Data Trace Editor – See: – Sub Talar Dislocation – Subtalar Fusion – Transverse tarsal joint – Triple Arthrodesis – Discussion: – anatomy: – axis of rotation: – axis of subtalar joint is approx 42 deg upward from the horizontal in saggital plane & 16 to 23 deg medial to midline of foot in transverse plane; – upward … Read more
– See: Sub-Talar Joint – Discussion: – involves dislocation of distal articulations of talus at both talocalcaneal & talonavicular joints; – ankle joint is undisturbed; – distinguish between medial and lateral subtalar dislocation; – method of reduction is different w/ each type … Read more
– Discussion: – stress frx of femoral neck are relatively uncommon injuries, with most reports involving military recruits & athletes who are subjected to increased physical demands; – like most stress frx, women are most often affected and it is important to inquire about amenorrhea and occult eating disorders; … Read more
– Midfoot Fatigue Fractures: – fatigue frx are rare in midfoot (of these frx in navicular are most common); – radiographs & bone scan are necessary to make the diagnosis; – treatment involves eliminating athletic activity until healing is complete, which often takes several months; – Metatarsal Stress Frx: … Read more
– Discussion: – stress shielding is the redistribution of load (and consequently stress onthe bone) that occurs when the femoral head is replaced by the femoral component of a total hip replacement; – stress on proximal 10 cm of femoral cortex is reduced, because much of the load bypasses this region and … Read more
– Discussion: – occur as the result of repetitive loading below yeild strength & are most common in lower extremity (metatarsals > calcaneus > tibia); – Matheson, et al.: 370 athletes with stress fractures tibia (49.1%), tarsals (25.3%), metatarsals (8.8%) and bilateral stress fractures in 16.6% of cases; – focal structural … Read more
– Discussion: – to evaluate for Hill Sachs Lesion after dislocations; – Technique: – the patient is supine; – a cassette is placed under the involved shoulder – the palm of the hand of the affected extremity is placed on top of … Read more
– structural bone grafts for hip arthroplasty: – structural bone grafts and cemented prosthesis may be indicated when there is less than 50% of acetabular contact; – as pointed out by Hasegawa et al 1996, when there was more than 67% of acetabular coverage in dysplastic hips, there were no revisions at 13 years; … Read more
Acta Orthop Scand. 1963;33:320-328 Wyller T ABSTRACT Barneft, Napier & Hicks showed that the axis of the ankle joint passes obliquely in relation to the sagittal plane of the foot. This means that the foot moves in the ankle joint like a poorly mounted wheel, it swerves from side to side. … Read more