Lateral Oblique Axial View
– Discussion: – demonstrates the posterior subtalar facet; – foot is passively everted, dorsiflexed and externally rotated 60 deg; – central beam centered 1 inch below tip of medial malleolus with 10 deg cephalic tilt
Tibia and Fibula
Lateral Meniscus
– See: – Discoid Meniscus:: – Types of Meniscal Tears; – Discussion: – in shape medial meniscus resembles a C, whereas lateral meniscus is more sharply curved and resembles an O that is unclosed medially; – lateral meniscus is much more of closed circle in uniform width from anterior to posterior; – it has … Read more
Hallux Valgus: Lateral Soft Tissue Release and Capsular Repair
– See: Hallux Valgus Arthroplasty Menu: – Technique: – begins thru a short dorsal incision in 1st web space, which is made in midline in order to avoid superficial branches of deep peroneal nerve which passes on each side; – if incision is made to proximally, it … Read more
Lateral Compartment
– See: – Anterior Compartment – Superficial Poserior Compartment – Deep Posterior Compartment – Anatomy: – lateral compartment contains only 2 muscles, peroneus brevis, & longus, which serve primarily as plantarflexors and evertors of foot; – superficial peroneal nerve runs in … Read more
Lateral Compartment Disease: Varus Osteotomy
– See: Distal Femoral Osteotomy – Discussion: – usually involves a medial closing wedge osteotomy of the distal femur (supracondylar region) fixed with a blade plate; – femoral osteotomy is sometimes reserved for valgus deformities of > 12 deg and > 10 deviation of the knee joint from horizontal; … Read more
Lateral Compartment of the Knee
– Discussion: – tripled layered arrangement on the lateral aspect of knee; – posterolateral part of capsule is divided into two laminae that encompass LCL, fabellofibullar, & arcuate ligaments; – Layer I – superficial Layer (Layer I): 2 parts; – iliotibial tract (and its expansion anteriorly) … Read more
Lateral Circumflex Femoral Artery
– Discussion: – usually arises from lateral side of deep femoral artery; – in 15% of pts, it arises from femoral artery above profunda; – LFCA passes laterally in front of Psoas & between branches of Femoral Nerve; – passes deep to Sartorius & rectus femoris, and … Read more
Lateral Collateral Ligament
– See: – Lateral Compartment of the Knee: – Frx of Proximal Fibula: – Varus Stress Testing: – Discussion: – lateral collateral ligament is primary restraint to varus angulation; – LCL also acts to resist Internal Rotation forces; – cutting of LCL in … Read more
Lateral Antebrachial Cutaneous Nerve
– Discussion: – it is a continuation of musculocutaneous nerve originating from C5 – C8 nerve roots and lateral cord of brachial plexus; – be aware of the frequent anatomic variation as it crosses the elbow; – becomes superficial at anterolateral aspect of elbow between biceps and brachialis muscle; … Read more
Lateral Approach to the Elbow: (Kaplan)
– See: Kocher Approach to Elbow: – Discussion: – allows exposure of lateral column (for condylar frx), capitellum, and radial head, – it can also be used for Monteggia frx as well as for exposure for PIN decompression; – lateral approach is not optimal for complex … Read more