| lateral ligament, ankle | Three ligamentous fasciculi present on the lateral side of the ankle joint considered collectively: pars tibiocalcanea (the calcaneotibial ligament), pars tibiotalaris anterior (the anterior talotibial ligament), pars tibiotalaris posterior (the posterior talotibial ligament). It is a common site of injury. (12 Dec 1998) |
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| acromioclavicular dislocation | <orthopaedics> Disruption of the normal articulation between the acromion process and the clavicle. The acromioclavicular joint (AC joint) is normally stabilised by several ligaments that can be torn in the process of dislocating the AC joint). See: acromioclavicular sprain. (27 Sep 1997) |
| patellar dislocation | <radiology> most common in young girls, (genu valgum, patella alta, quad mm deficiency more in girls), lateral dislocation, spontaneous reduction, recurrent dislocation, fracture associated in 5-10% (12 Dec 1998) |
| perilunar dislocation | Dislocation of carpal bones around the lunate, which remains in relation to the radius; distinguish from dislocation of lunate, Kienbock's dislocation. (05 Mar 2000) |
| perilunate dislocation | <radiology> Lunate remains aligned with radius, capitate dislocates (usually posteriorly), more common than lunate dislocation (radial-lunate ligaments stronger than lunate-capitate ligaments), associated with scaphoid fractures (75%) = transscaphoid perilunate dislocation (12 Dec 1998) |
| chopart fracture-dislocation | <radiology> A fracture-dislocation occuring through the hindfoot-midfoot joint (i.e., tarsonavicular and calcaneocuboid joints) (12 Dec 1998) |
| closed dislocation | A dislocation not complicated by an external wound. Synonym: simple dislocation. (05 Mar 2000) |
| compound dislocation | Synonym: open dislocation. (05 Mar 2000) |
| congenital hip dislocation | A malformation of the hip joint that is present at birth. Genetic factors likely play a role in this disorder. Features include hip dislocation, asymmetry of leg positions, asymmetric fat folds and diminished movement on the affected side. Some children will exhibit little or no features and must be diagnosed by physical examination of the hip joints. (27 Sep 1997) |
| wrist dislocation | <radiology> 10% of all carpal injuries due to fall on outstretched hand, perilunate dislocation (more common), lunate dislocation (12 Dec 1998) |
| hip dislocation | <radiology> Usually posterior, hip flexed, knee hits dashboard during deceleration, superior migration of femoral head, with or without acetabular fracture (12 Dec 1998) |
| hip dislocation, congenital | Congenital dislocation of the hip generally includes subluxation of the femoral head, acetabular dysplasia, and complete dislocation of the femoral head from the true acetabulum. This condition occurs in approximately 1 in 1000 live births and is more common in females than in males. (12 Dec 1998) |
| shoulder dislocation | <radiology> Anterior (subcoracoid), humerus may lead to beneath coracoid process, anterior to glenoid, most frequent site and type of dislocation of any joint, easily detected, repeated dislocation most likely to be Hill-Sachs deformity and/or Bankhart deformity, posterior, 2 - 4% of shoulder dislocations, 50% due to seizures; trauma, electrical shock, often missed on AP view: use Y or axillary view, rim sign in acute dislocation, increased glenohumeral space (normal 6 mm may lead to widened to 14 mm), with or without compression fracture of anterior surface of humeral head, 20% most likely to be associated fracture (12 Dec 1998) |
| simple dislocation | A dislocation not complicated by an external wound. Synonym: simple dislocation. (05 Mar 2000) |
| Nelaton's dislocation | Wedging of the astragalus between the widely separated tibia and fibula, usually complicated with fracture. (05 Mar 2000) |