Mechanical Knee Prescription Guide

Mechanical Knee Prescription Guide

CONTENTS K1 LOCKING KNEE 1 K1 - K2 BALANCE KNEE OFM1 2 BALANCE KNEE OFM2 3 K2 BALANCE KNEE OM8 4 TOTAL KNEE 1900 5 K2 - K3 OP2 KNEE 6 OP4 KNEE 7 OP5 KNEE 8 OHP3 KNEE 9 K2 - K4 PASO KNEE 10-11 K3 TOTAL KNEE 2000 12 OH5 KNEE 13 K3 - K4 TOTAL KNEE 2100 14 OH7 KNEE 15 MAUCH KNEE 16 MAUCH KNEE PLUS 17 K4 CHEETAH KNEE 18 PAEDIATRIC TOTAL KNEE 1100 19 ADAPTERS ADAPTERS 20 CLOSING GEOMETRY CLOSING GEOMETRY 21 OVERVIEW MAUCH KNEE (K3-K4) TOTAL KNEE 2100 (K3-K4) MAUCH KNEE PLUS (K3-K4) CHEETAH KNEE (K4) TOTAL KNEE 1100 (PAEDIATRIC) LOCKING KNEE (K1) BALANCE KNEE OFM2 (K1-K2) OH7 KNEE (K3-K4) BALANCE KNEE OMF1 (K1-K2) OH5 KNEE (K3) BALANCE KNEE OM8 (K2) TOTAL KNEE 2000 (K3) PASO KNEE (K2-K4) OHP3 KNEE OP5 KNEE OP4 KNEE (K2-K3) (K2-K3) (K2-K3) OP2 KNEE (K2-K3) TOTAL KNEE 1900 (K2)

LOCKING KNEE The Locking Knee is a simple, reliable, lightweight knee joint for low active amputees. It features a single function lever to unlock the knee for sitting, and is suitable for users who require the highest stability in stance. Slim profile and light weight unit High stability requirements Stable standing Stable walking with locked knee Transfers RECOMMENDED FOOT LIMIT 125kg 248g 47mm 140 N/A Manual Locking Flex-Foot Balance 28mm Part Number LKN12500 Locking Knee 67mm 40mm K1 ACTIVITY LEVEL 1

BALANCE KNEE OFM1 The Balance Knee OFM1 is a polycentric knee with optional locking mechanism and integrated extension spring for increased security and early gait training. It is an excellent choice for interim and definitive prosthetic fitting. Low proximal build height ideal for long residual limbs and knee disarticulation users Integrated rotation and shift adjustments with pyramid adapter Choice of 4 socket connection options, providing a variety of shift, rotation, tilt and stance flexion adjustments: Pyramid Loop 3-Arm Loop IKF May require manual lock during early rehabilitation Requires basic 4-Bar stability during early stance Ability or potential for single-speed ambulation Primarily traversing level ground surfaces LIMIT 136kg 150 640g Adjustable Extension Assist 107mm Constant Friction 4-Bar Geometry Flex-Foot Balance Flex-Foot Balance with DP Flexion (hydraulic ankle unit) Balance Foot J 151mm 116mm 27mm 1721126 Balance Knee OFM1 with pyramid adapter 1721127 Balance Knee OFM1 with IKF adapter 1721128 Balance Knee OFM1 with loop adapter 1721129 Balance Knee OFM1 with 3-arm socket adapter M721222 Dual function lever OFM1 K1 - K2 ACTIVITY LEVEL 2

BALANCE KNEE OFM2 The Balance Knee OFM2 is a mechanical monocentric knee joint featuring a weight activated brake, optional locking mechanism and integrated extension spring. The optional lock makes this knee versatile for use in initial rehabilitation and beyond. Optional locking for additional security Individual adjustable stance safety Brake play screw Users who may require a lock during early rehabilitation Lack of awareness of knee flexion - requires increased stability throughout stance Ability or potential for single-speed ambulation Primarily traversing level ground surfaces LIMIT 125kg 145 495g 63mm Adjustable Extension Assist Brake Sensitivity Flex-Foot Balance Flex-Foot Balance with DP Flexion (hydraulic ankle unit) Balance Foot J Optional Manual Lock 23mm 1721120 Balance Knee OFM2 M721223 Dual function lever OFM2 115mm 63mm K1 - K2 ACTIVITY LEVEL 3

