Ortho Oracle - orthopaedic operative atlas

Natural History of AVN

 Co-authored by Edward Harvey M.D. – Discussion:     – symptomatic hip almost uniformly progresses to further collapse without treatment;     – collapse rates approach greater than 85% in the symptomatic hips, even if first seen in the earliest stages;      – treatment plan for the asymptomatic AVN is controversial;     – approx … Read more

Multiple Cartilaginous Exostoses (Hereditary Exostosis)

– See: Bone Tumor Menu – Discussion:     – an osteochondroma that results from a dysplasia of peripheral growth plate;            – as its name implies, multiple hereditary exostosis is an inherited condition which produces multiple exostoses;     – occurs in 1 out of 50,000 people;     – … Read more

MRI in Cervical Fractures

– See:   – MRI Spine: Discussion;   – Role of CT in C-spine Injuries: – Discussion:     – for visualizing soft tissue and neural elements, & unsuspected disc herniations in presence of cercial spine fractures;     – disc herniation may indicate disruption of anterior or posterior longitudinal ligament;          – MRI … Read more

MRI of AVN of Femoral Head

– See:      – MRI of Hip:      – Johns Hopkins – MRI Evaluation of AVN – Discussion:     – magnetic resonance imaging is probably the most accurate imaging modality for dx of AVN of femoral head;     – MRI imaging is also used to outline the area of involvement;   … Read more

Mosaicplasty and Cartilage Transplants for Chondral Injuries of the Knee

– Mosaicplasty: – refers to the technique of harvesting small circular (4-8 mm) autogenous grafts from the knee from non wt bearing regions of the knee, and transplanting the grafts in a mosaic pattern until the osteochondral defect is filled; – typically the grafts are harvested from the periphery of the supero-lateral trochlea, but often, the … Read more

MP Joint Locking

– Discussion:     – index finger is most commonly involved, often found in older pts w/degenerative arthritis; – Etiology:     – muscular contracture or trauma;     – collateral ligament or volar plate tethering on prominent MP head or osteophyte (on either side or volar aspect of metacarpal head);     – torn palmar … Read more

Monteggia Fractures in Children

– See: Monteggia Fractures in Adults – Discussion: – all four types of Monteggia frx dislocation are pertinent to children, including Monteggia equivalents; – diff dx: Monteggia equivalent (w/ fracture of proximal radius rather than dislocation of the radial head); – Classification: – type I: – anterior dislocation of the radial head w/ apex anterior … Read more

Mobilization of Rotator Cuff for Repair

– Discussion: (RTC menu)     – mobilization is often required for massive tear;     – simply closing extensive tear will not suffice if atrophied muscles are not contracting adequately and if excessive tensions placed on repaired cuff cause reinjury;     – repair of good quality rotator cuff tissue is esp important in achieving an optimal result; … Read more