Positive Posterior Drawer Test in Total Knee Arthroplasty 



73 yo M with hx of L TKA 12 yrs ago at OSH - did well until 8 mo ago when he jumped off the back of a truck. 

Pain. Swelling. Flexion instability. 

Exam: 

Stable varus / valgus 

+ post drawer

Xrays show a well fixed Scorpio PS TKA in neutral alignment. 

Scorpio has a low profile box and can be mistaken for CR.

Intra-op: 

Fractured post. 

Liner revision only. 



- John Shields, MD, FAAOS @jointdocShields



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