J Korean Orthop Assoc.  2007 Feb;42(1):32-37. 10.4055/jkoa.2007.42.1.32.

Corrective Dome Osteotomy for Cubitus Varus and Valgus Deformity

• Hahn SB
• Lee DH
• Kim SH
• Kang HJ

• KMID: 2106372
• DOI: http://doi.org/10.4055/jkoa.2007.42.1.32

Abstract

Purpose: To examine the clinical results of a corrective dome osteotomy for a cubitus varus and valgus deformity.
Materials and Methods
Between January 1998 and April 2005, nineteen patients with a cubitus varus or valgus deformity were treated with a corrective dome osteotomy. The mean age of the patients was 29.5 years and the mean follow-up period was 39 months (range, 15 to 95 months). A dome osteotomy was performed along the circle centered approximately 1 cm distally from the olecrenon tip. Internal fixation was performed with multiple K-wires or plates.
Results
Bony union was achieved in 18 cases. In the cubitus varus group, the carrying angle was corrected from a mean varus of 17.9o to a mean valgus of 5.9o. The lateral prominence angle (LPI) was corrected from a mean of 15.6% to a mean of -7.6%. In the cubitus valgus group, the carrying angle was corrected from a mean valgus of 36o to 6.7o. The LPI was corrected from a mean -31% to -1.3%. On the functional assessment, 12, 5 and 2 cases showed excellent, good and fair outcomes, respectively.
Conclusion
Corrective dome osteotomy for a cubitus varus or valgus deformity is an excellent cosmetic procedure through which a correctional angle can be achieved easily without shortening the humeral length.

Keyword

Varus or valgus deformity; Corrective dome osteotomy

MeSH Terms

Congenital Abnormalities*
Follow-Up Studies
Humans
Osteotomy*

Figure

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  Fig. 1 The lateral prominence index (LPI) was calculated using the dollowing formula: (AB-BC)/AC×100, where B is the crosslink between a line connecting the lateral prominence, A, the medial prominence, C, and the longitudinal mid-humeral axis.

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  Fig. 2 Dome osteotomy was performed along the circle with a radius of approximately 3 cm centered about 1 cm distally from the olecrenon tip. The black circle indicates the center of rotation.

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  Fig. 3 A dome shaped humerus was noted after the osteotomy with a K-wire and osteotome.

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  Fig. 4 (A) A 9-year old male had a cubitus varus deformity (carrying angle: varus 13°). (B) Dome osteotomy and fixation with K-wires were performed. (C) The carrying angle was corrected to valgus 5°.

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  Fig. 5 (A) A 16-year old male had cubitus varus deformity (carrying angle: varus 19°). (B) The cubitus varus deformity was corrected to valgus 8° after the dome osteotomy.

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