BALANCE KNEE OM8 The Balance Knee OM8 is a mechanical polycentric knee suitable for transfemoral users of a lower activity level. It features adjustable geometry with stance release setting, allowing the knee to be individually optimised for the user. Adjustable centroid enables a fast and practical set up Small and compact, rated to 136kg Users with low voluntary control, requiring stability in early stance Ability or potential for single-speed ambulation Primarily traversing level ground surfaces LIMIT 136kg Adjustable Extension Assist Constant Friction 450g 76mm 4-Bar Geometry Adjustable Centroid Flex-Foot Balance Flex-Foot Balance with DP Flexion (hydraulic ankle unit) Balance Foot J 160 12mm 1723178 Balance Knee OM8 128mm 76mm K2 ACTIVITY LEVEL 4

TOTAL KNEE 1900 The Total Knee 1900 offers the greatest level of stability available in a polycentric design to loweractivity users. The adjustable geometric lock provides superior stability compared to 4-bar knees whilst delivering increased toe clearance in swing to help prevent stumbles. Adjustable stance flexion provides up to 15 of knee flexion for shock absorption in early stance. Increased toe clearance during swing to help prevent stumbles Integrated and adjustable stance flexion capability Integrated extension promoter Optional extension assist Polymer friction-provides smooth swing control Choice of 4 proximal socket connection options: 4-Prong Socket Euro 4-Hole Female Pyramid Male Pyramid LIMIT 100kg 675g 129mm 160 Adjustable Extension Assist Constant Polymer Friction Adjustable Extension Promoter Adjustable Geometric Lock ( Stability) Adjustable stance flexion Requires enhanced knee stability beyond basic 4-bar during early stance Ability or potential for single-speed ambulation Primarily traversing level ground surfaces Can benefit from stance flexion during early stance Flex-Foot Balance Flex-Foot Balance with DP Flexion (hydraulic ankle unit) Balance Foot J 25mm 57mm 91mm 1900 Total Knee 1900 A-114040 4-prong socket adapter A-122300 Euro 4-hole adapter A-834300 Male pyramid adapter A-845300 Female pyramid adapter K2 ACTIVITY LEVEL 5

OP2 KNEE The OP2 Knee is a pneumatic polycentric knee, for users with capacity to vary their walking speed. Adjustable stance release provides customised stability on level and uneven ground. Flexion and extension dampening are set independently to optimise symmetry, timing and gait efficiency. Slim design allows ease of cosmetic finishing Requires basic 4-bar stability during early stance Ability or potential for cadence variation Primarily traversing level ground surfaces Some need to traverse uneven ground, shallow slopes LIMIT 125kg 650g 160mm 160 Pneumatic 4-Bar Geometry Adjustable Centroid Balance Foot J Assure Talux 18mm 1724120 OP2 Knee 195mm 160mm K2 - K3 ACTIVITY LEVEL 6

OP4 KNEE The OP4 Knee features a weight activated break, with pneumatic swing control. It is ideal for users who are capable of varying their walking speeds whilst requiring the stability of a friction brake knee. The friction brake is finely adjustable, allowing it to be made very safe for users with less voluntary control. Slim design allows ease of cosmetic finishing Brake play screw Lack of awareness of knee flexion - requires stability throughout stance Ability or potential for cadence variation Regularly traversing different terrain: level and uneven ground, shallow slopes LIMIT 100kg 680g 146mm 145 Pneumatic Brake Sensitivity Balance Foot J Assure Talux 26mm 1720185 OP4 Knee 198mm 146mm K2 - K3 ACTIVITY LEVEL 7

OP5 KNEE The OP5 Knee is a pneumatic polycentric knee joint with finely adjustable flexion and extension resistance. It is suitable for transfemoral and knee disarticulation users capable of varying their walking speeds up to 4km/hour. Low proximal build height ideal for long residual limbs and knee disarticulation users Choice of 4 socket connection options, providing a variety of shift, rotation, tilt and stance flexion adjustments: Pyramid Loop 3-Arm Loop IKF Requires basic 4-bar stability during early stance Ability or potential for cadence variation Primarily traversing level ground surfaces Some need to traverse uneven ground, shallow slopes LIMIT 125kg 770g 160mm 145 Pneumatic 4-Bar Geometry Balance Foot J Assure Talux 18mm 1720180 OP5 Knee with pyramid adapter 1720182 OP5 Knee with IKF adapter 1720181 OP5 Knee with loop adapter 1720183 OP5 Knee with 3-arm adapter 195mm 160mm K2 - K3 ACTIVITY LEVEL 8

