ARZZT Techniques Product Description ► Uncemented Metal Acetabular Cup with holes ► Uncemented Poly Line ► Uncemented Femoral Stem ► Femoral Canal Instruments

ARZZT Techniques Cementless Hip System Product Description Uncemented Metal Acetabular Cup with holes measurement 58/28 56/28 54/28 52/28 50/28 48/28 46/28 Introducing the design which makes spherical surface and conical surface combined, the cup can wedge into fine bone around acetabulum and achieve initial fixation. The dentate surface can augment its combination force with bone. 1. The surface blasted with pulverized corundum increase its combination with bone. 2. With excellent biological compatibility, HA coating induces a deeper bone grow, provideing stability during the first period and...

ARZZT Techniques Cementless Hip System Product Description Uncemented Poly Line The anti-dislocation liner can be implanted into the best position by rotation, that leads to fewer complications after operation. Both shell and liner adopt a biconical surface design to match tight. This design could prevent relatively slip which bring Polyethylene debris. The patented design of stable liner and shell-locking, which has excellent function for anti-escaping and anti-prizing, achieved better effect of implantation and stability.

ARZZT Techniques ZHSl Cementless Product Description Uncemented Femoral Stem The design of distal bullet-tip succeeds in avoiding stress shielding. The geometry design of dentate grooves increase stability of the stem, and prevent subsidence and enlarging interface. The straight stem, which is designed according to anatomy, makes it more convenient to operate and more stable to implant. PF type (corundum sandblasted) The proximal section has been sandblasted with corundum, which helps increase the conformity of the prosthesis and the bone. The product, with nice biological compatibility and excellent...

ARZZT Techniques Cementless Hip System Product Description Instrumental Acetabular Femoral Canal Instruments

Cementless Hip System Osteotomy of Femur Decide the level of osteotomy in the neck of femur with an osteotomy board, and truncate most neck of femur with 0.8~1.5cm on the left. Extracting Femoral Head Extract the femoral head with a femoral-headextractor Filing Acetabular Fossa File the acetabular fossa with an acetabular reamer to get the shape similar to artificial product with the abducent angle of about 45° and the front-pitch angle of about 15°

Cementless Hip System Acetabulum Trial Test Put trial shells into the acetabular fossa respectively to select the suitable plastic acetabular cup. Fix the metal shell into the acetabular fossa with the abducent angle of about 45° and the front-pitch angle of about 15° which is located by shell introducer and angle utensil. Usage of Acetabular Drill Drill some holes in the Acetabular fossa with an acetabular drill. Usage of Punching Utensil Punch the hole drilled by an acetabular drill to be columned with a punching utensil which is , convenient for fixation with bone-cement.

Cementless Hip System Fixation of Bone-cemented Acetabulum Fix the artificial plastic acetabular cup into the acetabular fossa with the abducent angle of about 45° and the front-pitch angle of about 15° which is located by a bone-cemented-acetabulum-beating utensil and an angle utensil after filling into bonecement. Then, the screw is released the bonecemented-acetabulum-beating utensil to separate the head and the plastic acetabulum, getting rid of redundant bone-cement, and take out bonecemented-acetabulum-beating utensil after solidification of bone-cement (Notice that the higher anti-dislocation...

Cementless Hip System Enlarging Femoral Medullary Cavity Ream the canal with a guidance reamer to prepare it for enlarging. Enlarge the canal with femoral reamers of different sizes, which should be checked about its tightness when reaching the needed dimension. Stop to enlarge the canal as soon as the certain scale line on the reamer reaches the surface of needed osteotomy. Chiseling Medullary Cavity Chisel the medullary cavity with a femur chisel hammer. Filing Femoral Medullar Cavity File the medullary cavity with medullar cavity files of different dimensions which are successively fasted...

Cementless Hip System Preparation for Neck of Femur File the neck of femur smoothly with a femoralneck-grinding file. Trial-head Test Place on the protrusion of the medullary cavity and file the trial-head base at first, then the trial head of needed diameter and neck length before repositing the bipolar hip joint and checking its tightness and stability. The First Reset Test Reset test (posterolateral incision: hip flexion with adduction 90 degrees to 15 degrees, 10 degrees with internal rotation; anterior lateral incision: adduction and external rotation of 15 degrees with 45 degrees), check...

Cementless Hip System Placement of Restrictor Place the restrictor into the medullary cavity with a restrictor holder . Remark: depth of restrictor=stem length+20mm. E.g. if the length of stem is 120mm, then the depth of restrictor should be 140mm. Filling Bone-cement Use dry gauze to clean canal with saline solution in order to maintain the medullary cavity filled with drying pressure. Mixing bone cement, which is in the adhesive silk strip of bone cement gun to be used (showed in back), was injected into the marrow cavity at the same time of bone cement compression. Femoral Stem Fixation Fix...

Cementless Hip System The Second Reset Test Installed in the trial head and the stem, to reset, do the second reset test. Select femoral head size. Installation of femoral head Fix the suitable femoral head upon the neck of the femoral stem with a femoral head impactor then reset.