Avtor/Urednik		Bošnjak, R
Naslov		Sila izometrične kontrakcije, utrudljivost in presek ekstenzorjev zapestja in prstov pri poškodovancih z mikrokirurško sklenitvijo radialnega živca z avtotransplantati
Tip		monografija
Kraj izdaje		Ljubljana
Založnik		Medicinska fakulteta
Leto izdaje		1992
Obseg		str. 117
Jezik		slo
Abstrakt		The radial nerve in the upper arm is often damaged because of its exposed position. In its course around the humerus the nerve is relatively immobile, and therefore in fractures of the humerus it is often damaged to such an extent that it is ncessary to repair it with autotransplants using microsurgical techniques. The recovery of the force of muscular contraction and sensation after severing and microsurgical repair of the peripheral nerve is very varied. This study was designed to investigate to what extend the muscle strength during wrist extension had recovered after microsurgical grafting of the radial nerve with autotransplants, and whether the reinnervated muscles were more fatigable. The isometric force during wrist extension in both the affected and non-affected arms was recorded by a dynamometer, and its changes (fatigability) were observed during the maximum voluntary effort and during tetanic stimulation of the radial nerve by needles. The study included 11 patients who had undergone microsurgical repair of the severe radial nerve above the elbow and the anteposition of the stumps with autotransplants 9 - 18 years previously. Included were also a group of 9 normal volunteers. The muscle mass was evaluated as the cross-sectional area of the extensor muscles on MRI fiims of the forearm. In comparison to non-affected side, the isometric force during wrist extension and the torque in the wrist were on average by 35-40 per cent smaller on the affected side. The cross-sectional areas of the extensor muscles, however, were statistically not significantly different. The reinnervated extensors proved more fatigable than the normal ones. The interval between the beginning of stimulation and the occurence of the maximal force was several times longer on the affected side. The average isometric force in the maximum voluntary effort was 126.1 +- 45.3 N on the affected side, and 208.9 +- 49.2 N contralaterally, i.e.(trunc.)
Deskriptorji		RADIAL NERVE MICROSURGERY TRANSPLANTATION, AUTOLOGOUS MUSCLE CONTRACTION HUMERAL FRACTURES WRIST ISOMETRIC CONTRACTION