OHP3 KNEE The OHP3 Knee is a polycentric knee with a powerful pneumatic swing phase control cylinder which enables walking speeds greater than 4km/hour. Unique closing geometry creates an inherently more stable system during stance than a standard 4-bar design. It ensures optimal stance phase stability from loading response through terminal stance until weight is applied on the toe in conjunction with a hip flexion moment to release the knee. Low proximal build height ideal for long residual limbs and knee disarticulation users Powerful pneumatic cylinder Closing geometry (refer to page 22) Choice of 4 socket connection options, providing a variety of shift, rotation, tilt and stance flexion adjustments: Pyramid Loop 3-Arm Loop IKF LIMIT 125kg High Pressure Pneumatic Requires enhanced knee stability beyond basic 4-bar during early stance Ability or potential for moderate cadence variation Regularly traversing different terrain: level and uneven ground, shallow slopes 875g 157mm 4-Bar Closing Geometry ( Stability) - adjustable Wedges for adjustable stance release 150 Balance Foot J Assure Talux 17mm 1728160 OHP3 Knee with pyramid adapter 1728161 OHP3 Knee with IKF adapter 210mm 157mm 1728162 OHP3 Knee with loop adapter 1728163 OHP3 Knee with 3-arm adapter K2 - K3 ACTIVITY LEVEL 9

PASO KNEE The PASO Knee features an innovative autoadaptive pneumatic swing phase control which requires no valve adjustments. The knee will automatically respond to any change in cadence up to 7km/hr with no adjustments required from the prosthetist. The PASO Knee is suitable for a wide range of users due to its stability and responsiveness. Unique closing geometry creates an inherently more stable system during stance than a standard 4-bar design. It ensures optimal stance phase stability from loading response through terminal stance until weight is applied on the toe in conjunction with a hip flexion moment to release the knee. Low proximal build height ideal for long residual limbs and knee disarticulation users Auto-adaptive pneumatic swing phase control adapts automatically Closing geometry (refer to page 22) Choice of 4 socket connection options, providing a variety of shift, rotation, tilt and stance flexion adjustments Pyramid Loop 3-Arm Loop IKF LIMIT 136kg 150 1050g Auto-adaptive Pneumatic Requires enhanced knee stability beyond basic 4-bar during early stance Ability or potential for moderate - high cadence variation Regularly traversing different terrain: level and uneven ground, shallow slopes Higher loading or impact requirements 158mm 4-Bar Closing Geometry ( Stability) - adjustable Modular Pro-Flex 1728180 PASO Knee with pyramid adapter 1728181 PASO Knee with IKF adapter 1728182 PASO Knee with loop adapter 1728183 PASO Knee with 3-arm adapter Torsion Rotate Shock K2 - K4 ACTIVITY LEVEL 10

PASO KNEE POWERFUL & PRECISE ADAPTATION The PASO Knee offers powerful, but precise movements for a range of activities. The joint adapts instantly to changing speeds (up to 7 km/h) to provide the user with freedom of movement and safety at the same time. The intelligent construction of the pneumatic system eliminates the need for time consuming adjustment of flexion and extension resistance during the dynamic trial fitting session. The PASO Knee s damping profile adapts to the user s walking speed. This is achieved by opening or closing the appropriate air ducts inside the pneumatic system. High flexion of the knee joint (up to 150 ) is possible, which is particularly advantageous when, for instance, kneeling, sitting, or getting into the car. HOW THE PNEUMATIC SYSTEM WORKS Airflow behaviour in the pneumatic system at 2 km/h: lower resistance due to the open side air duct. Airflow behaviour in the pneumatic system at 7 km/h: higher resistance due to the closed side air duct. Dampening knee flexion limits excessive heel rise, and assists in promoting knee extension. AUTOADAPTIVE FUNCTION OF THE PNEUMATIC SYSTEM The diagram shows clearly that the PASO Knee pneumatic unit adapts to varying requirements depending on the respective walking speed (up to 7 km/h). This way the knee joint always provides the damping that the user needs. This promotes a physiological, safe and efficient gait. Pressure SPEED Slow Medium Fast Piston stroke travel The pressure in the pneumatic system varies with the piston stroke travel depending on the walking speed. (Source: Össur Bayreuth Gaitlab) K2 - K4 ACTIVITY LEVEL 11

