Cystoscope mechanical lithotripsy 92 cases Clinical Experience General calculus of urinary tract stones after surgery contraindication. Incarcerated 1,000 prostatic urethra urethra injection or urethral dilator, stone roof into the bladder, in this group after two cases of urinary tract stones because of preoperative stones into the bladder causing urethral injury, a down Park injury, severe bleeding resulting in surgical failure. Transurethral lithotripsy must have a larger bladder filling. This is particularly important in the domain cystatin mirror mechanical lithotripsy. In addition to a single bladder stones, urinary irritation levy not obvious application of dry film anesthesia commonly used epidural anesthesia or interval of hemp can reduce bladder irritation + reduce bladder pressure bladder completely filling the mucosal folds (rev 347) ·； 344 ·； Bu get to overcome. Erder nail in the medullary cavity was cross-shaped, and enhance the stability control fracture from a multidimensional perspective, to ensure that the fracture-bit accurate, reliable fixation, and significantly reduce the postoperative fracture angulation of the rotation, shift and other complications]. Because of its parts into the nail away from the fracture, the wound should not be a closed, especially for the 23 side in this group, only one case of femoral fractures appear to bend 15. delayed healing. Automatic pressurized sticky bone advantage of rigid fixation. After surgery without external fixation to facilitate observation of the wound and dressing after surgery to restore function, and favorable wound and bone healing. The framework of its long strip of the ring structure is more suitable for the treatment of long oblique comminuted fracture, as well as to avoid pin tract infection advantages, but its operation is slightly more complicated postoperative callus growth, taking in addition to regular difficulties. 1 cases 1 year after the chisel in addition to the taking of the external callus fracture in addition to internal fixation of the fifth day of the 25 side. V V-shaped nails of this group of four cases, breakage of one cases; bone nails l1 cases, bending one cases. The 4.3 associated injuries, associated injuries, shock rate, often tainted, and misdiagnosis; treatment of contradictions, need a comprehensive disease to save lives on the principle. 4.4 Complications deep wound infection required the stitches drainage; osteomyelitis cases, should be adequate drainage, the selection of sensitive antibiotics; nonunion should be grafting, supplemented by electrical stimulation, magnetic therapy to promote healing. Fixed infection in the treatment of complicated, the need to distinguish between primary and secondary fixation whether to retain. We experience it is premature to removing internal fixation. Of course, the fixation exist will affect infection control, and delayed healing time; the other hand, the fixation can continue to maintain the stability of the bone ends conducive to fracture healing and to prevent deformity, while the latter is more significance to the wounded.