1090 Ring Lock Aluminum Thrust Bearing Hip Joint Model 1090 locks in 180° of extension. Ball catches are standard. PRODUCTS PARTS DOCUMENTATION Looking up products... 1090 IFU English 1090 IFU French 1090 IFU Spanish 1090 IFU German 1090 IFU Crotian 1090 IFU Swedish 1090 IFU Italian 1090 IFU Turkish 1090 IFU Serbian 1090 IFU Bosnian