Osteochondral lesion of the talus (OLT) may cause significant pain and mechanical symptoms in the involved ankle. The talar articular surface is enclosed within the osseous structures of the ankle…
The primary indication for a proximal closing wedge osteotomy is a symptomatic hallux valgus deformity with a first intermetatarsal angle (IMA) of 14 degrees or greater. The first metatarsocuneiform (MC)…
The distal chevron osteotomy has proven to be a reliable, reproducible method of bunion repair for mild to moderate deformity. By altering the location and displacement of the osteotomy, the…
Correction of major bunion deformities through the proximal portion of the first metatarsal is widely recognized as the established method of reducing the angle between the first and second metatarsal.3–6…
The primary indication for a chevron osteotomy is symptomatic hallux valgus deformity with a moderate deformity with an intermetatarsal angle of less than 15 degrees. The first metatarsocuneiform joint should…
■ Static structures include the bony architecture of the joints and the ligaments. This bony configuration contributes about 30% of the stability, whereas the remaining 70% of stability comes from the…
Fig. 6.1 Normal frontal (a) and lateral (b) lumbosacral spine radiographs Fig. 6.2 Normal anatomy in the AP projection demonstrated at L3: Superior articular facet (S), inferior articular facet (I),…
Fig. 17.1 Incision Insert a Weitlaner retractor and mobilize the incision medially until it is positioned over the narrow bony coccyx. The coccyx now acts as a rigid “backstop” for…
Fig. 19.1 Slip angle is a value that determines the severity of spondylolisthesis and is higher than 50° in spondyloptosis. It is measured between the perpendicular to a line along…
Fig. 1.1 Sagittal view on computed tomography (CT) showing a pars defect of L5 Etiology In the late 1800s and early 1900s, there were multiple studies attempting to identify the…
