What is the Primary pathology in Congenital displacement of hip :
Correct Answer: Shallow acetabulum
Description: Pathological changes observed in CDH : 1.Bone- *acetabulum shows primary acetabular dysplasia and acetabulum is shallow.In addition there could be a gap or groove at posterosuperior aspect,triangular outer surface of ilium and acetabulum are in same line ,above acetabulum there is a depression containing the head of femur. Head of femur: head of femur normal initially ,later head is flat on its posterior and medial aspect,femoral head in the ilium is buffer or conical shaped. *Neck of femur:shoening and ante version *pelvis: tilted forwards,small and atrophied ,lordosis present &is more veical than normal. *Capsule: show hourglass constriction, one containing head and other containing acetabulum,constriction is produced by iliopsoas,ligamentum trees passes through this constriction,& it is hyperophied. 2.muscles : * pelvifemoral group -adductors ,saorius,gracious,rectus femoris,hamstrings,tensor fascia lata muscles.these muscles are shoened and they prevent reduction of head. *pelvitrochanteric group (obturators,quadratus femoris,iliopsoas) These are elongated & psoas forms an obstacle to reduction. *glutei muscles -show little organic change but power is diminished. REF:Textbook of ohopedics,John Ebenezer,4th edition pg no.494
Category:
Orthopaedics
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now