Lower limb prosthesis control unit. Can you try different prosthetic knee units? Every day, this innovation helps patients walk more confidently so they can walk wherever they want without fear of stumbles or falls. The Kenevo is the world's first and only microprocessor knee designed specifically for users with mobility limitations who need a high level of stability. One study that evaluated performance repeatedly after a knee component change showed continual improvement during the observation period. I was given a C-Leg (1st Gen) as my first knee (with an Ossur foot, shush), and I hated it for its weight. I am an AKA in Singapore and am just now practicing with my new leg which is an Ottobock 3R78 and a basic type foot i think. 2010, Burnfield et al. Mechanical knees can be single axis or polycentric, and may be weight activated or other mechanical controls such as hydraulicor pneumatic. 2018 Oct;58:116-122. doi: 10.1016/j.clinbiomech.2018.07.012. A NMPK is a mechanical knee with either hydraulic or pneumatic controls. Get in touch with Ottobock UK by completing the enquiry form below. The warmer the hydraulic unit gets, the more it looses its stance control function. The involuntary control is improved by correlating the stance phase period with swing phase damping, allowing an improved swing phase response as the users walking speed varies to prevent premature or delayed knee extension. An amputation above-the-knee involves removing this joint entirely, requiring a prosthetic leg that also incorporates a microprocessor-controlled prosthetic knee . It has been demonstrated in other studies such as (Wong et al. Microprocessor knees are a type of knee prosthetic that works with a computer This type of technology allows patients to perform activities that require more physical effort than usual, such as climbing or going up a hill. i am confused to select the prosthesis depending on conditions hereGenium is out of question.when C Leg 4 is having many good features why many put other knee joints ahead itconfused to decide on onehelp me out, Hello Dhoni, Hence, the objectives of this investigation are to assess the biomechanical differences resulting from the incorporation of an embedded system into lower limb prostheses, and in doing so provide comment on the user group that benefits with the greatest efficacy. (2002). Anthropometric approximation of body weight in unresponsive stroke patients. J Neurol Neurosurg Psychiatry 78(12): 1331-1336. Evaluation of Function, Performance, and Preference as Transfemoral Amputees Transition From Mechanical to Microprocessor Control of the Prosthetic Knee. Archives of Physical Medicine and Rehabilitation 88(2): 207-217. Also, I welcome everyone to share their experience with other prosthetic knees, such as Pli and other high end knees. I have been testing prosthetic knee joints such as Orthomobility 's innovative VGK Very Good Knee", which I compare to Otto Bock 's 3R80 mechanical knee and Ottobock's microprocesser C-Leg knee, as well as Otto Bock's electronic Genium knee. The average BMR for the research participants was 7.21.0MJ/d. MCP feet have a hydraulic ankle that is controlled through computers and programming. However, crossover group results were not normally distributed, and inter-subject group results were compared using the Kruskal-Wallis non-parametric test in both instances the null hypothesis was tested at a significance of 1%. I will test the Very Good Knee Short Transfemoral (VGK-S) in a week and see how it feels, weights the same as the C-Leg but all the weight is above the knee, I hope that makes a big difference. Microprocessor Knees Currently Available at SPS. There are a lot of considerations including build height, whether you are happy with an Ottobock foot (which I wasnt because I wear an Accent with adjustable heel), whether you have an iPhone or Android (yes, seriously the Rheo 3 app is iPhone only, the C-leg app (Cockpit) is Android only). Im new to MPKs. Cost utility analysis of knee prosthesis with complete microprocessor control (C-leg) compared with mechanical technology in trans-femoral amputees. Eur J Health Econ 10(1): 47-55. Furthermore, participants B & F supported themselves with the handrail wearing the non-MCPK, and did not do so wearing the MCPK. This is still a safe and stable knee to use. In turn, this leads to reduced mechanical energy expenditure during swing at SSWS, as shown in the results (Figure 5). When you take a step and put weight on your foot, your knee flexes a little, acting like a shock absorber. The C-Leg 4, according to my information, is very much like Ottobocks Genium knee. Subsequently, other knees were