الفهرس 
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Abstract
Acute scaphoid fracture is a common condition whose management still remains controversial. (3) The general accepted treatment of acute, un displaced fractures of the scaphoid is cast immobilization which is reported to produce uncomplicated healing in most instances. However, in acute displaced scaphoid fractures, it can often be difficult to reduce anatomically and maintain reduction with cast only. In addition to that, three months of cast immobilization is often recommended to achieve union, which often leads to muscle wasting and joint stiffness. (4)
We studied twenty patients with recent scaphoid fractures classified as type B according to Herbert classification ten out of the twenty patients treated by closed reduction and percutaneous Herbert screw fixation (Type A) while the other ten treated by closed reduction and percutaneous k-wire fixation (Type B).
The operations were done in Nasr city police hospital from August 2017 to December 2017.
The two groups were followed up for radiologically, clinically and regarding complications for comparison between the two groups.
In our study we used modified mayo wrist score to asses functional outcomes and x-ray to assess radiological outcomes.
group A (percutaneous Herbert screw fixation) showed average time to union 10.8 weeks while group B (percutaneous K-wires fixation) showed 12.8 weeks.
Functional results according to Mayo modified wrist score showed superiority of group A according to pain with an average of 23 while the average pain score in group B was 15,work status with an average of 24.5 while in group B the average work status score was17.5,range of motion with an average of 24.5 while in group B the average range of motion score was 19,grip strength with an average of 25 while in group B the average grip strength score was 19 and total score with an average of 97.5 while in group B the average total score was 70.5.
Percutaneous fixation with Herbert screw shows superiority in the average time to union, clinical and radiological outcomes and lower rates of the incidence of complications than percutaneous k-wires fixation.