Test on Pediatric Congenital Hand Deformities
Pediatric Congenital Hand Deformities: Analysis for Students
Test: Syndactyly clinical features, Syndactyly surgical management, Other congenital finger anomalies - associated syndromes, Polydactyly, Mirror Hand (Ulnar Dimelia), Brachydactyly, Pediatric hand deformities, Cleft hand: Clinical features & etiology, Cleft hand: Surgical treatment & reconstruction, Other congenital finger anomalies - general hand anomalies, Constriction ring syndrome, Symbrachydactyly, Congenital hand reconstruction - Indications, Congenital hand reconstruction - Toe/Phalangeal Transfers, Congenital hand reconstruction - Surgical Techniques, Other congenital finger anomalies - phalangeal and growth disorders, Other congenital finger anomalies - clinodactyly, Other congenital finger anomalies - distal phalanx deformities, Other congenital finger anomalies - macrodactyly
20 questions
Question 1: Is secondary surgery usually undertaken within 6 months after the initial reconstruction to facilitate early functional recovery?
A. Ano
B. Ne
Explanation: Secondary surgery is typically deferred for at least 18 months to allow for scar maturation, joint motion, and full incorporation of the transfer into use.
Question 2: According to the study materials, what is the primary objective of employing the 'Transposition of Rays' technique in congenital hand reconstruction?
A. To improve the cosmetic appearance of a two-digit hand by creating longer digits.
B. To create prehensile function when the thumb's excursion is insufficient to reach the fingers.
C. To replace missing digits through microvascular transfer of toes from the foot.
D. To distract and lengthen a short digit using an external fixator device.
Explanation: The study materials state under 'Transposition of Rays' that 'This technique involves transposition of rays to allow prehension. In certain hands, the thumb lacks enough excursion to reach the fingers. Transposition of a finger or fingers into a more radial position can allow pinch or grasp.'
Question 3: The primary cause of soft tissue shortening in severe finger angulation is the displacement of the extensor mechanism.
A. Ano
B. Ne
Explanation: Severe angulation leads to soft tissue shortening on the concave side of the digit and possible displacement of the extensor mechanism. The displacement is a possible consequence of severe angulation and soft tissue deformation, not the primary cause of the shortening itself.
Question 4: According to the provided study materials, which classifications accurately describe the outcome of a longitudinal epiphyseal bracket based on its ossification and completeness?
A. When the bracket completely ossifies early, a short, triangular bone known as a 'delta phalanx' is produced.
B. If the bracket is incomplete or cartilaginous, some longitudinal growth occurs, resulting in a trapezoidal phalanx.
C. An incomplete bracket always leads to no longitudinal growth, producing a delta phalanx.
D. A completely ossified bracket allows some longitudinal growth, resulting in a trapezoidal phalanx.
Explanation: The study materials state that when the bracket completely ossifies early, no longitudinal growth is possible and a short, triangular bone, the 'delta phalanx,' is produced. It also states that if the bracket is incomplete or cartilaginous, some longitudinal growth occurs and the phalanx is trapezoidal. Options 2 and 3 describe outcomes that contradict these descriptions.
Question 5: Surgical correction for clinodactyly is indicated when there is severe shortening and angulation, especially if the radial digits or thumb are involved and the deformity interferes with pinch.
A. Ano
B. Ne
Explanation: The study materials state, "Surgical correction is indicated for severe clinodactyly with shortening and angulation, particularly when the radial digits or thumb are involved and angular deformity interferes with pinch."