Data Trace Editor note that active plantarflexion may occur due to activity of tibialis posterior, peroneals, and long toe flexors; diagnosis is clinched w/ one of two tests; hyper-dorsiflexion sign the patient is placed in the prone position, and the knees are flexed to 90 deg; the examiner then passively dorsiflexes both feet maximally and compares the injured … Read more
(see also: Achilles Tendonitis) Discussion ruptures typically occur after age 30, more often in people beyond middle age; rupture at musculous tendinous junction occurs most often in young people, but ruptures near the calcaneus also occur; inciting event may be related to atrophy of the soleus muscle, and commonly occur in weekend athletes; in 5-33% … Read more
P(A-a)O2 = PAO2 – PaO2; PaO2, PaCO2: Calculated from ABG: PAO2 = (712 x FIO2) – (PaCO2/0.8); or (712-pCO2)-pO2 Normal P(A-a)O2 = 12 mm Hg in the young Adult to 20 mm Hg at age 70 yo; In pure Ventilatory Failure the P(A-a)O2 will remain 12 to 20 mm Hg; in … Read more
– Normal Hip Development: (limb development and pediatric anteversion); – at 4 to 6 gestational weeks, the hip joint develops from the cartilaginous anlage; – by 7 weeks a cleft develops between precartilagenous cells which are programmed to form the femoral head and acetabulum; – by 11 weeks, the hip … Read more
Foot Ankle Int. 1994 Nov;15(11):581-584 Frey C, Halikus NM, Vu-Rose T, Ebramzadeh E ABSTRACT BACKGROUND: The purpose of this study was to review 15 years of experience with ankle fusions, specifically addressing the underlying etiology of ankle pathology, incidence of nonunion, and associated predisposing conditions that can lead to nonunion. METHODS: … Read more
Foot Ankle Int. 1997 Apr;18(4):247-248 Donatto KC no abstract available Copyright © 1997 (Foot Ankle Int. Apr;18(4):247-248) by the American Orthopaedic Foot and Ankle Society, Inc., originally published in Foot & Ankle International, and reproduced here with permission.
Foot Ankle Int. 1994 Jun;15(6):297-300 Dohm MP, Benjamin JB, Harrison J, Szivek JA ABSTRACT BACKGROUND: A biomechanical study was undertaken to evaluate the relative stability of three types of internal fixation used for ankle arthrodesis. METHODS: Crossed screw fixation, RAF fibular strut fixation, and T-plate fixation were tested in 30 cadaver ankles using … Read more
Foot Ankle Int. 1997 Oct;18(10):639-643 Berend ME, Glisson RR, Nunley JA ABSTRACT BACKGROUND: This study compared the mechanical bending and torsional properties of intramedullary nail fixation and lag screw fixation for tibiotalocalcaneal arthrodesis. METHODS: Seven matched pairs of human cadaver lower extremities were studied, with one hindfoot in each pair stabilized with a … Read more
Foot Ankle Int. 1994 Jun;15(6):301-305 Friedman RL, Glisson RR, Nunley JA 2nd ABSTRACT BACKGROUND: Two commonly used techniques for tibiotalar fusion were quantitatively compared using instrumented testing of the strength of the construct. METHODS: The tibiae and tali from 10 pairs of fresh-frozen cadaveric limbs were used. One joint of each … Read more