Case Prep: Craniosynostosis Repair

Case / Approach Snapshot

• Anatomy at risk: age-specific skull/soft tissue, developing brain and tracts, CSF pathways, brainstem/lower cranial nerves, tumor or congenital lesion relationships, and blood-volume constraints.
• Operative steps: adapt positioning/anesthesia to age, confirm imaging and goals with family, expose gently, preserve neurovascular/CSF pathways, reconstruct durably for growth, and plan ICU/endocrine/rehab surveillance; use the detailed operative sequence and approach notes below as the step-by-step source.
• Rescue plans: blood loss, hypothermia, swelling, hydrocephalus, airway/swallowing issues, endocrine/electrolyte shifts, infection, and staged therapy with oncology or rehab teams.
• Figures: review Figures, Imaging & Video and the Curated Image Set; embedded local figures should remain open-access, public-domain, or otherwise reusable with attribution.
• Papers: review High-Yield Literature for seminal sources, modern reviews, and outcome data specific to this page.

One-Liner

[Age — months] [M/F] infant with [sagittal / metopic / unicoronal / bicoronal / lambdoid] craniosynostosis [± syndromic] planned for [endoscopic strip craniectomy + helmet / open cranial vault remodeling].

Figures, Imaging & Video

🎥 Operative video — search operative video on YouTube ▸ · The Neurosurgical Atlas ▸

Neurosurgical Atlas · Radiopaedia · PubMed Central — operative figures © linked; see media-sources.md

High-Yield Literature

• Craniosynostosis - Recognition, clinical characteristics, and treatment — Kajdic N. Bosnian journal of basic medical sciences 2018. PubMed
• The clinical manifestations, molecular mechanisms and treatment of craniosynostosis — Stanton E. Disease models & mechanisms 2022. PubMed
• Craniosynostosis — Governale LS. Pediatric neurology 2015. PubMed
• Syndromic Craniosynostosis — Sawh-Martinez R. Clinics in plastic surgery 2019. PubMed
• Nonsyndromic Craniosynostosis — Dempsey RF. Clinics in plastic surgery 2019. PubMed
• Craniosynostosis — Kabbani H. American family physician 2004. PubMed
• Craniosynostosis: A Pediatric Neurologist’s Perspective — Shruthi NM. Journal of pediatric neurosciences 2022. PubMed
• FGFR Craniosynostosis Syndromes Overview — Adam MP. 1993. PubMed
• Imaging in craniosynostosis: when and what? — Massimi L. Child’s nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery 2019. PubMed
• Craniosynostosis and oculomotor disorders — Dalmas F. Neuro-Chirurgie 2020. PubMed

Curated Image Set

Open-access figures are embedded from PubMed Central articles and kept unique to this guide.

Figure 1. Source: Craniosynostosis in Patients With X‐Linked Hypophosphatemia: A Review — JBMR Plus. 2023 Mar 14;7(5):e10728. doi: 10.1002/jbm4.10728; CC BY.

Fig. 2. Age distribution of craniosynostosis diagnosis in patients with XLH identified in this review. Note, the age of craniosynostosis diagnosis was not reported for all patients; this… Source: Craniosynostosis in Patients With X‐Linked Hypophosphatemia: A Review — JBMR Plus 2023; CC BY.

Fig. 3. (A) Distribution of fused sutures and (B) distribution of symptoms/complications in craniosynostosis in patients with XLH identified in this review. Note, the sutures fused were not… Source: Craniosynostosis in Patients With X‐Linked Hypophosphatemia: A Review — JBMR Plus 2023; CC BY.

Figure 1. Age distribution of the syndromic craniosynostosis, non-syndromic craniosynostosis, and control groups. Source: Ocular biometric features of pediatric patients with fibroblast growth factor receptor-related syndromic craniosynostosis — Scientific Reports 2021; CC BY.

Figure 2. Comparison of biometric values between the syndromic craniosynostosis, non-syndromic craniosynostosis, and control groups. The distribution of (A) spherical equivalent, (B) axial length,… Source: Ocular biometric features of pediatric patients with fibroblast growth factor receptor-related syndromic craniosynostosis — Scientific Reports 2021; CC BY.

Figure 1. Prevalence of strabismus preoperatively and postoperatively in sagittal, unicoronal and metopic non-syndromic craniosynostosis. Source: Ophthalmological findings in children with non-syndromic craniosynostosis: preoperatively and postoperatively up to 12 months after surgery — BMJ Open Ophthalmology 2021; CC BY.

Figure 8. Source: Ophthalmological findings in children with non-syndromic craniosynostosis: preoperatively and postoperatively up to 12 months after surgery — BMJ Open Ophthalmol. 2021 Apr 25;6(1):e000677. doi: 10.1136/bmjophth-2020-000677; CC BY.

