Congenital Muscular Torticollis Flashcards
What is Congenital Muscular Torticollis (CMT), and what is its hallmark feature?
Congenital Muscular Torticollis (CMT), also called ‘wry neck’ or ‘twisted neck,’ is characterized by unilateral shortening of the sternocleidomastoid (SCM) muscle, causing lateral flexion (head tilt) to the same side and rotation to the opposite side.
What are the three main classifications of cranial deformation associated with CMT?
- Plagiocephaly: Flattening on one side of the skull, causing ear and facial asymmetry.
- Brachycephaly: Symmetrical flattening at the back of the head.
- Dolichocephaly/Scaphocephaly: Elongated skull, often seen in preterm infants.
What are common associated conditions with CMT?
Associated conditions include deformational plagiocephaly, facial asymmetry, scoliosis, brachial plexus injury, congenital hip dysplasia, and foot deformities.
What are the potential prenatal causes of CMT?
Prenatal causes include intrauterine positioning and ischemic injury leading to compartment syndrome.
List potential perinatal and postnatal factors contributing to CMT.
Perinatal factors: Breech presentation, forceps or vacuum-assisted delivery, and birth trauma.
Postnatal factors: Positional preference, plagiocephaly, and reflux.
What grading system is used to assess the severity of CMT?
The APTA Clinical Practice Guideline (2018) grades severity from 1-8 based on age at recognition, age at PT evaluation, degree of cervical ROM limitations, and presence of an SCM mass.
Differentiate between left and right torticollis in terms of head tilt and rotation.
Left torticollis: Right head rotation and left lateral flexion.
Right torticollis: Left head rotation and right lateral flexion.
What is plagiocephaly, and what percentage of infants with CMT also have this condition?
Plagiocephaly is a cranial deformation caused by mechanical forces leading to asymmetry of the skull. Approximately 90% of infants with CMT also have plagiocephaly.
What are the differential diagnoses for CMT?
Differential diagnoses include atlantoaxial rotary instability, hemivertebrae, cervical subluxation, posterior fossa tumors, cerebral palsy (CP), Chiari malformation, ocular/vestibular anomalies, and GI disorders.
What is the prevalence of CMT in newborns?
The prevalence of CMT in newborns ranges from 0.3% to 16%.
What is the typical clinical finding on the SCM in CMT?
A palpable mass or fibrotic pseudotumor may be found on the SCM.
What is the role of the Argenta’s clinical classification system in CMT?
Argenta’s clinical classification is used to evaluate the severity of plagiocephaly by assessing craniofacial asymmetry and skull deformation.
How does CMT affect muscle function beyond the SCM?
Other muscles involved in CMT include the scalenes, levator scapulae, and upper trapezius, which may contribute to additional asymmetry.
What is the significance of birth trauma in the development of CMT?
Birth trauma, such as from forceps or vacuum-assisted delivery, can cause damage to the SCM or lead to positional constraints, increasing the risk of CMT.
What GI disorder is associated with postnatal factors contributing to CMT?
Reflux is a postnatal factor that can influence positioning and contribute to CMT development.
What is the typical head posture observed in CMT?
In CMT, the head is laterally flexed (tilted) to the side of the affected SCM and rotated to the opposite side.
What are the common craniofacial asymmetries associated with CMT?
Craniofacial asymmetries include facial flattening, ear asymmetry, and mandibular deviation due to mechanical forces on the skull.
What are the key postures to assess during a physical therapy examination for CMT?
Key postures include supine, prone, sitting, and standing to evaluate head positioning, weight bearing, and symmetry.
What are the seven body functions and structures recommended for examination in CMT by the 2018 CPG?
- Infant posture in multiple positions.
- Bilateral active cervical rotation, lateral flexion, and diagonal movements.
- PROM/AROM of extremities.
- Screening for hip dysplasia.
- Bilateral passive cervical rotation and lateral flexion.
- Pain using the FLACC scale.
- Integumentary evaluation.
How is the FLACC scale used in the examination of CMT?
The FLACC scale evaluates pain in infants based on five criteria: Face, Legs, Activity, Cry, and Consolability, providing a score from 0 to 10.
What postural asymmetries might be observed in a supine infant with CMT?
Supine asymmetries include a resting head position tilted to one side, limited hands-to-midline movements, and ATNR (asymmetric tonic neck reflex).
What are the key developmental milestones to assess in CMT?
Key milestones include tolerance of prone positioning, rolling, pull-to-sit, sitting, crawling, and symmetrical weight-bearing in standing.