– See: Posterior Cruciate Ligament: – Discussion: – unlike the ACL, the PCL does have a capacity to heal; – references: – Chronically injured posterior cruciate ligament: Magnetic resonance imaging. – Magnetic resonance imaging of posterior cruciate ligament injuries: assessment of healing. – The natural history of … Read more
– See: – Classification and Column Theory – Posterior Wall Fractures – AO Foundation Posterior Column Frx – Discussion: – posterior column extends from obturator foramen thru posterior aspect of the wt bearing dome of acetabulum & then obliquely through greater sciatic notch; – frx of … Read more
– Discussion: – Anatomy and Function of PCL: – mechanism of injury: – fall on a flexed knee with plantar flexed ankle; – associated injuries: – ACL and collateral ligament injury (knee dislocation); – when PCL injury occurs w/ MCL … Read more
– Discussion: (see TKR menu) – posterior capsular ligament has three parts; (see posterior oblique ligament) – one overlies each femoral condyle and a third, shorter section passes between them; – these three parts normally limit extension provided that the depths of the prosthetic surfaces and the cement are … Read more
– See: Posterior Approach for Pelvic Frx – Indications for Use: – isolated posterior wall & posterior column frxs; – allows access to posterior column and posterior wall only, but exposure is limited proximally by superior gluteal vessels and greater trochanter; – isolated transverse frx (as well … Read more
– Discussion: – evaluation of the painful hip replacement and exam for THR loosening: – heterotopic ossification: – post op AP & lateral x-rays should include entire length of stem & cement mass; – femur and cement column are inspected carefully and compared w/ previous films for changes indicating component loosening, stem … Read more
– See: – Associated Transverse and Posterior Wall Frx – Classification and Column Theory – Discussion: – most common type of acetabular frx (up to 50% of acetabular fractures will contain a posterior wall fragment); – posterior wall frxs involve the posterior articular surfaces, often w/ retroacetabular … Read more
– Assess ISS: – w/ multiple injuries (Pelvic Frx) consider supine position and use of universal femoral distractor; – Rotational Alignment – 45 deg Lateral on Flouro Table: – indications: – include ipsilateral femoral and acetabular frx or vertical unstable pelvic fracture; … Read more
– See: differential diagnosis of posterior fossa masses – Discussion: – popliteal artery is the continuation of superficial femoral artery at hiatus of the adductor magnus muscle; – artery is anchored proximally by tendinous insertion of adductor magnus upon the medial femoral epicondyle; – it runs posterior to the distal … Read more
– Anatomy: – origin: – lateral condyle & posterior horn of lateral meniscus fibular head; – popliteus muscle has 3 origins, strongest of which is from lateral femoral condyle, just anterior and inferior to the LCL origin; … Read more