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Table 1: Classification of mirror hand-multiple hand spectrum (Al-Qattan MM et al). |
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Type |
Name |
Clinical features |
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1 |
Ulnar dimelia |
Multiple fingers with two ulna: |
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Type A: each ulna es well formed |
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Type B: the preaxial ulna lacks the styloid process or is hypoplastic |
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2 |
Intermediate type |
Multiple fingers with two ulna (one of the ulna is vestigial) and a radius |
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3 |
Intermediate type |
Multiple finger with one ulna and a radius: |
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Type A: radius well-formed |
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Type B: hypoplastic radius |
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4 |
Mirror hand syndrome |
Bilateral multiple fingers in complex syndactyly |
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Type A: Sandrow syndrome = the forearm contains two ulna |
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Type B: Martin syndrome = the forearm contains an ulna and a radius |
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5 |
Multiple hand |
Complete duplication of the hand including the thumb with a normal forearm |