Knee Common Presentations

Question 1

Patellar Fractures

Answer 1

• 20 - 50Y
• MALES
• MOI: TRAUMA
• Painful/limited end-ROM

Question 2

Patellar Tendon Rupture

Answer 2

Patellar <40Y
- MOI: eccentric overload extensor mechanism/trauma, JUMP LANDING
- Hx degenerative tendinopathy common, TKA, ACLR
- Limited/absent knee EXT
- Painful, limited ROM/
- Quad retraction (muscle bulge, patella alta)

Question 3

Quad Tendon Rupture

Answer 3

Quad: >40Y + MALE
- MOI: eccentric overload extensor mechanism/trauma, REGAINING BALANCE/RAPID QUAD CONTRACTION
- Hx degenerative tendinopathy common, TKA, ACLR
- Limited/absent knee EXT
- Painful, limited ROM/
- Quad retraction (muscle bulge, patella alta)

Question 4

Osgood-Schlatter Disease

Answer 4

• MALES
• BILATERALLY
• Prominent tibial tuberosity
• End-range FLEX/EXT pain

Question 5

Articular Cartilage Defects

Answer 5

• 10-20Y
• Active, MALE
• Bilaterally
• Lateral aspect of medial condyle
• MOI: Trauma or insidious onset
• Hemarthrosis w/in 2 hours of dislodgment
• Global, deep knee pain - aggravated w/activity, relieved with rest
• Stiffness/swelling w/activities
• Boggy end-feel
• Muscle Guarding
• Mechanical symptoms

Question 6

Meniscus Lesion

Answer 6

• MOI: Contact trauma vs non-contact trauma or degenerative OA
• Audible “pop” w/directional change
• Delayed effusion (6-24h)
• Mechanical symptoms
• Painful/limited ROM/MMT
• Boggy end-feel

Question 7

ACL Lesion

Answer 7

• NON-CONTACT INJURY > Contact Injury
• FEMALES (↑ Q-angle/narrow intercondylar notch, hormones/laxity)
• Artificial/Dry Turf
• Obesity
• Soccer/Volleyball
• Audible “pop”
• IMMEDIATE swelling
• Mechanical symptoms
• Painful/limited ROM

Question 8

PCL Sprain

Answer 8

• Audible “pop”
• MOI: posterior F at proximal anterior-tibia, violent hyperextension of knee, fall on flexed knee w/PF
• Limited/painful ROM/MMT
• Guarding

Question 9

MCL Sprain

Answer 9

• Soccer, football, hockey
• MOI: valgus force,
• Painful/limited ROM/MMT

Question 10

LCL Sprain

Answer 10

• Varus trauma at knee
• Directional change
• Boggy end feel

Question 11

Patellofemoral Instability

Answer 11

• Hx of the same
• Reflexive inhibition (giving way)
• Peri-patellar pain
• Hypermobility of joint
• Bruising/swelling

Question 12

Patellofemoral Pain Syndrome

Answer 12

• Younger athletes
• FEMALE
• Insidious
• Crepitus
• Mechanical symptoms
• Patella alta/baja
• Painful/limited ROM/MMT
• Painful/hyper vs hypomobility of PF joint

Question 13

Osteoarthropathy of Knee

Answer 13

• Hx knee injury/trauma/surgery, hypermobility, obesity, extreme PA levels,
• Older Adult (>50Y)
• FEMALES
• Insidious onset
• Mechanical/Crepitus
• empty/early hard end-feel

Question 14

Arthrofibrosis

Answer 14

• Hx: Trauma/knee Sx (TKA)
• Progressive increase in pain/ROM limitations
• Stiffness (AM worse), crepitus
• Hypomobile joint
• Firm -end feel

Question 15

Genu Recurvatum

Answer 15

• FEMALES
• Hx knee injury/joint laxity, forced knee extension injury, jump landing EXT,
• “knee instability”
• Impaired proprioception at knee

Question 16

Patellar Tendinopathy

Answer 16

• Basketball/volleyball players
• Aggravated w/ jumping/extensor mechanism

Question 17

ITB Friction Syndrome

Answer 17

• Hx: running, downhill skiers, jumping sports, weight lifters, cyclers
• Insidious/progressive
• Aggravated w/ activity

Question 18

Bakers Cyst

Answer 18

• Local swelling proximal to popliteal fossa
• Pain knee FLEX/EXT ROM

Question 19

Bursitis

Answer 19

• Direct mechanical irritation
• Local TTP, swelling