Elbow
Liposarcoma
– See: Soft Tissue Menu – Two Forms: – low grade myxoid liposarcoma; – most common; – occurs in young adults; – in myxoid liposarcoma, lipoblasts are dispersed in anastomosing capillary framework; – fine reticular vascular pattern; … Read more
Limb Development
– See: – Anatomy of the Physis – Deformities – Enchondral Ossification – Longitudinal Growth: – Pediatric Bone Circulation – Salter Harris – Discussion: – at about the 4th week of development, paired upper and … Read more
Ligamentous Injuries in Tibial Plateau Frxs
– See: Tibial Plateau Frx Menu, Rim Fractures – Ligaments: – 60% of plateau frx will have ligamentous instability; – MCL accounted for 55%, LCL injuries for 22%, & combined cruciate & collateral injuries for 23% of lesions. – these may have poor prognosis; – Exam: – w/ isolated … Read more
Lateral View of Wrist
– Discussion: – view should demonstrate the metacarpals, lunate and radius aligned – hand will appear slightly palmar flexed; – w/ proper technique, the volar pisiform will lie between the distal aspect of scaphoid and the palmar aspect of the head of the capitate; – Specific Point of Evaluation: … Read more
Latissimus Dorsi
– origin: broad aponeurosis that originates on the spinous processesof the lower 6 thoracic and all lumbar vertebrae; posterior crest of ilium, posterior surface of sacrum, lower 3 or 4 ribs, and an attachment of the tip of the scapula; – insertion: flat tendon that twists upon itself to insert into the intertubercular groove of … Read more
Lateral Cord
– Discussion: – arises from anterior division of upper (C5, C6) & middle trunks (C7); – lateral pectoral nerve – musculocutaneous nerve – lateral root of the median nerve : (FCR & pronator teres) and (sensory fibers to the median nerve) – lateral cord branches … 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 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