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Joint depression of 3mm
37%
1945/5297
Ipsilateral femoral shaft fracture
1%
39/5297
Joint widening of 6mm
48%
2564/5297
Ipsilateral tibial shaft fracture
38/5297
Displaced tibial spine fracture
13%
678/5297
Select Answer to see Preferred Response
Figure A shows a Schatzker II tibial plateau fracture. Joint widening of 6mm is commonly asociated with a lateral meniscal injury. Tibial plateau fractures are commonly associated with soft tissue injuries and the operative surgeon needs to be aware of these commonly associated injuries. Gardner et al. (2005) examined 62 consecutive Schatzker type II fractures with radiographs and MRIs preoperatively. They found that joint depression greater than 6mm and widening of greater than 5mm was associated with a lateral meniscal injury over 80% of the time. Gardner et all. (2006) that looked at MRIs for 103 consecutive patients with all types of tibial plateau fractures, only one patient had no soft tissue injuries. 94 (91%) patients had a lateral meniscal injury, 79 (77%) patients had cruciate ligament injury and 70 (68%) patients had a posterior lateral corner injury. Figure A: shows a Schatzker type II fracture of a tibial plateau. Incorrect Answers: Answer 1: The above mentioned articles only found associations with lateral meniscal injuries when joint depression was at least 6mm. Answer 2: No known association with soft tissue injuries after tibial plateau fractures. Answer 4: No known association with soft tissue injuries after tibial plateau fractures. Answer 5: Suggestive of an ACL injury, not an injury to the lateral meniscus.
2.6
(37)
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