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[Traumatic hip injuries in the growth stage].

Injuries to the hip joint during growth are rare, but can nevertheless be problematic. Many of the complications described in the literature can be avoided by immediate, low-stress, but adequate therapy. With such an approach, however, fateful complications such as head necrosis cannot be avoided with absolute certainty. Therefore, management of such injuries must include correct enlightenment of the patient's parents and systematic follow-up of the patient, in order to identify complications which might have a negative influence on the prognosis and to treat them at an early stage.

Acetabulum

[Diagnosis and treatment of postoperative infections following hip injuries].

The authors studied the diagnosis and treatment of posttraumatic infections of the hip joint, based on their own material. In case of latent infection the increased sedimentation rate and taking of comparative X-ray films are held important, that shows a narrowing and disappearance of the sclerosed edge of the acetabulum. Following dislocation of the hip joint ankylosis may be attained, but after fractures of the proximal and of the femur the infection cannot be cured, unless the nail and the head of the femur are removed.

Adult

Biomechanical aspects of pelvic and hip injuries in road traffic accidents.

The mechanism of pelvic fractures has been well documented from radiographs but little is known of the forces required to produce these injuries. We examined 40 cases of pelvic injury sustained in road traffic accidents where the direction of impact and the velocity differential was known. In frontal impacts, indirect shear injuries of the pelvis were prominent, while in side impacts, lateral compressive injuries occurred. With increasing velocity differentials and vehicle deformation and intrusion, more severe pelvic injury occurred, often in association with significant head, chest, and lower limb injuries. Side impacts were noted to produce more severe injuries at lower velocity differentials when compared with frontal crashes.

Accidents, Traffic

Injuries to hip joint in car occupants.

Four varieties of fracture, of dislocation, or of fracture dislocation of the hip are described that occur in car occupants after road accidents. It is suggested that, whereas most hip injuries to car occupants are produced by application of force to the knee, one important variety (central fracture dislocation) is the result of the direct application of force to the great trochanter. Central fracture dislocations might be prevented, or their severity minimized, by strengthening the sides of cars and of car doors and by improving the energy absorption characteristics of the facia panel.

Accidents, Traffic

Lower extremity flexibility patterns in classical ballet dancers and their correlation to lateral hip and knee injuries.

Knee and hip problems account for up to 40% of injuries in classical ballet. Despite apparent flexibility, many dancers appeared to have tight iliotibial bands that contributed to lower limb problems. Thirty senior female ballet dancers were contrasted with thirty age-matched active volunteers for hip and knee range of motion, and the information derived was correlated with their orthopaedic medical histories. Dancers spent a reasonable period of time warming up, but it was usually with an unbalanced routine that emphasized hip abduction and external rotation to the exclusion of adduction work. This was reflected in the significantly lower range of passive hip adduction and internal rotation compared to the controls. Furthermore, the older and more experienced the dancer, the more this trend was exaggerated. This unbalanced flexibility may play a role in the production of lateral knee pain (30% of the dancers) and anterior hip pain (33% of the dancers). It is suggested that more attention should be given to a balanced stretching regimen as part of the dancers' warmup in an effort to reduce the frequency of some of the chronic hip and knee complaints.

Adolescent