Musculoskeletal III (MSK III) Flashcards
What is the Lower Extremity?
The lower extremity is everything from the Hip (innominate bone) to the toes.
What are all joints included in the lower extremity?
- Hip
- Knee
- Ankle
- Foot
What is the Joint-Hip?
- Innominate
- Femur
- Innominate is 1 pelvis bone
- Ball and socket joint
- Lots of motion happens here
What is the Bones Hip-Innominate?
- There are 2 innominates (right and left) in the pelvis
- One innominate is made up from 3 fused bone (ilium, ischium and pubis)
- The place where the femur sits in is termed the acetabulum
- The acetabulum is formed by all three fused bones
How many innominates are there in the Hip bone?
2 (right & left) in the pelvis
What is one innominate made up from?
3 fused bone (ilium, ischium and pubis)
Which fused bone do you sit on?
ischium
The place where the femur sits in is termed the…
acetabulum
The ______ is formed by all 3 fused bones
acetabulum
How many bones join at acetabulum?
3
The Bone Hip-Innominate is…
- 2 innominates + sacrum + coccyx = Pelvis
- Abdominal muscles, glutes hamstrings, adductors and one quad attaches to this bone
One Hip-innominate attaches to:
- Sacrum
- Femur
- Other innominate
What is the Bones Hip-Femur?
- Strongest bone in the
body - Part of the largest joint.
- Shape can be very different from one person to another
What is the Joint-Knee made up of?
- Femur
- Tibia
- Patella
Which is the largest joint in the body?
Knee joint
* Tons of ligaments
* Synovial capsule
(but has most problems b/c of weight)
Is the fibula part of the knee joint?
it’s weak
technically not part of knee
Define joint
What is the Bones Knee-Femur?
The distal femur
- Place for patella
- The femur basically sits on top of the tibia
** Medial condyle is bigger
Which is bigger in terms of the femur in the knee?
medial condyle
What is the Bones Knee-Tibia?
- The tibia is considered the shin bone
- Found medially compared to tibia
- Quite sharp anteriorly
- get rug burn/bruises on this part
What is the Bones Knee-Patella?
- The patella is considered a sesamoid bone
- Found inside the quad tendon
- Apex is found inferiorly
What are the actions of the hip?
- Flexion
- Extension
- Abduction
- Adduction
- External/Internal Rotation
What are the actions of the knee?
- Flexion/Extension of foot more so?
- Flexion/Extension of knee
What is apart of the Anterior Thigh?
- Iliopsoas
- Quadriceps Femoris (quads)
- Rectus Femoris (rectus means front/centre)
- Vastus lateralis
- Vastus medialis
- Vastus Intermedius
- Sartorius (tear drop)
What is apart of the Glute area?
- Gluteus maximus (rhon. shaped - posterior)
- Gluteus medius (lateral)
- Gluteus minimis (lateral)
- Deep lateral rotators (piriformis)
- makes legs go laterally
What is apart of the Posterior Thigh?
Hamstrings
* Biceps femoris
* Semitendinosis (strong ones - medial)
* semimembranosis (medial)
The Deep lateral rotators (piriformis)…
sits on synatic nerve & feels like a herniated disc pain
What is apart of the Medial Thigh?
- Adductors (when you pulled a groin muscle)
- Adductor magnus (biggest/thickest)
- Adductor brevis
- Adductor longus
- Pectineus
- Gracilis