In hip surgery, the size specifications of titanium alloy surgical instruments and prosthetic components vary due to brand and design differences. The following is the main information:
1.Titanium alloy surgical instruments
Intramedullary files and trial neck molds
The intramedullary file models include 1#-8#, corresponding to different diameters (such as 1# corresponding to Ф10.4/8.4, 8# corresponding to 16.4/10.6).
The cervical collar trial molds are divided into biological type and bone cement type. The biological type corresponds to 1#-9#, and the bone cement type corresponds to 1#-5#.
Bone cement related instruments
The bone cement intramedullary file head has the same model as the ordinary intramedullary file head (1#-8#). The bone cement file head must be used with bone cement.
Revision instruments
Revision handles (such as the Optimus series) are available in a variety of specifications, such as a 170mm handle body with an eccentricity of 42, a neck length of 59.4mm, and a distal diameter of 14-22mm increments.
2.Titanium alloy prosthetic component size specifications
1.Femoral stem
Type I: Titanium alloy microporous joint handle, neck-shaft angle 130°
Handle length 141-174mm, distal diameter 7-13mm, with two coatings (sandblasting/titanium spraying).
Zhengtian Diamond Hip: Proximal width 24.8-30.9mm, distal width 5.7-10.0mm, handle length 115-170mm, neck-shaft angle 135°, distal diameter 10.4-20.6mm.
Combined system matrix handle: 13 sizes (#1-#13) at the proximal end, 10-15mm in diameter at the distal end, with titanium plasma + HA double-layer coating.
2.Acetabular cup
microporous acetabular cup: diameter 44-60mm, inner ball diameter 24-28mm, surface can be sandblasted or titanium sprayed,
Joint system acetabular cup: outer diameter 44-62mm, inner diameter 24-28mm, screw length 15-50mm.
3.Ball head
Internationally used 12/14 taper, diameter 22-28mm, adjustable length +3.5 to +15.5mm.
3. Material Features
Titanium alloys (such as Ti-6Al-4V) are widely used due to their high strength, low elastic modulus (about 110GPa) and excellent biocompatibility. Surface treatment technologies (such as microporous coatings and HA coatings) can promote bone ingrowth.
The above data should be selected in combination with specific surgical needs and doctor's advice. The specifications of different brands may vary.