TOTAL KNEE 2000 The adjustable geometric lock provides superior stability compared to 4-bar knees whilst delivering increased toe clearance in swing to help prevent stumbles. Adjustable stance flexion provides up to 15 of knee flexion for shock absorption in early stance. 3-phase hydraulic control allows for fine tuning of swing flexion settings to optimise dynamics and comfort. Increased toe clearance during swing to help prevent stumbles Integrated and adjustable stance flexion capability Integrated extension promoter Optional extension assist Choice of 4 proximal socket connection options: 4-Prong Socket Euro 4-Hole Female Pyramid Male Pyramid LIMIT 100kg 160 Requires enhanced knee stability beyond basic 4-bar during early stance Ability or potential for moderate-high cadence variation Regularly traversing different terrain: level and uneven ground, shallow slopes Can benefit from stance flexion during early stance 690g 3-Phase Hydraulic 129mm Adjustable Geometric Lock ( Stability) Adjustable stance flexion Modular Pro-Flex 25mm 57mm Torsion Rotate Shock 91mm 2000 Total Knee 2000 A-114040 4-prong socket adapter A-122300 Euro 4-hole adapter A-834300 Male pyramid adapter A-845300 Female pyramid adapter K3 ACTIVITY LEVEL 12

OH5 KNEE The OH5 knee is a polycentric knee joint with a 3-phase hydraulic swing phase control which enables walking speeds up to 10km/hr. 3-phase hydraulic control allows for fine tuning of swing phase settings to optimise dynamics and comfort. Unique closing geometry creates an inherently more stable system during stance than a standard 4-bar design. It ensures optimal stance phase stability from loading response through terminal stance until weight is applied on the toe in conjunction with a hip flexion moment to release the knee. Low proximal build height ideal for long residual limbs and knee disarticulation users Closing geometry (refer to page 22) Choice of 4 socket connection options, providing a variety of shift, rotation, tilt and stance flexion adjustments: Pyramid Loop 3-Arm Loop IKF Requires enhanced knee stability beyond basic 4-bar during early stance Ability or potential for moderate-high cadence variation Regularly traversing different terrain: level and uneven ground, shallow slopes LIMIT 100kg 830g 150 3-Phase Hydraulic 132mm 4-Bar Closing Geometry ( Stability) Modular Pro-Flex 17mm 184mm 132mm Torsion Rotate Shock 1722176 OH5 Knee with pyramid adapter 1725176 OH5 Knee with IKF adapter 1722175 OH5 Knee with loop adapter 1722177 OH5 Knee with 3-arm adapter K3 ACTIVITY LEVEL 13

TOTAL KNEE 2100 The Total Knee 2100 offers high stability, responsive 3-phase hydraulic swing control and integrated stance flexion in a heavy duty package for high activity clients. The adjustable geometric lock provides superior stability compared to 4-bar knees while also delivering increased clearance during swing phase to prevent stumbles. 3-phase hydraulic control allows for fine tuning of swing phase settings to optimise dynamics and comfort. All Total Knee models also include an integrated extension promoter which assists in limiting heel rise while providing more rapid knee extension. Increased toe clearance during swing to help prevent stumbles Integrated and adjustable stance flexion capability Integrated extension promoter Low proximal build height ideal for long limbs Choice of 4 proximal socket connection options: 4-Prong Socket Euro 4-Hole Female Pyramid Male Pyramid LIMIT 125kg 900g 131mm 3-Phase Hydraulic Adjustable Geometric Lock ( Stability) Adjustable stance flexion Requires enhanced knee stability beyond basic 4-bar during early stance Ability or potential for moderate - high cadence variation Regularly traversing different terrain: level and uneven ground, shallow slopes Can benefit from stance flexion during early stance Higher loading or impact requirements 160 25mm 58mm Modular Pro-Flex 92mm Torsion Rotate Shock K3 - K4 ACTIVITY LEVEL 14

