Posterolateral rotatory instability of elbow (PLRI) = most common chronic elbow instability; implies some injury to LCL complex
LUCL most important for stability
IMAGING
General Features
Radiographic Findings
CT Findings
MR Findings
Ultrasonographic Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Staging, Grading, & Classification
CLINICAL ISSUES
Presentation
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
Acosta Batlle J et al: The elbow: review of anatomy and common collateral ligament complex pathology using MRI. Insights Imaging. 10(1):43, 2019
Conti Mica M et al: Lateral collateral ligament injuries of the elbow - chronic posterolateral rotatory instability (PLRI). EFORT Open Rev. 1(12):461-8, 2016
Bonnaig NS et al: Repair and reconstruction of the lateral ulnar collateral ligament. Instr Course Lect. 64:243-6, 2015
Anakwenze OA et al: Posterolateral rotatory instability of the elbow. Am J Sports Med. 42(2):485-91, 2014
Daluiski A et al: Direct repair for managing acute and chronic lateral ulnar collateral ligament disruptions. J Hand Surg Am. 39(6):1125-9, 2014
Kim BS et al: Ligamentous repair of acute lateral collateral ligament rupture of the elbow. J Shoulder Elbow Surg. 22(11):1469-73, 2013
Konin GP et al: US of the elbow: indications, technique, normal anatomy, and pathologic conditions. Radiographics. 33(4):E125-47, 2013
Rhyou IH et al: Collateral ligament injury in the displaced radial head and neck fracture: correlation with fracture morphology and management strategy to the torn ulnar collateral ligament. J Shoulder Elbow Surg. 22(2):261-7, 2013
Wenzke DR: MR imaging of the elbow in the injured athlete. Radiol Clin North Am. 51(2):195-213, 2013
Lin KY et al: Functional outcomes of surgical reconstruction for posterolateral rotatory instability of the elbow. Injury. 43(10):1657-61, 2012
Rhyou IH et al: Dual reconstruction of the radial collateral ligament and lateral ulnar collateral ligament in posterolateral rotator instability of the elbow. Knee Surg Sports Traumatol Arthrosc. 19(6):1009-12, 2011
Husarik DB et al: Ligaments and plicae of the elbow: normal MR imaging variability in 60 asymptomatic subjects. Radiology. 257(1):185-94, 2010
Zoner CS et al: Detailed MRI-anatomic study of the lateral epicondyle of the elbow and its tendinous and ligamentous attachments in cadavers. AJR Am J Roentgenol. 195(3):629-36, 2010
Stewart B et al: Sonography of the lateral ulnar collateral ligament of the elbow: study of cadavers and healthy volunteers. AJR Am J Roentgenol. 193(6):1615-9, 2009
Posterolateral rotatory instability of elbow (PLRI) = most common chronic elbow instability; implies some injury to LCL complex
LUCL most important for stability
IMAGING
General Features
Radiographic Findings
CT Findings
MR Findings
Ultrasonographic Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Staging, Grading, & Classification
CLINICAL ISSUES
Presentation
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
Acosta Batlle J et al: The elbow: review of anatomy and common collateral ligament complex pathology using MRI. Insights Imaging. 10(1):43, 2019
Conti Mica M et al: Lateral collateral ligament injuries of the elbow - chronic posterolateral rotatory instability (PLRI). EFORT Open Rev. 1(12):461-8, 2016
Bonnaig NS et al: Repair and reconstruction of the lateral ulnar collateral ligament. Instr Course Lect. 64:243-6, 2015
Anakwenze OA et al: Posterolateral rotatory instability of the elbow. Am J Sports Med. 42(2):485-91, 2014
Daluiski A et al: Direct repair for managing acute and chronic lateral ulnar collateral ligament disruptions. J Hand Surg Am. 39(6):1125-9, 2014
Kim BS et al: Ligamentous repair of acute lateral collateral ligament rupture of the elbow. J Shoulder Elbow Surg. 22(11):1469-73, 2013
Konin GP et al: US of the elbow: indications, technique, normal anatomy, and pathologic conditions. Radiographics. 33(4):E125-47, 2013
Rhyou IH et al: Collateral ligament injury in the displaced radial head and neck fracture: correlation with fracture morphology and management strategy to the torn ulnar collateral ligament. J Shoulder Elbow Surg. 22(2):261-7, 2013
Wenzke DR: MR imaging of the elbow in the injured athlete. Radiol Clin North Am. 51(2):195-213, 2013
Lin KY et al: Functional outcomes of surgical reconstruction for posterolateral rotatory instability of the elbow. Injury. 43(10):1657-61, 2012
Rhyou IH et al: Dual reconstruction of the radial collateral ligament and lateral ulnar collateral ligament in posterolateral rotator instability of the elbow. Knee Surg Sports Traumatol Arthrosc. 19(6):1009-12, 2011
Husarik DB et al: Ligaments and plicae of the elbow: normal MR imaging variability in 60 asymptomatic subjects. Radiology. 257(1):185-94, 2010
Zoner CS et al: Detailed MRI-anatomic study of the lateral epicondyle of the elbow and its tendinous and ligamentous attachments in cadavers. AJR Am J Roentgenol. 195(3):629-36, 2010
Stewart B et al: Sonography of the lateral ulnar collateral ligament of the elbow: study of cadavers and healthy volunteers. AJR Am J Roentgenol. 193(6):1615-9, 2009