Background: The congenital muscular torticollis is characterized by a persistent lateral flexion of the head to the affected side and cervical rotation to the opposite side due to unilateral shortening of the sternocleidomastoid muscle. The majority of the cases resolve with conservative management, with parents/caregivers education and physical therapy. The aim of this study was to assess demographic and clinical characteristics, treatment options, and outcome, amongst infants referred to pediatric rehabilitation consultation due to congenital muscular torticollis. Methods: Retrospective cohort study of infants diagnosed with congenital muscular torticollis between January 2012 and December 2014. Obstetric and perinatal data, clinical presentation, comorbidities, treatment, and outcome were abstracted from clinical records. Results: One hundred six infants were included. There was no sex predominance and mean age at first pediatric rehabilitation consultation was 11.6 (10.4) weeks. Most women were primiparous (76.4%), dystocic labor predominated (73.6%), and pelvic fetal presentation occurred in 20.8%. At examination, 49.1% of the infants had abnormalities, beyond the tilt cervical, mainly range of motion restrictions and palpable nodule in sternocleidomastoid muscle. Among the 87 children who performed the cervical ultrasound, 29 (27.4%) had anomalies. Associated clinical conditions such as hip dysplasia were identified. The majority (71.7%) were submitted to conservative treatment, 30.2% in the Pediatric Rehabilitation Department. Most infants (97.2%) showed a complete resolution of the torticollis. Conclusions: Congenital muscular torticollis is the most common cause of torticollis in the infants. Early diagnosis, parent/caregivers education, and conservative treatment are crucial to achieving good results.

Knee joint lesions can be solitary or occur concomitantly with other lower limb abnormalities. Ring-shaped lateral meniscus (RSM) and hypoplasic anterior cruciate ligament (ACL) are two rare malformations. The therapeutic management of such abnormalities is not consensual, and highly depends on clinical symptomatology. We report a case of a 25-year-old girl with progressive knee pain whose MRI demonstrated a continuous segment of lateral meniscus situated along the medial aspect of the lateral compartment, continuous with the otherwise normal-appearing lateral meniscus, compatible with an RSM. This anatomic variant can be mistaken by a displaced meniscal fragment, like a bucket-handle tear, a central tear of a discoid meniscus, or incomplete discoid meniscus, as previously reported. Her MRI examination also showed a thinned ACL with anomalous lateral course. This abnormality may be mistaken for an ACL rupture and/or a meniscofemoral ligament with agenesis of ACL. Multiple images in different planes as well as following the course of meniscal and ligaments are critical clues to avoid misdiagnosis. As a result, the diagnosis of an RSM along with hypoplasic ACL with abnormal attachment was assumed based on MRI and confirmed during arthroscopy. The patient was treated conservatively with clinical outcome improvement.

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