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At least 19 recordsLinked to original sources

[The ulnar nerve compression syndrome].

The ulnar nerve has to bear a large amount of compression, especially in the cubital tunnel, which can be deducted from the topographic relation of this nerve to the elbow. Apart from tightness of the tunnel, intraarticular changes can also cause compression of the nerve. A further narrow tunnel in the course of the ulnar nerve is the "loge de GUYON", situated in the hypothenar region. A careful neurological examination of sensory and motor signs as well as an accurate electromyographical examination differentiate compression syndromes from other neuropathies. Two unusual cases of a functional cubital tunnel syndrome are demonstrated: their cause was primarily a chondromatosis of the elbow joint in one case a functional vasal compression in the other case.

Elbow↗

[Functional mechanisms of the proximal ulnar nerve compression syndrome].

The proximal ulnar compression syndrome when it is not a result of trauma, tumors, inflammatory and degenerative processes, inborn deformations or external pressure, is caused by two mechansims, namely the pinching of the ulnar nerve between the proximal edge of the ligamentous and muscular coverings of the cubital tunnel and of the exit of the nerve from the tunnel under the tendinous arch of the flexor carpi ulnaris. The compression itself is dependent upon the possibility of subluxation of the ulnar nerve. Therapy should consists not only in "decompression", but also in a simultaneous anterior transposition of the ulnar nerve.

Elbow↗

[Vascular causes of median and ulnar nerve compression syndromes].

From a group of more than 200 patients with median and ulnar nerve compression syndrome three cases of interest are demonstrated in detail. In these cases vascular complications led to acurate events accompanied by grave symptoms. In order to prevent irreversible damage surgical treatment of such cases is indicated as soon as possible.

Adult↗

Proximal ulnar nerve compression. Cubital tunnel syndrome.

Ulnar nerve compression about the elbow is common. If diagnosed and treated early, satisfactory results can be expected. Severe chronic nerve compression may lead to permanent nerve damage. The diagnosis can be made by careful history, physical examination, knowledge of the nerve anatomy, and sometimes electrodiagnosis. Cubital tunnel syndrome must be differentiated from TOS and ulnar tunnel syndrome. Double-crush syndrome should be ruled out. Nonoperative treatment must be attempted first, whereas surgical treatment is indicated in severe and chronic cases. Satisfactory results can be achieved after surgery if nerve damage is absent and careful attention to technical details and gentle handling of the nerve are exercised.

Biomechanical Phenomena↗

[Post-traumatic painful ulnar nerve compression syndrome treated by wrapping the nerve with the vein: preliminary report].

Three cases of post-traumatic painful ulnar nerve compression syndrome are presented. Previous treatment both conservative and surgical (neurolysis) proved unsatisfactory. The method described-wrapping of the nerve with the saphenous vein graft in the area of scarification-gave satisfactory outcome in 2 of 3 operated patients (significant resolution of pain and improvement of sensation) in one year follow-up. In one patient surgery failed. The method presented might be considered in refractory cases of painful nerve compression syndrome due to its entrapment within scarred tissue after injury or previous surgery.

Arm Injuries↗

Medial epicondylectomy for ulnar nerve compression syndrome at the elbow.

Nineteen patients were evaluated 6--17 months after medial epicondylectomy (22 extremities) for ulnar nerve compression syndrome at the elbow. Medial epicondylectomy removes the prominence against which the ulnar nerve can be traumatically compressed and no operative handling of the nerve is necessary. Pre- and postoperative nerve conduction velocities were combined with subjective and objective evaluations of all patients. Statically significant correlations were found between the result and the postoperative nerve conduction velocity and the result and the per cent change of nerve conduction velocity. Ten extremities were classified as good results (48%), 4 as fair results (17%), and 8 as poor results (35%). Four limbs in the poor category and one limb in the fair category had electrical evidence of proximal compression neuropathy which compromised the end result. Exclusion of the patients with evidence of proximal neuropathy would yield 76% good or fair results. Measurement of ulnar nerve lengths in fresh cadavers demonstrated that ulnar nerve conduction velocity studies should be performed at 70 degrees of elbow flexion if accurate pre- and postoperative velocities are to be obtained.

Adult↗

[Heterotopic ossification and ulnar nerve compression syndrome of the elbow. A report of two cases].

Heterotopic ossification is a well known complication in patients after longterm coma following CNS trauma. The association of heterotopic ossification and a nerve compression syndrome situated near the calcifications is less common. The authors present 2 CNS traumatised patients who secondarily developed the association of heterotopic ossification of the elbow with a compressive syndrome of the ulnar nerve. Although heterotopic ossification does not appear to be the direct cause of the nerve compression, it certainly promotes compression it because of the flexion it causes.

Adolescent↗

[Proximal ulnar nerve compression syndrome with special reference to the m. epitrochleo-anconaeus].

