirty healthy volunteers were studied by means of a.p. roentgenograms of the left ankle both in a neutral position and in plantar flexion.


RESULTS
The medial joint space showed significant widening (average 0.65 mm) between the neutral position and plantar flexion.


CONCLUSIONS
When ankle joint injuries are studied on radiographs, the position of the foot must be taken into consideration.
Fiirgaard
B
B
Department of Radiology, Municipal Hospital, Aarhus, Denmark.
Iversen
J K
JK
de Carvalho
A
A
D000328:Adult; D000842:Ankle / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D016512:Ankle Injuries / Q000000981:diagnostic imaging; D000843:Ankle Joint / Q000033:anatomy & histology / Q000000981:diagnostic imaging* / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D011859:Radiography