OH7 KNEE The OH7 Knee provides OH5 Knee functions in a heavy duty design for loads up to 136kg. The 3-phase hydraulic swing phase control enables walking speeds up to 10km/hr. 3-phase hydraulic control allows for fine tuning of swing-flexion settings to optimise dynamics and comfort. Unique closing geometry creates an inherently more stable system during stance than a standard 4-bar design. It ensures optimal stance phase stability from loading response through terminal stance until weight is applied on the toe in conjunction with a hip flexion moment to release the knee. Low proximal build height ideal for long residual limbs and knee disarticulation users Closing geometry (refer to page 22) Adjustable geometry for stability adjustment using a wedge Choice of 4 socket connection options, providing a variety of shift, rotation, tilt and stance flexion adjustments: Pyramid Loop 3-Arm Loop IKF LIMIT 136kg 930g 134mm 150 3-Phase Hydraulic 4-Bar Closing Geometry ( Stability) - adjustable Single wedge for adjustable stance release Requires enhanced knee stability beyond basic 4-bar during early stance Ability or potential for moderate - high cadence variation Regularly traversing different terrain: level and uneven ground, shallow slopes Higher loading or impact requirements Modular Pro-Flex 19mm 186mm 134mm Torsion Rotate Shock 1725180 OH7 Knee with pyramid adapter 1725181 OH7 Knee with IKF adapter 1725182 OH7 Knee with loop adapter 1725183 OH7 Knee with 3-arm adapter K3 - K4 ACTIVITY LEVEL 15

MAUCH KNEE Designed for cadence and terrain variance, the Mauch Knee utilises a hydraulic swing and stance (SNS) control unit in conjunction with a robust aluminium frame design. The hydraulic swing control allows for a wide range of cadence variation. Step over step decent of stairs and ramps is possible with the hydraulic stance control. The U-Lever allows users to engage a manual lock or swing-only mode of operation. The manual lock is useful for descending extremely steep terrain, climbing ladders, or standing for long periods. The swing-only mode is useful when riding a bike or doing gym work. Low resistance model available High resistance model available Swing-only model - for athletics and running Regularly traverses all types of terrain including moderate slopes and stairs Requires stance yield for descending stairs and slopes foot over foot Ability or potential for moderate - high cadence variation May utilise manual lock for prolonged standing or extreme stability needs May utilise swing-only mode for cycling or gym work LIMIT 136kg Hydraulic 1140g 220mm Hydraulic with yield control Manual lock mode Swing-only mode Modular Pro-Flex 115 Torsion Rotate Shock MKN71360 Mauch Knee Kit SNS MKN71361 Mauch Knee Kit SNS - Low Resistance MKN71362 Mauch Knee Kit MKN71363 Mauch Knee Kit SNS - High Resistance K3 - K4 ACTIVITY LEVEL 16

MAUCH KNEE PLUS Designed for cadence and terrain variance, the Mauch Knee Plus utilises a hydraulic swing and stance (SNS) control unit in conjunction with a heavy-duty aluminium frame design for higher loading and impact requirements. The hydraulic swing control allows for a wide range of cadence variation. Step over step decent of stairs and ramps is possible with the hydraulic stance control. The U-Lever allows users to engage a manual lock or swing-only mode of operation. The manual lock is useful for descending extremely steep terrain, climbing ladders, or standing for long period. The swing-only mode is useful when riding a bike or doing gym work. Lower proximal build (vs. Mauch Knee) - for long limbs or knee disarticulation users Ability to incorporate a multitude of 4-hole adapter options Low resistance model available High resistance model available Swing-only model - for athletics and running Highest weight limit in Össur knee range (166kg) LIMIT 166kg 1210g 211mm 125 Hydraulic Hydraulic with yield control Manual lock mode Swing-only mode Regularly traverses all types of terrain including moderate slopes and stairs Requires stance yield for descending stairs and slopes foot over foot Ability or potential for moderate - high cadence variation May utilise manual lock for prolonged standing or extreme stability needs May utilise swing-only mode for cycling or gym Higher loading or impact requirements MKN71660 MKN71661 Mauch Knee Plus Kit SNS Mauch Knee Plus Kit SNS - Low Resistance Modular Pro-Flex MKN71662 Mauch Knee Plus Kit - Swing Only MKN71663 MKN71664 MKN71665 MKN71666 MKN71667 Mauch Knee Plus Kit SNS - Through Hole Mauch Knee Plus Kit SNS - Low Resistance - Through Hole Mauch Knee Plus Kit - Swing Only - Through Hole Mauch Knee Plus Kit SNS - High Resistance Mauch Knee Plus Kit - Swing Only - Through Hole - High Resistance Torsion Rotate Shock K3 - K4 ACTIVITY LEVEL 17

