Sports Flashcards
ACL origin.
Posteromedial aspect of lateral femoral condyle.
ACL length.
30mm
ACL diameter.
11mm
Bundles of ACL are named based on this.
Relationship at tibial insertion.
Two bundles of ACL
Anteromedial, posterolateral.
Anteromedial ACL bundle tight in this position.
Flexion.
Posterolateral bundle of ACL tight in this position.
Extension.
The anteromedial bundle of ACL resists this motion.
Anterior translation of tibia.
The posterolateral bundle of ACL resists this motion.
Rotation.
Lachman test evaluates this bundle of ACL.
Anteromedial
Pivot shit test evaluates this bundle of ACL
Posterolateral
Collagen composition of ACL.
90% Type I, 10% type III
Blood supply to ACL.
Middle geniculate artery.
PCL origin.
Anterolateral medial femoral condyle.
PCL length.
38 mm
PCL diameter.
13 mm
PCL bundles.
Anterolateral, posteromedial
Anterolateral PCL bundle tight in.
Flexion.
Posteromedial PCL bundle tight in.
Extension.
This meniscofemoral ligament is anterior to PCL.
Humphrey.
This meniscofemoral ligament is posterior to PCL
Wrisberg.
Origination of the superficial MCL.
3mm proximal and 5mm posterior to medial femoral epicondyle.
LCL origin relative to the insertion of popliteus tendon.
Posterior and superior.
Most anterior structure inserting on proximal fibula.
LCL
The LCL is tight in ____ and lax in ____.
Tight in extension, lax in flexion
Primary stabilizer of tibial external rotation.
Posterolateral corner.
Structures in layer I of medial knee.
Sartorius and fascia.
Structures in layer II of medial knee.
Superficial MCL, posterior oblique ligament, semimembranosus.
Structures in layer III of medial knee.
Deep MCL, capsule.
Structures in layer I of lateral knee.
IT band, biceps femoris, fascia.
Structures in layer II of lateral knee.
Patellar retinaculum, patellofemoral ligament.
Structures in layer III of lateral knee.
Arcuate ligament, fabellofibular ligament, capsule, LCL.
Order of insertion of structures on the proximal fibula anterior to posterior.
LCL, popliteofibular ligament, biceps femoris.
Components of the posterolateral corner (7).
- Biceps femoris
- IT band
- Popliteus
- Popliteofibular ligament
- Lateral capsule
- Arcuate ligament
- Fabellofibular ligament
Meniscus is primarily composed of this type of collagen.
Type I.
Medial or lateral meniscus more mobile?
Lateral
Greater AP dimension, medial or lateral condyle of femur?
Lateral
Origin of the MPFL in relation to the adductor tubercle.
Anterior and distal.
Knee ligament with greatest tensile strength.
MCL
Major knee ligament with least tensile strength.
LCL
Radiographic view most sensitive for early osteoarthritis.
Weight bearing 45 degree flexed posteroanterior view.
Most common arthroscopic complication.
Iatrogenic articular cartilage damage.
What is more common, medial or lateral mesniscus tear?
Medial.
Primary determinant of healing potential to meniscus.
Vascular supply.
Gold standard for meniscal repair.
Inside-out technique with vertical mattress sutures.
What nerve is at risk during medial meniscus repair.
Saphenous.
What nerve is at risk during lateral meniscus repair.
Peroneal.
Position of the saphenous nerve relative to semitendinosis, gracilis, and sartorius.
Anterior to semiT and gracilis. Posterior to inf border of sartorius.
Position of the peroneal nerve relative to biceps femoris.
Posterior to biceps femoris.
Meniscal cysts usually involve the medial or lateral meniscus?
Lateral.
These occur in conjunction with horizontal cleavage tear of lateral meniscus.
Meniscal cyst.
Popliteal (Baker) cysts usually form here.
Between semimembranosus and medial head of gastroc.
Crucial for mensical transplantation success.
Graft size accurate to within 5% of native.
In situ force of ACL is highest at ____ flexion.
30 deg.
Most sensitive physical exam maneuver for acute ACL injury.
Lachman.