18 Questions
What is the main cause of muscle contractures in cerebral palsy (CP)?
Spasticity leading to abnormal muscle tone
Why do spastic muscles not grow normally in CP?
Resistance to increases in length
What is the primary cause of skeletal deformity in year 1?
Malleable bone due to spasticity
What effect can contractures have on bone growth in individuals with CP?
Prevent normal bone remodeling
What happens to bone growth in year 2 compared to year 1?
Year 2 bone growth is less than year 1
What is the impact of parallel forces on epiphyseal growth in individuals with CP?
Inhibit growth
In coxa valga, what is the impact on the hip abductor moment arm?
Decreases
Why does abnormal bone growth occur in cerebral palsy (CP) according to the text?
Contractures leading to skeletal deformities
How does the mechanical lever system work in maintaining knee extension in individuals with CP?
By ensuring rigid foot and stiff ankle
What is the consequence of not maintaining pelvic obliquity in single-leg stance with coxa valga?
Trendelenburg sign
Which of the following best describes the impact of coxa breva?
Requires surgical correction
What is the purpose of Trochanteric transfer in correcting coxa valga?
Restore femoral neck-shaft angle
What is a common cause of torsional deformities in cerebral palsy (CP)?
Excessive femoral anteversion
In malrotated lever arms, external tibial rotation causes the ground reaction force (GRF) to move in which direction?
Posteriorly & laterally
What secondary moments are introduced when external tibial rotation is present?
Eversion & external rotation
How does external tibial rotation impact the knee extensor moment?
Reduces the lever arm
Which of the following may occur due to unwanted moments caused by abnormal bone growth?
Pes valgus
What surgical intervention is typically required for correcting torsional deformities?
Ilizarov frame application
Test your knowledge on bone growth and skeletal deformities with this quiz. Learn about the progression from malleable to ossified bone, causes of skeletal deformities, and examples of lever arm dysfunction. Source: www.hss.edu
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
