Spherical talus

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Classification according to ICD-10
Q66.8 Other congenital deformities of the feet
ICD-10 online (WHO version 2019)

The spherical talus , English congenital ball-and-socket ankle joint , is a very rare congenital malformation of the upper ankle joint with a dome-like deformation of the talus and a curved shape of the articular surface of the tibia .

distribution

It is a very rare malformation, an association with a tarsal coalition , other foot malformations or shortened legs ( hemimelia ) are not uncommon.

root cause

If there are other malformations in the ankle joint, in particular a tarsal coalition, the abnormal configuration of the upper ankle joint is to be regarded as an adaptation phenomenon. Otherwise the cause and the mechanism of development are unclear.

Other authors take the view that the spherical shape is always the result of a malformation.

Children with meningomyelocele can develop an acquired form of globular talus.

Clinical manifestations

The spherical talus changes the joint mechanics from the hinge to the ball- and- socket joint , does not cause any symptoms, but supination trauma can occur more often .

Diagnosis

Diagnostic criteria in the X-ray are:

  • missing tabular, slightly concave trochlea tali (talus roll)
  • convex, arched-rounded trochlea
  • Atypical configuration of the ankle joint fork adapted to the shape of the trochlea.

therapy

No causal therapy is known. Join significant pain mostly due to osteoarthritis on, possibly, an arthrodesis in question come.

history

This rare malformation was described as early as 1931 and 1933. Douglas Lamb wrote the first report in the English-speaking area in 1958.

literature

  • JS Lewis, JK DeOrio: The adult ball-and-socket ankle joint: surgical management of late ankle and subtalar arthritis. In: Foot & ankle specialist. Vol. 8, No. 2, April 2015, pp. 112-118, doi: 10.1177 / 1938640014548321 , PMID 25205679 .
  • PM Stevens, S. Aoki, P. Olson: ball-and-socket ankle. In: Journal of pediatric orthopedics. Vol. 26, No. 4, 2006 Jul-Aug, pp. 427-431, doi: 10.1097 / 01.bpo.0000217713.80233.c5 , PMID 16791056 .
  • D. Bettin, A. Karbowski, L. Schwering: Congenital ball-and-socket anomaly of the ankle. In: Journal of pediatric orthopedics. Vol. 16, No. 4, 1996 Jul-Aug, pp. 492-496, PMID 8784704 .
  • M. Steingard, E. Percy: The ball-and-socket ankle: a case history and literature review. In: Foot & ankle international. Vol. 16, No. 5, May 1995, pp. 302-305, PMID 7633589 (Review).
  • Y. Takakura, S. Tamai, K. Masuhara: Genesis of the ball-and-socket ankle. In: The Journal of bone and joint surgery. British volume. Vol. 68, No. 5, November 1986, pp. 834-837, PMID 3782257 .

Individual evidence

  1. ↑ a b c d e F. Hefti: Pediatric orthopedics in practice. Springer 1998, ISBN 3-540-61480-X , p. 415
  2. ↑ K. Hiroshima, Y. Kurata, M. Nakamura, K. Ono: Ball-and-socket ankle joint: anatomical and kinematic analysis of the hindfoot. In: Journal of pediatric orthopedics. Vol. 4, No. 5, September 1984, pp. 564-568, PMID 6490876 .
  3. ↑ J. Hamel, G. Müller, W. Becker: A case of bilateral isolated talonavicular synostosis in childhood - observations on the mechanics of the tarsus and the functional adaptation of the ankle joint. In: Journal for orthopedics and their border areas. Vol. 131, No. 3, 1993 May Jun, pp. 275-278, doi: 10.1055 / s-2008-1040240 , PMID 8342315 .
  4. ^ Y. Takakura, Y. Tanaka, T. Kumai, K. Sugimoto: Development of the ball-and-socket ankle as assessed by radiography and arthrography. A long-term follow-up report. In: The Journal of bone and joint surgery. British volume. Volume 81, Number 6, November 1999, pp. 1001-1004, PMID 10615975 .
  5. ^ A b F. Pistoia, MB Ozonoff, P. Wintz: Ball-and-socket ankle joint. In: Skeletal radiology. Volume 16, Number 6, 1987, pp. 447-451, PMID 3659990 .
  6. ↑ G. Politzer: About deformities of the hand and foot skeleton and about their formal genesis. In: RoeFo : Advances in the field of X-rays. Vol. 43, 1931, pp. 605-619
  7. ↑ EL Kewesch: About hereditary fusion of the carpal and tarsal bones. In: RoeFo : Advances in the field of X-rays. Vol. 50, 1933, pp. 550-556
  8. ↑ D. LAMB: The ball and socket ankle joint; a congenital abnormality. In: The Journal of bone and joint surgery. British volume. Vol. 40-B, No. 2, May 1958, pp. 240-243, PMID 13539107 .