Knee 2 Flashcards
Degrees of movement available at knee?
2 Degrees available
Flexion/Extension
Slight medial and lateral rotation
Knee Extensors
Rectus Femoris
Vastus Lateralis
Vastus Intermedius
Vastus Medialis
Rectus Femoris attachments
Two heads
From: LH- AIIS
SH- Supra acetabular groove of ilium
To: Quadriceps Femoris Tendon
Vastus Lateralis attachments
From: Most lateral part of intertrochanteric line running posterior to gluteal tuberosity
To: Quad Fem Tendon
Vastus Intermedius attachments
Deep to Rectus Femoris
From: Upper 2/3 of anteriolateral surface of femur
To: Tibial tuberosity via Quad Fem Tendon
Vastus Medialis attachments
From: Medial part of intertrochanteric line
To: TibialTuberosity via Quad Fem tendon
Knee Flexors (7)
Hamstrings
Biceps Femoris
Semitendinosus
Semimembranosus
Sartorius
Gracilis
Gastrocnemius
Plantaris
Biceps femoris attachments
From: LH- inferomedial of upper area of ischial tuberosity
SH- lateral lip o linea aspera
To: Head of fibula and lateral tibial condyle
Semitendinosus attachments
From: Inferomedial part of upper ischial tuberosity
To: Medial surface of tibia
Semimembranosus attachments
From: Ischial Tuberosity (suprolateral impression)
To: Medial and Posterior surface of Medial tibial condyle
Sartorius Attachments
From: ASIS
To: Inferomedial of tibial tuberosity (below knee)
Gracilis attachments
From: external surface of body of pubis
To: medial surface of tibia shaft
Gastrocnemius attachments
2 heads
From: Medial and Lateral condyles of posterior surface of distal femur
To: Posterior surface of calcaneus via calcaneal tendon
Plantaris attachments
Lies deep to gastrocnemius
From: Lateral supracondylar line of femur
To: Posterior surface of calcaneus via calcaneal tendon
(Same insertion as gastrocnemius)
Knee medial rotators (4)
Semitendinosus
Semimembranosus
Popliteus
Sartorius
Knee lateral rotator
Biceps femoris
Muscles that stabilize knee joint
Popliteus
Tensor fascia Lata
Popliteus attachments
From: Lateral femoral condyle
To: Posterior surface of proximal tibia
What muscle unlocks the knee and how
Popliteus
Laterally rotates femur on tibia
Hamstring insertions
Biceps femoris- head of fibula
Semi-tendinosus- medial surface of proximal tibia shaft
Semi-membranosus- medial condyle of tibia
Borders of the popliteal fossa
Medially:
Semitendinosus
Semimembranosus
Medial head of gastrocnemius
Laterally:
Biceps femoris
Lateral head of gastrocnemius
Floor:
Popliteal surface on femur
Roof:
Fascia and skin
Contents of the popliteal fossa
Popliteal artery and vein
Common perineal and tibial nerve
Lymph nodes and fat
