FIXATION DEVICE FOR A MAU-TYPE OSTEOTOMY PROCEDURE

摘要

An internal plate fixation device is provided for load bearing and non-load bearing fixation for the Mau-type osteotomy procedure for hallux valgus correction in the first metatarsal bone of the foot. The preferred example includes a set design plate having screw holes for attachment of the plate to the first metatarsal bone of the foot. Screw holes are located on the plate, including screw holes on top of the plate and screw holes at the ends of the plate. A temporary small holding wire hole is located in the plate to hold the plate to the bone temporarily. This plate allows both angled screw fixation of the Mau osteotomy and locking screw hole capability to ensure stability when fixating the Mau osteotomy.

主权项

1. A method for fixation of a hallux valgus correction of a first metatarsal bone of a foot of a patient achieved by a Mau-type osteotomy procedure, the method comprising:
performing the Mau-type osteotomy procedure to achieve a desired hallux valgus correction of the first metatarsal bone of the foot of the patient; selecting a fixation device from a kit of fixation devices based on a characteristic of the patient and/or the desired correction, the kit comprising two or more different sizes of fixation devices, each size being compatible with a respective predefined class of patient, each fixation device comprising:
a middle section comprising two initial fixation screw holes;first and second legs at opposite ends of the middle section;the middle section comprising first and second transfer sections adjacent the first and second legs, respectively, the thickness of the device decreasing at each transfer section from a first thickness to a second thickness of the respective leg;the device having an initial curvature compatible with its respective predefined class of patient;the legs each comprising a threaded screw hole;the initial fixation screw holes being non-locking screw holes adapted for angulation of non-locking screws to fixate the correction achieved by the Mau-type osteotomy procedure, applying the selected fixation device for initial fixation of the correction; after initial fixation of the correction, adjusting the selected fixation device to the anatomy of the patient's bone by bending down one or both of the legs, the fixation device having a variable thickness such that the fixation device is adapted to bend at portions oblique to a longitudinal axis of the fixation device to adjust to the anatomy of the patient's bone; performing final fixation of the correction by applying screws through the threaded screw holes of the legs of the selected fixation device.