Subluxation and luxation of the ulnar nerve are normally congenital and can result in not only an irritation of the nerve but also sensory loss and motor weakness. The structures overlying the ulnar groove are responsible for the extent of nerve dislocation. In the case of subluxation, the ulnar nerve is compressed near the medial epicondyle by the edge of the ligamentous or muscular roof of the ulnar groove. In the case of luxation, ulnar nerve compression is located more distally under the aponeurotic arch of the M. flexor carpi ulnaris. We, therefore, distinguish between a proximal and a distal mechanism of nerve compression. In the years from 1970 to 1984 216 ulnar nerve compression syndromes in the elbow area have been treated and 208 cases have been evaluated. The authors found 77 proximal mechanisms (37%) and 54 distal mechanisms (26%). In 43 cases the proximal pressure was due to the ligamentum epitrochleo-anconaeum (20.7%) and in 34 cases to the epitrochleo-anconeal muscle.

Elbow Joint↗

Acute ulnar nerve compression syndrome in a powerlifter with triceps tendon rupture--a case report.

We report on the case of a bodybuilder and powerlifter who suffered from triceps tendon rupture complicated by acute ulnar nerve compression syndrome. The diagnosis was made clinically, radiologically, and sonographically. Ultrasound was helpful to demonstrate a large hematoma at the site of the injury. Early surgical intervention confirmed the presence of the hematoma compressing the ulnar nerve and led to a complete restoration of ulnar nerve and triceps muscle function. Few reports on distal triceps rupture have been published but its complication by acute ulnar nerve compression has not been reported on yet despite the close anatomical relationship of both structures.

Adult↗

[The etiology of ulnar nerve compression syndrome].

A retrospective investigation of the etiology of 132 patients with peripheral ulnar nerve compression was performed. Mainly there was external long-term pressure or compressive lesions near the nerve and disturbances of the osseous structures at the elbow and the wrist.

Female↗

Unusual complication of an opposition tendon transfer at the wrist: ulnar nerve compression syndrome.

Restoration of thumb opposition by tendon transfer may be necessary in cases of severe thenar atrophy caused by long-standing carpal tunnel syndrome. Routing the extensor indicis proprius transfer subcutaneously around the ulna to reanimate thumb opposition is an accepted procedure and is considered safe. Ulnar nerve compression leading to palsy is possible, however, as shown in the patient presented. Neurolysis failed to improve the palsy. Rerouting of the transfer deep to the ulnar nerve was necessary to treat the iatrogenic condition. Possible nerve compression should be kept in mind when planning a tendon transfer around the ulnar side of the forearm or carpus and when following up with the patient. Early intervention is necessary to prevent permanent sequelae.

Adult↗

[Distal ulnar nerve compression syndrome. Intra-operative pressure measurement and surgical procedure].

Four cases of different distal ulnar nerve lesions are presented. Compared with the median nerve in the carpal tunnel syndrome (CTS), the surgical procedure with the distal ulnar nerve has to be determined more by the location of the nerve lesion. Because of the small number of cases and the different types of lesion, pressure on the nerve in the "Loge de Guyon" cannot yet (in contrast to the CTS) be defined by intraoperative pressure recording. An extreme pressure elevation with active movements by the patient might point to a nerve entrapment syndrome. Compared with phalen's test in the carpal tunnel syndrome, and because of its low specificity abduction of digit 5 as a sensitive sign of sensory disturbances in the "Loge de Guyon" is unreliable.

Aged↗

[Chronic ulnar nerve compression syndrome at the elbow. Apropos of 74 cases].

Seventy-four patients were operated at Bichat hospital for chronic ulnar nerve entrapment at the elbow between 1982 and 1988. For 62 of them, the etiology of the compression was idiopathic and these cases were treated by neurolysis only or, if the nerve was unstable, by neurolysis associated with medial epicondylectomy. For 12 of them, the etiology of the compression was post-traumatic and these cases were treated by anterior subcutaneous transposition of the nerve using a fat sling. The average follow-up is 28 months and the results take into account the clinical preoperative grading according Mac Gowan's classification: grade I subjective symptoms combined with hypoesthesia in ulnar fingers grade II: weakness and wasting of the interossei combined with subjective symptoms, grade III: marked weakness and wasting of the interossei, adductor pollicis, and hypothenar muscles combined with anesthesia in ulnar fingers. The 62 idiopathic compressions treated by neurolysis only or, if the nerve was unstable, by neurolysis associated with medial epicondylectomy showed 51 very good and good results. The 12 post-traumatic compressions treated by anterior subcutaneous transposition of the nerve using a fat sling showed 9 very good and good results. The authors stress the importance of their approach which takes account of the clinical preoperative grading and the etiology of the compression in order to apply correct surgical treatment.

Elbow↗

[Ulnar nerve compression syndrome of the elbow. Analysis of 50 operated cases].

This is a retrospective review of 50 elbows (44 patients) treated operatively by simple decompression (seven cases), decompression with epitrochlectomy (13 cases), and anterior transposition (30 cases) for compression neuropathy of the ulnar nerve at the elbow. We performed a superficial transposition in five cases, an intramuscular transposition in 13 cases, and a deep submuscular transposition in 12 cases. The mean follow-up was three years and two months. The overall results show cure or improvement in 78% of cases, no changes in 20% of cases, and one case with subjective worsening. The postoperative result was inversely proportional to the initial degree of the neuropathy. The cases related to trauma obtained a better result.

Adolescent↗