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Compression fixation of subtrochanteric fractures.

Compression fixation with a blade plate was used in the treatment of 11 fresh and 9 nonunited subtrochanteric fractures. Fifteen fractures united as fixed. Three settled into varus with eventual union in 2 and a fibrous nonunion with metal failure in one. One fracture became infected and the patient died of metastatic fibrosarcoma and one was lost to accurate long-term follow-up. The average Harris Hip Rating for 18 patients was 84, an average of 24 postoperatively. In each instance, technical errors accounted for suboptimal results. Compression fixation is designed for the subtrochanteric region for either fresh or nonunited fractures.

Adolescent↗

Multiple unstable cervical fractures with cord compromise treated nonoperatively: a case report.

STUDY DESIGN: The case of a 17-year-old boy who sustained an unusual pattern of multiple unstable cervical spine fractures with a spinal cord injury is presented. OBJECTIVE: To review the management and treatment of multiple unstable cervical spine fractures. SUMMARY OF BACKGROUND DATA.: Combined unstable cervical spine injuries are uncommon. Treatment of multiple-level cervical spine fractures remains controversial. METHODS: The case of a 17-year-old boy who sustained a ring fracture of the atlas, an atypical traumatic spondylolisthesis of the axis, bilateral pedicle fractures of C3 with significant anterior subluxation of C3 on C4, a C6 burst fracture, compression fractures of C7 and T1, and significant cord compression as the result of a motor vehicle accident is presented. RESULTS: The patient was successfully treated with an initial closed reduction using cervical traction for 1 week followed by placement of a cervical halo vest. The fractures healed successfully, and the patient regained near-normal neurologic function. CONCLUSIONS: Despite advances in the surgical treatment of cervical fractures and dislocations, nonoperative treatment with halo immobilization remains a viable option for selected complex injury patterns.

Adolescent↗

[Surgical treatment of injuries of the thoracolumbar transition. 1: Epidemiology].

The authors report on a prospective multicenter study with regard to the operative treatment of fractures and dislocations of the thoracolumbar spine. 18 traumatologic centers in Germany and Austria, forming the working group "spine" of the German Society of Trauma Surgery, are participating in this continuing study. Between September 1994 and December 1996 682 patients (64% male) with an average age of 39 1/2 (7-83) years were entered. The entry criteria included all patients with acute and operatively treated (within 3 weeks after trauma) fractures and dislocations of the thoracolumbar spine (Th 10-L 2). Part 1 of this publication outlines the protocol and epidemiologic data. The incidence of fractures and dislocations of the thoracolumbar spine and associated injuries were recorded according to a standardized protocol, as well as the different operative methods and complications, duration of hospital stay, rehabilitation and incapacity. The analysis of the clinical social and radiological course was a second focus. The most frequent mechanism of injury was a fall (50%) or traffic accident (22%). Most of the fractures occurred at the L 1 level (49%). All injuries were classified according to the ASIF (AO) classification. 65% sustained an A-type fracture (compression fracture). Associated injuries were observed in 35% and 6% were polytraumatized. Extremities and thorax were most frequently affected. Younger age and traffic accidents lead more often to C-type fracture (fracture dislocation) and polytrauma. An increased number of multisegmental or multilevel lesions were observed in polytraumatized patients. There were 16% with incomplete paraplegia (Frankel/ASIA B-D) and 5% with complete paraplegia (Frankel/ASIA A). The rate of patients with initial neurologic deficits significantly increased with the severity of spinal injury according to the Magerl classification. Until discharge a neurologic improvement (at least 1 Frankel/ASIA grade) was observed in 32% of the partially paralyzed (Frankel/ASIA B-D) and in 12% of the patients with complete paraplegia (Frankel/ASIA A). A neurologic deterioration occurred in 3 patients (0.4%). As a base for further follow-up and late results the individual starting point was determined by collecting relevant data of the patients' history: 277 (40.6%) patients suffered from simultaneous diseases, one half was spine related. At the time of injury 559 (82.0%) patients were employed; 429 (62.9%) doing manual work. 369 (54.1%) patients stated sportive activities before the injury and 561 (82.3%) designated their "back function" as normal. For the time before injury the patients scored an average of 93.4 points in the Hannover Spine Score (0-100 points concerning complaints and function of the back/spine).

Adolescent↗

[Distal radius fractures and concomitant lesions. Experimental studies concerning the pathomechanism].

Since Colles (1814) first described a distal radius fracture and the publication by Dupuytren (1834), the frequency of and problems surrounding these fractures were increasingly recognised. Not only the treatment but also the formation and type of fracture were repeatedly analysed. The various theories concerning the pathomechanism led to names such as: "tear fracture", "bend fracture", "thrust fracture", "compression fracture", "snap fracture" and others. In our experimental studies we attempted to simulate the pathomechanism of distal radius fractures and present them pictorially. With the help of a materials testing machine, 63 prepared cadaver arms were hyperextended in the wrist joint until a radius fracture occurred. The concomitant lesions were registered radiologically and by dissection. Moreover, additional cadaver arms were deep-frozen and examined by means of computer tomography and cryosection according to Kathrein. Through experimental hyperextension it was possible to generate dorsal, central, and palmar types of fractures. We produced 42 dorsal, 14 central and 7 palmar fractures. Fundamentally, it seems that the fracture depends on the extent in which the carpal bones of the proximal row are pressed against the dorsal, central or palmar part of the articular surface of the distal radius. The subsequent dissection showed in 40 cases (63 %) mostly multiple concomitant lesions and in 23 cases (37 %) none of these. The reason for concomitant lesions may be the proportion of bone stability to the strength of ligaments. Most frequently (27 cases, i.e. 43 %), we found a destabilisation of the articular disk with or without a bony avulsion fragment (fracture of the ulnar styloid). We also commonly found ruptures of the interosseous ligaments between scaphoid and lunate (20 cases, i.e. 32 %) and lunate and triquetrum (11 cases, i.e. 18 %). It is difficult to apply knowledge gained from experimental studies on preserved cadaver arms clinically. There are of course no physiological reflexes and the slow fracture process must be taken into consideration. This holds true not only for concomitant lesions but also for the type of fracture. On the other hand, in these experimental studies it was possible to generate many realistic types of fractures with their concomitant lesions.

Biomechanical Phenomena↗