Introduction Overview a tibial eminence fracture, also known as a tibia spine fracture, is an intra-articular fracture of the bony attachment of the ACL on the tibia that is most commonly seen in children from age 8 to 14 years during athletic activity treatment is closed reduction and casting or open reduction and fixation depending on the degree of displacement and whether it can be reduced Epidemiology incidence rare injuries demographics most common in ages 8-14 Pathophysiology traumatic mechanism rapid deceleration or hyperextension/rotation of the knee, as in sports same mechanism that would cause ACL tear in adult fall from bike or motorcycle Associated conditions occur in 40% of eminence fractures meniscal injury collateral ligament injury capsular damage osteochondral fracture Prognosis overall prognosis is good with 85% returning to prior level of sport Anatomy Osteology tibial eminence non-articular portion of the tibia between the medial and lateral tibial plateau Consists of two spines: ACL attaches to medial spine ACL insertion is 9mm posterior to the intermeniscal ligament and adjacent to anterior horns of meniscus PCL does not attach to tibia spines Pediatric specific Intercondylar emminence in incompletely ossified and is more prone to failure than ligamentous structures Failure occurs through deep cancellous bone Fracture usually confined to intercondylar emminence, but it may propogate to tibial plateau, medial is most common Ligaments anterior cruciate ligament inserts 10-14 mm behind anterior border of tibia and extends to medial and lateral tibial eminence Classification Modified Meyers and McKeever Classification Type I Nondisplaced (<3mm) Type II Minimally displaced with intact posterior hinge Type III Completely displaced Type III+ Type III fracture with rotation Type IV Completely displaced, rotated, comminuted Presentation Symptoms pain in knee Physical exam inspection immediate knee effusion due to hemarthrosis Knee usually in flexed position ROM often limited secondary to pain once pain is controlled, lack of motion may indicate meniscal pathology displaced/entrapped fracture fragment positive anterior drawer Imaging Radiographs recommended views AP lateral most useful for determining fracture displacement intercondylar CT useful for pre-operative planning used when fracture displacement cannot be determined by plan radiographs MRI better at determining associated ligamentous/meniscal damage than CT or radiographs Majority of fractures show no additional internal derangement (meniscus injuries) Treatment Nonoperative closed reduction, aspiration of hemarthrosis, immobilization in full extension indications non-displaced type I and reducible type II fractures reduction technique see techniques below immobilization cast in extension for 3-4 weeks patients get extremely stiff with prolonged immobilization allows for gradual rehab program Operative ORIF vs. all-arthroscopic fixation indications Type III or Type II fractures that cannot be reduced type II fractures may fail to reduce due to entrapped medial meniscus, entrapped intermeniscal ligament, or the pull of the lateral meniscus block to extension Techniques Closed Reduction aspiration when tense hemarthrosis is present, needle aspiration with injection of lidocaine may help extend knee reduction extend the knee to full extension or hyperextension to observe for fragment reduction immobilization cast is placed at 0 degrees of flexion cast in extension for 3-4 weeks confirmation lateral radiograph to confirm reduction, and then serial radiographs weekly to observe maintanence of reduction CT or MRI may be used when adequecy of reduction is unclear Arthroscopic fixation approach standard arthroscopic portals technique reduction debride fracture disengage entrapped meniscus or intermeniscal ligament medial meniscus entrapment most common reduce fracture fracture fixation suture fixation Large avulsed fragments may be repair directly Smaller avulsed fragments (usually in older patient) may require sutures through the base of the ACL pros avoids physis growth at level of physis will disrupt non-absorbable sutures to allow for continued growth cons technically demanding screw fixation pros less demanding than suture fixation possibly earlier mobilization cons requires larger osteochondral fragment hardware irritation not possible for small, comminuted fragments impingement from improperly placed screw risk of iatrogenic comminution requires removal to prevent physeal tethering physeal damage post-operative care immobilize in extension for 7-10 days and repeat radiographs to ensure no displacement early range of motion length of limited weight bearing is controversial Open fixation same principles as arthroscopic Complications Loss of motion very common, especially loss of extension may be due to displaced fragment impinging on femoral notch Arthrofibrosis more common with surgical reconstruction Growth arrest ACL laxity incidence 38-100%, more common in operatively treated knees Lachman's laxity may be noted compared to contralateral limb functional instability is uncommon
Tibial Eminence (Spine) Avulsion Fracture ORIF Technique guide are not considered high yield topics for orthopaedic standardized exams including the ABOS, EBOT and RC. Authors: Neil Duplantier
QUESTIONS 1 of 12 1 2 3 4 5 6 7 8 9 10 11 12 Previous Next Sorry, this question is for PEAK Premium Subscribers only Upgrade to PEAK Sorry, this question is for PEAK Premium Subscribers only Upgrade to PEAK Sorry, this question is for PEAK Premium Subscribers only Upgrade to PEAK Sorry, this question is for PEAK Premium Subscribers only Upgrade to PEAK Sorry, this question is for PEAK Premium Subscribers only Upgrade to PEAK Sorry, this question is for PEAK Premium Subscribers only Upgrade to PEAK Sorry, this question is for PEAK Premium Subscribers only Upgrade to PEAK Sorry, this question is for PEAK Premium Subscribers only Upgrade to PEAK (OBQ11.237) A 19-year-old patient is undergoing an arthroscopic treatment of a right knee with suture fixation via transosseous tunnels shown in the video in Figure V. What is the most likely postoperative complication? Review Topic QID: 3660 FIGURES: V 1 Infection 1% (22/1625) 2 Arthrofibrosis 73% (1191/1625) 3 Spontaneous osteonecrosis of the knee (SONK) 4% (60/1625) 4 Hardware prominence in the intercondylar notch necessitating removal of implants 16% (257/1625) 5 Increased posterior tibial excursion 5% (83/1625) Select Answer to see Preferred Response PREFERRED RESPONSE 2 (OBQ06.56) The AP radiograph in Figure A demonstrates an injury in a 13-year-old soccer player. What is the equivalent injury in a skeletally mature patient? Review Topic QID: 167 FIGURES: A 1 Patella tendon rupture 3% (16/596) 2 Posterior cruciate ligament tear 2% (13/596) 3 Anterior cruciate ligament tear 91% (545/596) 4 Lateral meniscus tear 1% (7/596) 5 Posteromedial capsular avulsion 2% (10/596) Select Answer to see Preferred Response PREFERRED RESPONSE 3 Sorry, this question is for PEAK Premium Subscribers only Upgrade to PEAK Sorry, this question is for PEAK Premium Subscribers only Upgrade to PEAK
Tibial Spine Avulsion Fractures Arthroscopic Reduction and Internal Fixation - Dr. Jazrawi Pediatrics - Tibial Eminence Fracture - Treatment Consult Dr. Jazrawi and Dr. Strauss discuss their technique for tibial spine avulsion fr... 5/15/2016 542 views Tibial Eminence Fracture fixation Pediatrics - Tibial Eminence Fracture - Surgical Techniques Demonstrates tibial eminence fracture suture fixation. 7/15/2012 6252 views
Avulsed tibial spine,torn MCL, avulsed patellar tuberosity (C1427) Pediatrics - Tibial Eminence Fracture HPI - motor vehicle accident ,acute onset of swollen painful knee inability to weight bear what is the best method of fixation for tibial spine .patellar tuberosity.torn MCL 2/23/2013 109 1 10