CHEETAH KNEE Lightweight, compact polycentric knee designed specifically for extended running activities. Utilises an enhanced 3-phase hydraulic swing phase control unit for faster swing extension. Low proximal build height ideal for long limb More responsive hydraulic control system than Total Knee 2100 for faster displacement of fluid, providing faster flexion and extension Choice of 4 socket connection options: 4-Prong Socket Euro 4-Hole Female Pyramid Male Pyramid Ability or potential to engage in extended jogging or running activities LIMIT 100kg 620g 108mm 110 3-Phase Hydraulic 4-Bar Geometry Flex-Run CKN10000 Cheetah Knee A-114040 4-prong socket adapter A-122300 Euro 4-hole adapter A-834300 Male pyramid adapter A-845300 Female pyramid adapter K4 ACTIVITY LEVEL 18

TOTAL KNEE 1100 The Total Knee 1100 is a small version of the adult Total Knee models which offers security, natural motion, walking ease, and easy cosmetic finishing. A versatile knee system with great range of motion and low proximal clearance requirements makes it easy to fit on a wide range of limb deficiencies and activity levels. Integrated stance flexion capability Integrated extension promoter Low proximal build height ideal for long limbs Choice of 3 proximal connection options: 4-prong socket adapter, euro 4-hole adapter and male pyramid adapter For children of all activity levels Requires enhanced knee stability beyond basic 4-bar during early stance Regularly traversing different terrain: level and uneven ground, shallow slopes Can benefit from stance flexion during early stance LIMIT 45kg 395g 121mm 160 19.2mm 57.7mm Adjustable Extension Assist Adjustable Extension Promoter Adjustable Geometric Lock ( Stability) Adjustable stance flexion Junior Flex-Foot Junior 1100 Total Knee 1100 AJ-114040 Paediatric 4-prong socket adapter AJ-122300 Paediatric 4-hole adapter AJ-831300 Paediatric pyramid adapter 79mm PAEDIATRIC 19

ADAPTERS ALIGNMENT FLEXIBILITY The 3-arm socket adapter and loop adapter are good options when clearance is limited. The pyramid adapter and 3-arm loop adapter provide shift and rotation for greater adjustability. The IKF adapter provides stance flexion for users who would benefit from increased shock absorption during loading response. SOCKET CONNECTOR OPTIONS Pyramid 3-Arm Loop Loop IKF 5mm AP/ML shift 360 rotation 5mm AP/ML shift 360 rotation Can tilt up to 10 in any direction using discs 360 rotation possible Stance flexion bumpers provide shock absorption at heel strike No shift No Rotation Knees Suited To s Balance Knee OFM1 OP5 Knee OHP3 Knee PASO Knee OH5 Knee OH7 Knee 1970863 Pyramid adapter M631100 IKF adapter 1970862 Loop adapter M618500 3-arm adapter 4-Prong Socket Euro 4-Hole Male Pyramid Female Pyramid Knees Suited To s Total Knee 1900 Total Knee 2000 Total Knee 2100 Cheetah Knee A-114040 4-prong socket adapter A-122300 Euro 4-hole adapter A-834300 Male pyramid adapter A-845300 Female pyramid adapter ADAPTERS 20

CLOSING GEOMETRY SUPERIOR STABILITY Closing geometry provides a higher level of stability in stance than a standard 4-bar design by maintaining a stable and extended knee until toe load is applied in conjunction with a hip flexion moment. The level of safety created by the closing geometry is comparable to the geometric locking system of the Total Knee range. ICR Center of rotation / ICR INITIAL CONTACT AND LOADING RESPONSE The instantaneous center of rotation is in front and below the ground reaction force. The knee is fully extended and inherently stable even if the user creates a hip flexion moment. MIDSTANCE The front and rear bars move into parallel position. The instantaneous center of rotation moves proximal and posterior. The ground reaction force remains anterior to the knee and maintains stability until toe load and a hip flexion moment is initiated. PRE-SWING With toe load and hip flexion moment initiated, the ground reaction force moves posterior to the instantaneous center of rotation and the knee flexes and enters swing phase. For more active individuals or those with greater levels of voluntary control, stability can be adjusted to make the knee feel more lively and easier to release by using adjustment wedges. KNEES FEATURING CLOSING GEOMETRY OHP3 PASO Knee OH5 OH7 CLOSING GEOMETRY 21

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