[Postoperative CT-controlled results of renewed osteosynthesis using screw fixation for acute scaphoid fractures].

Background: Currently screw fixation of the scaphoid is a well-established method to treat unstable scaphoid fractures.

Patients And Methods: Between June 1995 and December 2000, 68 patients with an unstable acute scaphoid fracture were treated with screw fixation; 46 patients were reexamined on an average 35 months postoperatively. Range of motion and grip strength (Jamar dynamometer) were measured. The total data rating resulted from the Krimmer wrist score.

Results: The subjective results were evaluated with the DASH questionnaire. The average postoperative pain score was documented with a visual analogous pain scale from zero to 100 (VAS 0-100). X-rays as well as computed tomography were performed postoperatively. The average range of motion was 124 degrees for extension/flexion (92% of the opposite site), 57 degrees for radial/ulnarduction (=90%), and 177 degrees for pronation/supination (=98%). Postoperative strength was 47 kg (=90% of the opposite site). The postoperative pain score was 13 (0-100) after stress and 2 during resting conditions. Bony consolidation was reached in 44 cases. The Krimmer wrist score demonstrated a very good result in 39 cases, a good result in 5 cases, and a satisfactory result in 3 cases. The average DASH score was 8.3 points.

Conclusions: The results demonstrate the reliability of internal screw fixation as treatment for acute scaphoid fractures. Functional results as well as subjective satisfaction of the patients are very good. Postoperative CT scans help to evaluate exact bony consolidation, position of the screw, and postoperative morphology of the scaphoid.