Imaging Orthopedic: The "Terry Thomas Sign" ndi Scapholunate Dissociation

Mawonekedwe a Radiographic: Pakakhala scapholunate dissociation ndi kung'ambika kwa scapholunate interosseous ligament, mawonedwe a anteroposterior a dzanja kapena mawonedwe a coronal pa CT amasonyeza kusiyana kwakukulu pakati pa mafupa a scaphoid ndi a mwezi, mofanana ndi kusiyana kwa dzino.

Kusanthula kwa Zizindikiro: Kusokonezeka kwa Scapholunate ndi mtundu wofala kwambiri wa kusakhazikika kwa dzanja, komwe kumadziwikanso kuti scaphoid rotary subluxation. Zimayamba chifukwa cha kuphatikizika kwa kufalikira, kupatuka kwa ulnar, ndi mphamvu zowongolera zomwe zimagwiritsidwa ntchito ku mbali ya palmar ya dzanja, zomwe zimapangitsa kuti mitsempha ya mitsempha ikhazikike yomwe imakhazikika pamtunda wa scaphoid, zomwe zimapangitsa kupatukana pakati pa scaphoid ndi mafupa a mwezi. . Mitsempha ya radial collateral ligament ndi radioscaphocapitate ligament ingathenso kung'ambika.

Zochita zobwerezabwereza, kuvulala kogwira ndi kuzungulira, congenital ligament laxity, ndi kusiyana kolakwika kwa ulnar kumagwirizanitsidwanso ndi scapholunate dissociation.

Kuyeza Kujambula: X-ray (ndi kufananitsa kwa mayiko awiri):

1. Mpata wa Scapholunate> 2mm ndi wokayikitsa chifukwa cha kudzipatula; ngati > 5mm, akhoza kuzindikiridwa.

2. Chizindikiro cha mphete cha scaphoid cortical, ndi mtunda pakati pa malire apansi a mphete ndi malo ozungulira olowa pansi pa scaphoid kukhala <7mm.