– See: – TKR Menu – Distal Femoral Resection – Femoral IM Alignment Rod – Distal Femoral Sizing Guide (and Rotational Alignment) – Anterior, Posterior, and Chamfer Cuts – Femoral Component Notching – Design Considerations: – PCL Retaining Prosthesis – Posterior Stabilized Prosthesis – left & … Read more
– Theoretical Considerations: – distance from posterior reesction plane to anterior resection plane must equal the internal dimension of femoral component being used; – this cut must be made at a distance from the anterior cut equal to inner anterior-posterior dimension of femoral component used; … Read more
– See: TKR Menu – Distal Femoral Resection – Distal Femoral Sizing Guide (and Rotational Alignment) – Anterior, Posterior, and Chamfer Cuts – Location of Entry Hole: – ideally the starting point is slightly medial and posterior to the center of the notch; – generally the drill needs to be inserted 1 … Read more
– Definition: – see instability following TKR – is space between the posterior coronal cut on the distal femur & transverse cut on proximal tibia, while knee is in flexion; – effect of resection of PCL (see posterior stabilized prosthesis); – in report by Kadoya, et al, effect of PCL resection … Read more
– Discussion: – if there is free movement at hip, subtalar & mid-tarsal joints rotation at the knee is not essential for restricted function of prosthetic joint; – in contrast, an arthrodesed ipsilateral hip is a relative contra indication to knee replacement, for it prevents rotation of thigh as … Read more
Discussion when the innervated ligamentous layer of the outer annulus fibrosis is stretched because of segmental instability, pain results; acute sprain probably represents partial tearing of annular tissue; if annular tissue becomes weakened to the point of allowing nucleus to protrude beyond the normal confines of the annulus, it may actually be a prelude to … Read more
Discussion main causes of toe walking are idiopathic toe walking and cerebral palsy history may include continuous toe walking vs normal gait followed by delayed toe walking by age 2 yrs; idiopathic toe walking is often caused by a congenitally short heelcord or an overactive calf muscle; heel cord lengthening may be an option after … Read more
– Discussion: – w/ foot in full supination, ankle is submitted to plantar flexion force; – most often causes a SH type II frx (less often SH I) of distal tibia; – fibular fracture may or may not be present; – Radiograph: – on lateral x-ray look for … Read more
– TKR Menu: AP cutting guide – Determine Appropriate AP Component Size: – most instrument systems incorporate cutting block that is placed on end of femur & rotated to appropriate orientation; – prior to inserting the AP sizing guide, remove any prominent meniscal remnants so that the posterior “fins” of the … Read more