Exam 2 Flashcards
What anatomical landmarks does the femur consist of? (6)
- medial condyle
- lateral condyle
- medial epicondyle
- lateral epicondyle
- patellar groove
- intercondylar fossa
What anatomical landmarks does the tibia consist of? (4)
- medial tibial plateau
- lateral tibial plateau
- tibial tuberosity
- patella
What two capsules are found in the articulation and ligamentous support? (surrounding whole knee)
joint capsule and synovial capsule
What are the two collateral ligaments called?
medial collateral ligament MCL
lateral collateral ligament LCL
What are the two cruciate ligaments called?
anterior cruciate ligament ACL
posterior cruciate ligament PCL
True or False:
You have medial and lateral meniscus sides
True
The ______ __/__ of the meniscus is vascular
outer 1/3
The ______ __/__ of the meniscus is avascular and must receive its nourishment through diffusion of synovial fluid
inner 2/3’s
Which layer, inner or outer, of the meniscus has good blood supply?
outer layer
How does blood supply run through the knee in order?
- femoral artery
- popliteal artery
- posterior tibial arteries
True or False:
There are several branches off the popliteal artery that surround the knee.
True
What are the other nerve branches in the knee that come off the sciatic nerve?
- common fibular nerve
- tibial nerve
What are the muscles of the medial knee?
- (pes anserine)
1. gracillis
2. sartorius
3. semitendinosus
What is the other name for the pes anserine muscles?
goose foot
Where do the pes anserine muscles attach?
attach anteromedial side of proximal tibia
Goose foot is the prime site for _______ and knee pain
bursitis
What does the past medical history of knee injuries consist of? (5)
- past history of injuries and surgeries
- injury to related body area
- general medical conditions
- arthritis in multiple joints, history of falls, cardiac conditions, HTN, medication changes (X-rays etc)
- past rehab programs for any knee problems
What does the history of present conditions of knee injuries consist of?
- location of pain
- MOI
- WB status at the time of injury
- associated sounds or sensation
- onset of injury
What does inspection consist of for knee injuries?
- observe walking gait; antalgic (limping) = needs walking aid
- how do they stand, rise from sitting, move from standing to sitting?
What exactly do you observe on the body for a knee examination inspection? (anterior side)
- patella
- patellar tendon
- quads muscle group
- alignment of femur to tibia (valgum or varum)
- tibial tuberosity
- Osgood-Schlatter Disease
What is Osgood Schlatter Disease?
rapid bone growth, can cause pain
What exactly do you observe on the body for a knee examination inspection? (medial side)
- medial aspects
- vastus mediallis
What exactly do you observe on the body for a knee examination inspection? (lateral)
- lateral aspect
- fibular head
What exactly do you observe on the body for a knee examination inspection? (posterior)
- hammies group
- popliteal fossa
What does a posterior sag of the tibia imply?
PCL tear
- typically is hyperextension (genu recurvatum)
What are the 10 palpation sites of the anterior structures?
- patella
- patellar tendon
- tibial tuberosity
- quadriceps tendon
- vastus medialis oblique
- vastus medialis
- rectus femoris
- vastus lateralis
- sartorius
- pes anserine tendon
True or False:
The patellar tendon is the end of the quadriceps tendon
True
What are the 8 palpation sites of the medial structures?
- medial meniscus and joint line **
- MCL
- medial femoral condyle & epicondyle
- medial tibial plateau
- pes anserine tendon and bursa
- semitendinosus tendon
- gracillis
- sartorius
What are the 8 palpation sites of the lateral structures?
- joint line **
- fibular head
- LCL
- popliteal muscle
- biceps femoris
- IT band
- Gerdy’s tubercle
- lateral femoral condyle
What are the 8 palpation sites of the posterior structures?
- popliteal fossa
- biceps femoris
- semimembranosus
- semitendinosus
- ischial tuberosity
- lateral head of the gastroc
- medial head of the gastroc
- popliteal artery
For joint and muscle function assessment, what is the AROM for flexion and extension?
0 degrees to 135-145 degrees
For joint and muscle function assessment, what are the two muscle groups you test for MMT?
quads and hammies
For joint and muscle function assessment, what is the PROM movements you test?
flexion and extension
True or False:
For joint stability tests, you test the following:
anterior instability
posterior instability
medial instability
lateral instability
True
What is the description of the anterior drawer test?
If anterior movement is greater than for the other leg, the test is positive for sprain or tear of the ACL
What is the description of Lachman’s test?
Anterior translation of the tibia greater than the other leg may indicate a sprained or torn ACL
What is the description of the posterior drawer test?
posterior translation of the tibia greater than the other leg may indicate a sprained or torn PCL
What is the description of the valgus stress test?
excessive movement in the valgus direction in a postive test of positive MCL sprain or tear, medial capsule damage, cruciate ligament damage. Test at 25 degrees knee flexion to isolate the MCL
What is the description of the varus stress test?
excessive varus demformity shown during testing indicates possible LCL sprain or tear, lateral capsule damage, or cruciate damage. Test at 25 degree knee flexion to isolate the LCL
For neurologic testing, what are the indications for knee injury?
- referred pain
- tib/fib joint laxity
- posterolateral instability
- dislocation of tib/fib joint
- lower quarter screen
For vascular testing, where are the examinations of the distal pulses in the knee?
- posterior tibial artery
- dorsal pedal artery
Which special test would you use for the following?
- MCL sprain
- LCL sprain
- ACL sprain
- PCL sprain
MCL = valgus stress
LCL = varus stress
ACL = anterior drawer
PCL = posterior drawer
For a meniscial tear, what is the MOI?
rotation and flexion of the knee or repeated stress
- meniscial cysts
- discoid meniscus
What else is a discoid meniscus known as?
snapping knee syndrome
What is the description of McMurray’s test?
popping, clicking, pain indicates a meniscal tear at the sign to the pain
What are osteochondral lesions?
cartilage damage in joints
What are osteochondral defects?
fracture of the articular cartilage and underlying bone
- osteochondritis dissecans
What is the description of Wilson’s test?
pain that is experienced during knee extension with internal tibial rotation and then relieved when the tibia is externally rotated is a positive test for osteochondritis dissecans
What is the description of Nobel’s test?
if pain is felt under the thumb that is placed on the IT band, it is positive for IT band inflammation. Bursitis in the area or inflammation over the lateral femoral condyle. Usually pain is felt at about 30 degrees of knee flexion
What is the description of Ober’s test?
if the leg does not drop at all, that is a positive sign for severe IT band tightness. If it drops partially, you have moderate tightness. If it drops fully the test is negative
What are common injuries and pathologies of the knee?
- ACL tear
- meniscus tear
- unhappy triad
- osteoarthritis of the knees
- TKA/replacement
- patellofemoral pain
- lateral tracking of patella
What does the unhappy triad consist of?
MCL, ACL, and meniscus
What are systemic risk factors of OA?
- age (10 fold increase from 30 to 65)
- genetics
- gender (M <50: higher risk / W >50: higher risk)
- nutritional (low vitamin C and D intake)
What are joint biomechanical risk factors of OA?
- joint trauma
- obesity (knee, hip, hand)
- occupation
- abnormal joint biomechanics (dysplasia, malalignment, instability, abnormal innervation)
- knee extensor weakness
- sports with joint risk (volleyball)