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A total of 32 male patients with spinal cord injury underwent extracorporeal shock wave lithotripsy. The mean stone burden was 2.9 cm. (range 0.2 to 8.0 cm.) per renal unit. Of 41 renal units 27 (66 per cent) required ancillary endourological procedures preoperatively and 32 (78 per cent) required a single treatment with extracorporeal shock wave lithotripsy. Urine cultures were positive in 30 of 32 patients (94 per cent) before treatment. All patients with positive preextracorporeal shock wave lithotripsy urine cultures also had positive cultures after treatment. Followup (3-month) was available for 26 of 41 renal units (63 per cent) and showed 19 (73 per cent) to be free of stones or without any radiographic evidence of calcification overlying the collecting system. Seven staghorn calculi were treated with extracorporeal shock wave lithotripsy without prior debulking procedures. Two partial staghorn calculi were treated and rendered free of stones. None of the 5 kidneys with full staghorn calculi was rendered free of stones. We conclude that extracorporeal shock wave lithotripsy is effective for the treatment of unbranched and partial staghorn calculi in the spinal cord injury patient. However, extracorporeal shock wave lithotripsy alone is less effective for the treatment of full staghorn calculi.

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