The Hip book

Unilateral Bar

– Discussion:      – unilateral bar is a common disorder and is likely to progress;      – it is caused by failure of segmentation of posterior elements of two or more vertebrae on one side;      – this anomaly carries a predictable poor prognosis & therefore a patient w/ this anomaly should … Read more

Unilateral Facet Dislocation

– See:        – Facet Joint Injuries        – Hyperflexion Injuries        – Oblique projections;        – Pillar View – Discussion:     – simple unilateral facet dislocation is often a stable injury, eventhough there is disruption of the posterior ligament complex (involved             joint capsule, posterior longitudinal ligament, … Read more

Ulnar Wrist Pain

– Discussion: – distal radioulnar subluxation/dislocation  (see TFC Injury) – tear of the lunotriquetral – ulnocarpal impingement syndromes – pisotriquetral osteoarthritis – pisotriquetral loose bodies – subluxation/dislocation of the pisiform – fractures (ulnar styloid Process) – chondromalacia – calcific tendinitis – medial carpal instability – radioulnar arthritis – subluxation of the ECU The ulnar impaction … Read more

Ultimate Tensile Strength

– See: biomechanics menu: – Discussion:     – maximum load that metal can withstand in a single application without breaking;     – w/ application of a load, maximum stress will be achieved;          – this is ultimate tensile strength, & is maximum stress material can sustain before fracturing;     … Read more

Ulnar Styloid Process Frx

– Anatomy:      – Tunnel V:           – overlies distal ends of radioulnar articulation on dorsum of wrist, contains EDM;     – Tunnel VI:           – in groove between the apex of ulnar styloid process & ulnar head, contains ECU tendon which is palpable from … Read more

Ulnar Translocation

– Discussion:     – most frequent radiocarpal instability;     – the lunate is translocated ulnarly, and therefore is not supported by the radius;     – ulnar translationn is also commonly seen in disease such as RA or in Madelung’s deformity;             – in RA, may occur along … Read more

Types of Spondylolisthesis

 Type                       Age                          Pathology / Other   Congenital              Child            Congenital dysplasia of S1 superior facet   Isthmic           … Read more

Ulna / Ulnar Shaft Fracture

div class=”mh-row clearfix”> h1>/h1> div class=”bodycopy”>hr size=”3″/> br/> a href=”/image4/ulna1.jpg”>img src=”/image4/ulna1a.jpg” alt=””/>/a> a href=”/image4/ulna2.jpg”>img src=”/image4/ulna2a.jpg” alt=””/>/a> a href=”/image4/ulna3.jpg”>img src=”/image4/ulna3a.jpg” alt=””/>/a>br/> br/> – See:br/>       – a href=”/bones/radius-ulna/adult-both-bone-forearm-frx/”>Both Bone Forearm Fracture:/a> / a href=”/orthopaedics/ulnar-styloid-process-frx/”>Ulnar Styloid/a> Processbr/> br/> strong>- Anatomy:/strong>br/>      – radius & ulna lie parallel to each other when forearm is supinated;br/>   … Read more

Types of Anterior Dislocation

– See: Multidirectional Instability:  – Radiographic Subtypes:     – Subcoracoid          – most common type of anterior dislocation          – head of humerus is displaced anteriorly w/ respect to glenoid, & is inferior to coracoid process;          – greater tuberosity is fixed on anterior glenoid rim;          – neck … Read more

Types of Orthopaedic Infections

– Orthopaedic Infection Menu     – bacterial menu     – infectious tenosynovitis     – diabetic foot infections     – hand infections     – THR infections     – TKR Infections     – septic arthritis     – necrotizing soft tissue infections:     – osteomyelitis (Cierney Classification)     – spinal infection / osteomyelitis … Read more