Orion 3 Product Training Alignment Orion 3 Alignment

Orion 3 Product Training Alignment

Orion 3 - Alignment Bench Alignment Static Alignment Dynamic Alignment Trouble Shooting

Bench Alignment of Socket • Measure patients hip flexion using Thomas test in: • Lying supine • Standing • Determine weight line on socket • Bisect socket at hip level • Add measured hip flexion + 5° • The correct socket alignment is critical for knee to function optimally

Bench Alignment • Proximal Attachments (order separately) • Rotating Pyramid with Shift – 239017 • Non-rotating Pyramid with Shift – 239089 • Female Pyramid with Shift – 189128 • M 36 Threaded Adaptor – 239092 • 15 mm of shift • Male pyramid distal attachment

Bench Alignment • Weight line – 5 -10 mm anterior to knee pivot • Foot - as per fitting instructions

For Hydraulic Ankles… • Hydraulic range 9° • 6° plantarflexion • 3° dorsiflexion • Weight line 0 -5 mm behind ankle pivot • Standing balance • Too far in front = rest on front stop • Too far behind = fall back

For Hydraulic Ankles… • Correct A-P placement of the foot is critical for correct function • Adjust until wearer feels stable • Ensure there is sufficient dorsiflexion range

For Hydraulic Ankles… • Use the Foot alignment wedge • With users shoe on • Fully plantarflex foot • Weight line – mark on foot or 5 mm behind anterior pivot • Part number - 940093

Bench Alignment • Little or no alignment required between the foot and the knee now • All alignment to be done above knee (5 -10 mm in front of knee joint)

Orion 3 - Alignment Bench Alignment Static Alignment Dynamic Alignment Trouble Shooting

Static Alignment • Patient should stand comfortably without knee flexing • If knee unstable, consider: • Sufficient socket flexion? • Check weight line at least 5 -10 mm in front of the knee • If using a hydraulic foot then check the patient is not falling forwards or backwards on the ankle

Orion 3 - Alignment Bench Alignment Static Alignment Dynamic Alignment Trouble Shooting

Dynamic Alignment • Using the User Interface - Set resistance for sitting in a chair • In the bars - calibrate toe load for stance release • User is now able to walk safely for Dynamic Alignment

Orion 3 - Alignment Bench Alignment Static Alignment Dynamic Alignment Trouble Shooting

Trouble Shooting Problem Solution Knee flexing while standing or trying to yield during normal walking Weight line is going behind the knee. Shift socket anteriorly – weight line to go 5 -10 mm anterior to knee pivot When using a hydraulic ankle, user is falling forward when standing. Weight line is falling too far forward on the foot. Providing that the alignment wedge and the users current footwear has been used to set up the leg then the relationship between the foot and the knee should be correct. Therefore the socket should be shifted posteriorly. When using a hydraulic ankle, user is falling forward when standing. Weight line is falling too far back on the foot. Providing that the alignment wedge and the users current footwear has been used to set up the leg then the relationship between the foot and the knee should be correct. Therefore the socket should be shifted anteriorly.