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Congenital Pseudoarthrosis


Presentation

Physician
  • […] pseudarthrosis of the clavicle causing thoracic outet syndrome is reported. [4] In patients with congenital pseudoarthrosis of the clavicle, a painless mass over the right clavicle is the most common finding that prompts parents to seek consultation with a physician[emedicine.medscape.com]
Swelling
  • A 7-month-old child with a clavicular swelling since birth. Diagnosis: congenital pseudarthrosis of the clavicle. Eur J Pediatr. 1999 Dec. 158(12):1001-2. [Medline]. Ettl V, Wild A, Krauspe R, Raab P.[emedicine.medscape.com]
Cerebral Palsy
  • Palsy and Developmental Medicine, American Academy of Orthopaedic Surgeons, American Orthopaedic Association, American Orthopaedic Foot and Ankle Society, American Society for Reconstructive Microsurgery, American Society for Surgery of the Hand, Clinical[emedicine.medscape.com]
Pain
  • Both problems can be treated by means of open reduction, resection of the pseudoarthrosis, and bone grafting. [8] Resection alone produces pain. Pathophysiology The clavicle is the first bone to undergo membranous ossification.[emedicine.medscape.com]
Fracture
  • The clavicle hook plate for Neer type II lateral clavicle fractures. J Orthop Trauma. 2009 Sep. 23(8):570-4. [Medline]. Beslikas TA, Dadoukis DJ, Gigis IP, Nenopoulos SP, Christoforides JE. Congenital pseudarthrosis of the clavicle: a case report.[emedicine.medscape.com]
Suggestibility
  • The two portions of the clavicle produced are connected by a fibrous bridge that is contiguous with the periosteum, and a synovial membrane develops. [6] The predominance of right-side involvement in the absence of situs inversus suggests that the vascular[emedicine.medscape.com]

Treatment

  • Congenital clavicular pseudarthrosis: comparison of two treatment methods. J Child Orthop. 2011 Feb. 5(1):1-4. [Medline]. [Full Text].[emedicine.medscape.com]

Prognosis

  • Involvement of the left side usually occurs with dextrocardia and situs inversus. [13] Bilateral cases can occur but are rare and are typically associated with genetic syndromes. [14, 15] Prognosis The outcome is usually excellent, with prompt healing[emedicine.medscape.com]

Etiology

  • Etiology The etiology is unknown, and no relation to neurofibromatosis has been demonstrated. Abnormalities in aortic arch angiogenesis have been postulated, which would explain, in part, the right-side distribution.[emedicine.medscape.com]

Epidemiology

  • Epidemiology Congenital pseudoarthrosis is rare. Fewer than 200 cases have been reported in the English literature. The exact incidence and prevalence are unknown. The abnormality occurs almost entirely on the right side.[emedicine.medscape.com]
Sex distribution
Age distribution

Pathophysiology

  • Pathophysiology The clavicle is the first bone to undergo membranous ossification. It connects the sternum to the acromion and provides support for shoulder function.[emedicine.medscape.com]

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