Orthopedic Imaging: ʻO ka "Terry Thomas Sign" a me Scapholunate Dissociation

ʻIke Radiographic: Ke loaʻa ka scapholunate dissociation a me ka haehae ʻana o ka scapholunate interosseous ligament, ʻo ka ʻike anteroposterior o ka lima a i ʻole ka ʻike coronal ma CT e hōʻike ana i kahi ākea nui ma waena o nā iwi scaphoid a me lunate, e like me kahi ākea niho liʻiliʻi.

ʻIkepili hōʻailona: ʻO ka dissociation ʻo Scapholunate ke ʻano maʻamau o ka paʻa lima lima, ʻike ʻia hoʻi ʻo scaphoid rotary subluxation. ʻO ka mea maʻamau ke kumu o ka hui ʻana o ka hoʻonui ʻana, ka hoʻokaʻawale ʻana o ka ulnar, a me nā ikaika supination i hoʻohana ʻia i ka ʻaoʻao ulnar palmar o ka lima, ka hopena i ka haki ʻana o nā ligaments e hoʻopaʻa i ka pou proximal o ka scaphoid, e alakaʻi ana i ka kaʻawale ʻana ma waena o ka scaphoid a me nā iwi lunate. . Hiki ke haehae ʻia ka ligament collateral radial a me ka ligament radioscaphocapitate.

Hoʻopili pū ʻia nā hana hana hou, ka ʻeha a me ka hoʻololi ʻana, ka laxity ligament congenital, a me nā ʻano like ʻole o ka ulnar me ka scapholunate dissociation.

Nānā Kiʻi: X-ray (me ka hoʻohālikelike bilateral):

1. Scapholunate gap > 2mm mea kānalua no ka dissociation; inā > 5mm, hiki ke ʻike ʻia.

2. Scaphoid cortical apo hōʻailona, ​​me ka mamao ma waena o ka palena lalo o ke apo a me ka proximal ami ili o ka scaphoid he <7mm.