Ortho Oracle - orthopaedic operative atlas

Scaphoid Nonunion

    – See: Avascular Necrosis of the Scaphoid – Discussion: – often result from undiagnosed or undertreated non displaced scaphoid fractures, especially when associated w/ carpal instability; – even when found as late as 6 mo after the injury, frx of scaphoid, esp at the waist and distal location, may go on to heal; … Read more

Scapholunate Advanced Collapse (SLAC)

– Discussion:     – scapholunate advanced collapse (SLAC) refers to a specific pattern of osteoarthritis and subluxation which results from untreated chronic scapholunate dissociation or from chronic scaphoid non-union;     – degenerative changes occur most often in areas of abnormal loading;            – radial-scaphoid joint is involved initially, followed by … Read more

Scaphoid / Scaphoid Fracture

       – Work Up for Scaphoid Fracture: (w/ discussion)   – clinical differential diagnosis: – distal radius frx – transscaphoid perilunate dislocation: – scaphoid impaction syndrome – radiographs and determination of stability (CT scan) – non diagnostic radiograph  (bone scan) – tubercle frx – transverse waist frx – proximal pole frx – treatment: … Read more

Scalenus Posterior

origin: posterior tubercles of transverse processes of 4th, 5th, and 6th cervicals; insertion: lateral superior surfaces of 2nd rib behind attachment of Serratus Anterior; action: acting unilaterally, flexes and rotates cervical vertebrae; when acting bilaterally, flexes the neck and raises 2nd rib; nerve supply: posterior branches of   C5 ,   C6 , C7,   … Read more

Scaphoid Frx: Non Diagnositic X-ray

– See: Non-Displaced Scaphoid Frx – Discussion:     – in up to 25% of cases, initial ER radiographs will fail to demonstrate a frx; – Management Options:     – immobilization and repeat radiographs:            – w/ positive exam findings and negative radiographs, immobilize wrist in a thumb-spica cast for … Read more

Scalenus Anterior

     origin: anterior tubercles of the transverse process of the 2nd to 6th cervical vertebrae;  insertion: scalene tubercles on anterior superior surface of the 1st rib;  action:      – acting unilaterally, flexes and rotates cervicals and raises first rib;      – when acting bilaterally, flexes the neck;  nerve supply: anterior branches, C5, … Read more

Scalenus medius

    origin: posterior tubercles of the transverse process of 2nd to 7th cervical vertebrae; insertion: superior surface of the 1st rib behind subclavian groove; action: acting unilaterally, flexes and rotates cervical vertebrae; raises first rib; when acting bilaterally, flexes the neck; nerve supply: posterior branches of anterior primary rami of C3, C4; lateral muscular … Read more

Sarcoidosis

– Clinical Manifestations:     – may have fevers, rash, & iritis, which can resemble symptoms of JRA.     – pulmonary dz, erythema nodosum, abdominal pain, liver enlargement, and perihilar adenopathy may also be present.     – labs: elevated ACE serum level is considered to be the activity marker of the disease     – … Read more