PMC3504211_01
Lateral view and AP view radiographs of the knee taken upon presentation at the Accident and Emergency Department.
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fig1
AP view and lateral view radiographs of the knee prior to replacing the mobile bearing.
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fig2
Spontaneous relocation was considered (Figure 2), but due to concerns regarding recurrent dislocation and possible damage to the bearing, a mini-open approach to the knee was made, and the bearing was observed to have relocated.
Lateral view and AP view radiograph of the knee taken following operation.
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However, it had significant wear on its superior articular surface in the form of pitting and a small area of delamination of about five squared millimetres, and it was replaced by a 7 mm polyethylene liner (Figure 3).