Trigonocephaly

Metopic craniosynostosis

Trigonocephaly happens when the metopic suture fuses before birth, leading to a pointed or triangular-shaped face

About trigonocephaly

When a baby is born, the bone plates in their skull aren't joined together. As they get older, natural seams called sutures help to gradually fuse these plates together. Sometimes, the metopic suture (running from the top of the skull to the top of the nose) fuses before birth. This is condition is called trigonocephaly.

Need to know

  • Symptoms of trigonocephaly icon plus

    The main sign of trigonocephaly in children is a pointed or triangular-shaped forehead. A bony ridge might also develop over the metopic suture and their eyes may seem closer to each other than usual. Some children may also have developmental delay. This is when a child younger than school age takes longer to reach certain physical, emotional, learning and social milestones. Children with developmental delay often catch up to other children over time or with support from occupational therapist, speech therapist and other specialists.
  • Diagnosis icon plus

    As children with trigonocephaly often have pointed or triangular-shaped foreheads, further tests to diagnose the condition may not be necessary. Your HCA Healthcare UK consultant may recommend other tests — like CT or MRI scans — to monitor your child's cranial development over time.
  • Potential treatment options icon plus

    If your baby's trigonocephaly is spotted at birth or in their early years, your HCA UK GP or consultant may recommend skull-reshaping surgery. If your child is diagnosed later with one or more developmental delays, we can support them. We offer a range of neurological, speech therapy, occupational therapy and sensory integration programmes, which can be tailored to your child's needs.

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This content is intended for general information only and does not replace the need for personal advice from a qualified health professional.
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