MSK CTC Flashcards
what is involved in external snapping hip syndrome
IT band over greater troch
what is involved in internal snapping hip syndrome
iliopsoas over iliopectineal eminence
what is involved in intra-articular snapping hip
labral tear/joint body
what is the cross over sign in FAI
in pincer impingement (women) it refers to the anterior and posterior rims of the acetabulum forming a “figure of 8” sign on AP pelvis
what is a segond fracture and the mechanism of injury
fracture of the lateral tibial plateau, occurs with INTERNAL rotation and 75% have ACL tears
what is a reverse segond fracture and what is it associated with
fracture of the medial tibial plateau, assoc with PCL tear and medial mensicus tear
what is an arcuate sign and what injury is it associated with
avulsion of the proximal fibula at the insertion of the arcuate ligament complex, associated with PCL tear
what are the plain film findings of trauma related osteolysis
widening of physis (salter 1) in kids, most often in distal radius
what is seen in psoriatic arthritis not RA?
periostitis
what type of injury does mallet finger result from
forced hyperflexion hyperflexion-> avulsion of extensor tendon at dorsal DIP
what are the two most common fractures seen in newly weight bearing kids
1)toddlers fracture (spiral oblique or incomplete buckling of cortex), 2)stress fx of the cuboid
what is the arcuate sign on knee plain film
thin avulsion fragment at fibular styloid: represents avulsion of posterolateral corner structures
what is type 1 vs type 2 vs type 3 accessory navicular
type 1: small round ossicle, type 2: accessory forms flat facet with parent navicular, type 3: medially elongated extension of parent navicular
what is the pattern of maturation of bone in myositis ossificans
initially more mature bone peripherally than centrally
what fracture of the femoral head do u see with posterior hip dislocation
fracture of the anterior inferior femoral head
what is panners disease
OCD of the capitellum in kids/subchondral fracture of the capitellum
what are the findings of a lateral compression pelvic fx? is it stable or unstable?
horizontal pubic ramus fractures, sacral impaction fx, stable
what are the findings of a AP compression pelvic fx?
diastasis of the pubic symphysis and SI joints
on what view is a hill sachs imapction fx seen? on what view is reverse hill sachs fx seen? what is the trough sign?
internal rotation, see impaction fx at posterolateral humeral head (it hits the anteroinferior glenoid). reverse hill sachs is seen on axillary view. trough sign is impaction fx at humeral head with posterior dislocation, seen on AP view
what are the findings of turf toe
injury of the plantar plate of the first toe with proximal displacement of the sesamoids
what are the findings on xray of bisphosphonate related fx
subtrochanteric lateral cortical thickening in the hip and lateral beaking of the bone -> transverse pathologic fx
what is a snowboarders fracture in the ankle?
fx of the lateral process of the talus
what is the mgmt for garden 1 and 2 subcapital (nondisplaced) femoral fractures?
knowles pins. type 3 and 4 require hemi or total arhtroplasty
what is a maisonevve fracture?
fx of the medial malleolus or disrupted deltoid ligament, with extension of the force proximally, disruption of the syndesmosis, and fx of the high fibula