Figure 9. Source: Ophthalmological findings in children with non-syndromic craniosynostosis: preoperatively and postoperatively up to 12 months after surgery — BMJ Open Ophthalmol. 2021 Apr 25;6(1):e000677. doi: 10.1136/bmjophth-2020-000677; CC BY.

Fig. 1.. Cranial sutures and craniosynostosis in humans. (A) A normal human infant skull shown from above (left) and human infant skull shown from the side (right). (B) Skull deformities caused… Source: The clinical manifestations, molecular mechanisms and treatment of craniosynostosis — Disease Models & Mechanisms 2022; CC BY.

History of Present Illness

• Chief complaint: Abnormal head shape since birth, ridging over suture, ± raised ICP (multisuture/syndromic)
• Suture and head shape:
  • Sagittal → scaphocephaly (long, narrow) — most common
  • Metopic → trigonocephaly (triangular forehead, hypotelorism)
  • Unicoronal → anterior plagiocephaly (forehead flattening, harlequin orbit)
  • Bicoronal → brachycephaly (often syndromic)
  • Lambdoid → posterior plagiocephaly (rare; distinguish from positional)
• Syndromic (Apert, Crouzon, Pfeiffer, Saethre-Chotzen, Muenke) — multisuture, raised ICP, midface
• Developmental milestones, signs of raised ICP

Past Medical History

• Syndromic features (limbs, midface, airway — Apert/Crouzon), genetics
• Airway issues (syndromic), feeding, OSA
• Birth/developmental history

Imaging Review

CT head with 3D reconstruction

• Confirm fused suture(s), head shape, exclude other sutures, ventricles, Chiari (lambdoid/syndromic), raised ICP signs (copper-beaten skull)

  MRI (selective)

• Chiari, hydrocephalus, brain anomalies (syndromic)

  Ophthalmology

• Papilledema (raised ICP)

Labs

• CBC, type and CROSSMATCH (blood loss can be significant in infants), coagulation
• Pre-op anesthesia/age-appropriate

Examination

• Head shape/circumference, suture ridging, fontanelle, neurological/developmental, eyes, syndromic features

Surgical Planning

Case Logistics, OR Needs & Orders

• OR setup: pediatric anesthesia, blood conservation/cell saver per protocol, craniofacial/plastics trays, positioning pads, temperature management, tranexamic acid/blood products, and helmet pathway for endoscopic cases.
• Special needs: weight-based antibiotics/fluids/transfusion thresholds, arterial line for open vault cases, eye protection, hypothermia prevention, and family counseling about swelling and helmet therapy.
• Immediate postop orders: PICU neuro and airway checks, CBC/coags, drain care if used, pain/nausea regimen, head elevation, transfusion parameters, wound checks, and helmet/craniofacial follow-up.

Procedure Selection

• Endoscopic strip craniectomy: age < 3-6 months (younger = better — relies on rapid brain growth + postoperative molding helmet); minimal blood loss, short stay; for single-suture (esp. sagittal)
• Open cranial vault remodeling (CVR) / fronto-orbital advancement (FOA): older infants (typically 6-12 months), syndromic, multisuture, significant deformity; FOA for coronal/metopic (forehead/orbit); more blood loss, longer surgery
• Spring-assisted / distraction (select centers)

Position

• Endoscopic sagittal: prone or modified prone/sphinx; Open: supine (FOA) or prone (posterior); careful infant positioning/padding/thermoregulation

Key Surgical Steps

• Endoscopic strip craniectomy (sagittal): small incision(s), subgaleal/subperiosteal dissection, endoscopic dissection of the epidural plane, remove the fused suture strip (± lateral barrel-stave osteotomies/wedges), control sagittal sinus/bleeding, closure; helmet therapy starts ~1-2 weeks post-op for months
• Open CVR/FOA: bicoronal incision, scalp flap, craniotomies to remove and remodel bone, fronto-orbital bar advancement (FOA), reshape and refix vault with resorbable plates/sutures, expand the constricted dimension; meticulous hemostasis (blood loss)

Critical Anatomy & Structures at Risk

1. Superior sagittal sinus (sagittal/under the strip) — major bleeding risk in a small infant
2. Dura (tears, especially syndromic/older), bridging veins
3. Orbit/globe, supraorbital nerves (FOA), frontal lobes
4. Blood volume — infants have small total blood volume; significant relative blood loss

