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MODIFIED PINS AND RUBBER TRACTION SYSTEM FOR COMPLEX FRACTURE-DISLOCATIONS OF THE PROXIMAL INTERPHALANGEAL JOINT

111 Wellman Croft, Selly Oak, Birmingham B29 6NS

Ten patients, who underwent treatment for complex fracture-dislocation of the proximal interphalangeal joint of finger and one patient for that of the interphalangeal joint of thumb with a modified pins and rubbers traction system, were reviewed to evaluate the clinical and functional results. Two patients had open fracture-dislocation, 5 had pilon fractures and 4 had fracture-dislocations. The system was modified to avoid rotation of the pins in the bone during joint mobilization, thus minimizing the risk of osteolysis due to friction of pins over the bone.

Michigan hand scoring system was used for subjective assessment and range of motion at proximal and distal interphalangeal joints and grip strength for objective assessment. Average follow-up was 18 months (range 3 months to 28 months). The average normalised Michigan hand score was 86. Based on Michigan scores, overall hand function was rated excellent in 8 patients, good in 2 and poor in 1. Eight patients have returned to their original jobs. The average arc of flexion in the proximal interphalangeal joint was 85 degrees and in the distal interphalangeal joint it was 47 degrees. The average grip strength was 95 percent of the uninvolved side. Two patients developed minor pin site infection, which did not necessitate pin removal or any alteration in the treatment regime. There have been no cases of osteolysis, osteitis or osteomyelitis. This modification of pins and rubbers traction system has given very acceptable results with a low complication rate. It is light, cheap, effective and easy to apply.

The abstracts were prepared by Mr Simon Donell. Correspondence should be addressed to him at the Department of Orthopaedics, Norfolk & Norwich Hospital, Level 4, Centre Block, Colney Lane, Norwich NR4 7UY, United Kingdom