PF disorders part 1

Question 1

what are some common causes of ant knee pain?

Answer 1

• patellofemoral pain syndrome
• plica syndrome
• fat pad impingement/syndrome
• chondromalacia
• patellar maltracking
• bursisits

Question 2

what is the differential diagnosis of meniscal pathology?

Answer 2

• onset of effusion
• torsional factors
• mechanical symptoms
• tibiofemoral joint line tenderness
• mcmurray/appley compression/thessaly test
• need a mechanism to tear meniscus in young individuals
• older could have degenerative issues

Question 3

what is the differential diagnosis for patellofemoral pathology?

Answer 3

• minimal or no effusion
• repetitive use
• patellofem joint tenderness
• infrapatellar fat pad tenderness
• few reliable and valid special tests

Question 4

what is the plica?

Answer 4

• synovial thickening present in ~50% of population
• synovial fold can be present medial or lateral and frequently courses up over patella
• medial aspect most common site of pain
• may occur w overuse or trauma
• snapping or popping around patella
• often with deep KF activites like a catcher

Question 5

explain PFP with movement coordination deficits

Answer 5

• result in an increased dybamic Q angle by: moving patella medially with respect to ASIS and/or tibial tuberosity
• increases torsion force and stress across all structures of patellofemoral joint

Question 6

explain PFP with muscle performance deficits

Answer 6

• lower isometric strength
• hip adbuction (26% less)
• ER 36% less
• differences for strength were greatest for extension

Question 7

explain PFP with strength and movement coordination

Answer 7

• hip ER strength: eccentrically controls femoral IR in WB
• hip adbuction strength: controls fem adduction in WB
• weakness in hip ER or ABD strength may lead to increased femoral IR and ADD