Equipment

• Endoscope + endoscopic craniectomy set OR open craniotomy/remodeling set
• Resorbable fixation plates/sutures, high-speed drill/craniotome
• Crossmatched blood (have in room), cell saver, tranexamic acid, hemostatic agents
• Molding helmet plan (endoscopic), thermoregulation

Monitoring

• Arterial line (open/blood loss), invasive monitoring; precordial Doppler (VAE — sinus exposure)

Anesthesia

• Arterial line, large-bore IV/central access, crossmatched blood ready, TXA, careful infant fluid/thermoregulation, VAE precautions (sagittal sinus), blood loss vigilance

Potential Complications

1. Hemorrhage / blood loss (transfusion usually needed in open; lower in endoscopic)
2. Venous air embolism (sinus exposure)
3. Dural tear/CSF leak, sagittal sinus injury
4. Under/over-correction, need for revision, raised ICP persistence (syndromic)
5. Infection, hardware issues, helmet compliance (endoscopic)

Operative Note Template

Preoperative Diagnosis: [Sagittal/metopic/unicoronal/bicoronal] craniosynostosis [± syndromic]

Postoperative Diagnosis: Same

Procedure: [Endoscopic-assisted strip craniectomy for sagittal synostosis / Open cranial vault remodeling with fronto-orbital advancement]

Surgeon / Assistant: Neurosurgery + craniofacial/plastics Anesthesia: General endotracheal EBL / Fluids / Blood products: [crossmatched in room; TXA; cell saver] Adjuncts: [Endoscope] / craniotome, resorbable fixation; arterial line; VAE precautions (precordial Doppler) Implants: Resorbable plates/sutures Complications: None

Indications: [Age — months] infant with [suture] synostosis ([head-shape]); [endoscopic strip chosen given age < 3–6 months with planned helmet / open CVR-FOA given older age/deformity]. Risks (blood loss/transfusion, VAE, dural tear) discussed.

Description of Procedure: After consent and time-out, general anesthesia was induced with arterial access, crossmatched blood in the room, and TXA; VAE precautions were observed. [Endoscopic: a small incision, subgaleal/epidural endoscopic dissection, and removal of the fused sagittal suture strip (± barrel-stave wedges) with sagittal-sinus/bleeding control.] [Open: a bicoronal incision and scalp flap, craniotomies to remove and remodel the vault with fronto-orbital bar advancement, reshaping and refixing with resorbable plates.] Meticulous hemostasis was maintained given the infant blood volume.

Closure was performed. The patient was transferred to the [PICU/floor] with Hgb/transfusion monitoring; [helmet therapy was planned ~1–2 weeks post-op for the endoscopic case].

Postoperative Plan

• PICU (open/blood loss) or floor (endoscopic), neuro checks, monitor Hgb/transfusion needs
• Facial/periorbital swelling (FOA — eyes may swell shut, reassure), head dressing
• Helmet therapy ~1-2 weeks post-op (endoscopic) for several months; helmet/orthotist referral
• Pain control, feeding, thermoregulation
• Craniofacial team follow-up, genetics (syndromic), ophthalmology, head shape/circumference surveillance
• Long-term: monitor for raised ICP, reossification, need for revision (syndromic)

Chief-Level Case Review

Use these as the senior-level mental model for Craniosynostosis Repair:

• Decision point: The setup is age-specific: blood volume, warming, positioning pressure, airway, latex risk, family counseling, and ICU/PICU handoff differ from adults.
• Technical lever: Preserve future options: growth, shunt dependence, cranioplasty/bone healing, endocrine/neurocognitive trajectory, and adjuvant therapy influence today’s choices.
• Bailout: Have a complication script: blood loss, CSF leak, hydrocephalus, wound breakdown, posterior fossa mutism, infection, and airway/swallow risk should be anticipated.
• Postop watch: Postop communication matters: family expectations, neurologic baseline, therapy needs, school/developmental supports, and surveillance imaging/labs should be clear.

Common Pimp Questions

Use these to pressure-test preparation for Craniosynostosis Repair:

1. What age-specific anatomy, blood volume, temperature, and positioning issue changes the plan?
2. What is the neurologic, developmental, or syndromic baseline?
3. What skin, wound, CSF, or infection risk is highest in this child?
4. What family-facing expectation should be clarified before surgery?
5. What postop bed, feeding, pain, imaging, and activity plan is safest?

Attending Preference Variables

Items that commonly vary by surgeon or institution:

• Blood availability threshold, warming strategy, antibiotic dosing, and Foley/drain use: [attending-specific]
• Positioning aids, pinning versus horseshoe, and skin-prep preference: [attending-specific]
• Family update cadence and expected ICU/floor disposition: [attending-specific]
• Postop feeding, pain regimen, wound care, and activity restrictions: [attending-specific]