ATTR 219 1st Edition Lecture 9VastusLateralisOrigin: lateral surface of femur below greater trochanter and upper half of lineaasperaInsertion: lateral border of patella to patellar tendon and tibial tuberosityAction: Extension of knee/lower legNerve: femoralArtery: Lateral femoral circumflexVastusIntermediusOrigin: upper 2/3 of anterior femur and lower ½ of lineaasperaInsertion: superior border of patella to patellar tendon and tibial tuberosityAction: extenstion of knee/lower legNerve: femoralArtery: lateral femoral circumflexVastusMedialisOrigin: length of lineaaspera medial supracondylar line and tendon of adductor magnusInsertion: medial border of patella to patellar tendon and tibial tuberosityAction: extension of knee/lower legNerve: femoralThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Artery: femoral and profunda femora Anterior and Posterior Meniscofemoral LigamentsPosterior (ligament of Wrisberg)-posterior portion of lateral meniscus to lateral surface of medial femoral condyle Anterior(ligament of Humphrey)- posterior portion of lateral meniscus to lateral surface of medial femoral condyleJoint Capsule- sleeve-like band of ligaments that encircles the knee jointRetinaculumMedial retinaculum- attaches along medial border of patella- Primary function is to keep patella in position mediallyLateral retinaculum- attaches along lateral border of patella- Primary function is to hold patella in position laterallyMenisci-2 menisci of cartilage-Medial is C-shaped, lateral is O-shapedMedial meniscus- has attachment to deep portion of MCL-during flexion, semimembranosus helps retract medial meniscus to prevent injuryLateral meniscus- not as firmly attached as medial and this less prone to injury-able to slide more freely Menisci possess little to no innervation= little to no pain when injuredVascularity of Menisci-outer 1/3 has good blood supply-middle 1/3 has questionable blood supply-inner 1/3 is completely avascularDiscoid Meniscus- solid meniscus with no semilunar shape-found more so in females than males-occurs usually to lateral-loud snap at knee during flexion and extensionOther musclesSartoriusOrigin: anterior superior iliac spine (ASIS)Insertion: upper anterior medial condyle of tibia- pes anserine insertionAction: flexion of hip, flexion of knee/lower legNerve: femoralArtery: femoralGracillisOrigin: anterior medial edge of pubic symphysisInsertion: upper anterior/medial condyle of tibia- pes anserine insertionAction: adduct hip/thigh, flexion of knee/lower leg, internally rotates hipNerve: obturatorArtery: profundafemoris, doturator, medial femoral circumflexTensor Fascia LataeOrigin: anterior iliac crest and ASISInsertion: illiofiboral tract and lateral femoral condyle, lateral tibial condyle and head of fibulaAction: abduction of hip, flexion of hipNerve: superior gluteal Artery: lateral femoral circumflex and super glutealPopliteusOrigin: lateral condyle of femurInsertion: posterior surface of tibia above soleal lineAction: internally rotates tibia and femur, weak flexor of legNerve: tibiaArtery: inferior genicularsBursa of the KneeBursa: closed, fluid-filled sacs lined with synoviumSuprapatellar bursa- superior to patella between quadriceps tendon and femur- largest bursa inkneePrepatellar bursa- anterior between skin and outer surface of patellaDeep infrapatellar bursa- posterior to patellar tendon and anterior to infrapatellar fat padsSuperficial infrapatellar bursa-between skin and anterior surface of infrapatellar tendonPes anserine bursa- between pes anserine tendon and MCL on proximal medial side of tibiaBicep femoris bursa- between tendons of bicep femoris and fibular attachment of LCLPopliteus bursa- posterior lateral aspect of knee under popliteus – often continuation of synovial sacSemimembranosus bursa- between semimembranosus insertion and origin of