EXTERNAL FIXATION APPARATUS FOR TREATMENT OF HOLLOW TALIPES Russian patent published in 2009 - IPC A61B17/56 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to infantile orthopaedics and covers treatment of hollow talipes. An apparatus comprises a ring shin rest, two pairs of threaded bars provided by nuts and an external support arm on one end of each threaded bar. One pair of threaded bars is compression, while the others are distraction. The apparatus accommodates a forefoot brace with a retainer arc, a hindfoot brace, fixation pins for fastening forefoot and hindfoot to the related braces. The ends thereof are unfolded and mating, and have coaxial apertures. On said braces, there are mounted support arms. The external support arms of the compression pair of threaded bars are hinged to the support arms mounted on said braes. The threaded bars are mounted diametrically on the ring rest. The apparatus is provided with intraosseous rods and an axial assembly. The latter comprises two symmetrical clamps and a pin axis for neck of talus. Each clamp consists of a shaft body, lock nuts and a clamping sleeve. The shaft body is provided with a longitudinal central and through channel for said pin axis. Its one end is supplied with a threaded segment for the lock nuts, while the other end represents a clamping end with longitudinal notches forming lobes, and with a threaded segment. In the centre of said body, there is a segment with wrench flats and a groove adjacent thereto from the clamping end. The clamping sleeve has a longitudinal hole being cylindrical on one end and threaded for the threaded segment of the clamping end. The hole is tapered on the other end to compress said lobes. The external support arms of the distraction threaded bars are holed. Each end with the threaded segment for the lock nuts is located in coaxially aligned apertures of the matched ends of said braces and the external support arms of the distraction threaded bars. The lock nuts provide fixation of the external support arms of the distraction threaded bars and the matched ends of said braces on the threaded segments of the shaft bodies. The intraosseous rods are fastened to the ring shin rest.

EFFECT: invention provides prevention of therapeutic complications due to forefoot and hindfoot pivot fixed in and on neck of talus.

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