developed with embedded systems such as the Otto bock C-Leg, and the Blatchfords Orion knee, which also provided stance phase functionality (Hafner et al. In the past 15 yr, prosthetic technology has progressed to microprocessor (MP)-controlled fluid stance as well as stance and swing control mechanisms to overcome the inverse relationship between stability and support of function inherent in non-MP-controlled prosthetic knees (NMPKs). The knee joint is the world's first fitting solution of the latest technology specifically for the needs of less active people - as a leg prosthesis the Kenevo sets a new global standard. It adjusts the hydraulic resistance so the . Moreover, Charge socket is located such that even a few rain drops could cause damage. The polycentric (4-axis) design of the ALLUX 2 knee delivers intrinsic geometrical stability in extension and lets the leg swing through more easily. Therefore, to investigate the mechanism behind the mechanical power absorbed by the prosthetic knee during swing when walking from the level to an inclined plane and vice versa, the power absorbed by the knee was correlated with the SSWS. Additionally, the unrestricted (K3) ambulator participant A also experienced a significantly reduced hip musculature extension moment on initial contact. All recruited participants were classed as K2 (restricted) or K3 (unrestricted) community ambulators, according to the Medicare Functional Classification Level (MFCL), as described in Gailey et al. The Prosthesis Evaluation Questionnaire (PEQ) addendum (PEQ-A) is a self-administered questionnaire to quantify balance confidence, concentration, stumbles, and falls. The first commercially available microprocessor knee was, , which activated during the swing phase. I just got the Endolite Linx system (I am a bilateral through the knee amputee by the way.) it is interesting to see the results and compare them with my own. The gait cycle is divided into two major phases: stance phase and swing phase. Hi Carl, just a comment on these knees: I had switched to a 3R80 (old model) after having used a C-Leg for a number of years. Proper documentation by Prosthetist and Ordering Physician. Regarding mobility, satisfaction, and quality of life, the study reported relative parity among all four devices. In a motor-powered knee, knee extension is 'powered' for standing up from sitting and controlled resistance is provided when sitting down. Each MPK to be used in this study is FDA approved. Required fields are marked *. Ive used 4-bar knees my whole life and was wonder does anyone have feedback on them? However, it should be in stance mode, which is a relatively high resistance to bending. Microprocessor Knee Comparison The most recent analysis of microprocessor knees comes from a 2020 OASIS 1 study by Hanger Clinic, which compared Ottobocks C-Leg, Blatchfords Orion, Proteors Pli, and ssurs Rheo. Only restricted by the socket! There are two categories of prosthetic knees: mechanical control knees and microprocessor control knees. Left AKA here since 2 years. In this study, a novel hybrid active . This document addresses the use of a microprocessor controlled knee-ankle-foot orthosis (for example, the C-Brace , Ottobock HealthCare LP, Austin, TX) that provides support for individuals with lower extremity weakness.This microprocessor controlled device is a stance and swing phase control orthosis (SSCO) intended to augment the function of individuals with peripheral or central . Mechanical Features. This is non-microprocessor, but having a lot of advantages (such as waterproof, no need for charging), and yet, it is a CONTROLLED hydraulic unit, being able to adjust hydraulic resistance according to the situation (weight, temperature, etc.). yes, to be activated with a special 3-times tipping on forefoot. Using advanced algorithms, the Power Knee detects the movement patterns of a human, learns and regulates itself to the cadence and speed of the user in real-time. MPK prostheses from all manufacturers will be considered appropriate for testing. However, during the late 1990s the Blatchfords Intelligent Prosthesis (IP) was developed, which incorporated an embedded system to control swing phase. I am an Indian, 25 yr old AKA (5 inches above knee) so I consider its a long stump.its been one month since I became an amputee(29/10/2017). Mechanical, with innovative autoadaptive fluidics control, Electronic, with more sensors than C-Leg, being able to adjust to more different situations. Lorenz, M. W., et al. The continuous monitoring and control of fluid allows the processor to make adjustments in resistance so you can walk more efficiently at various speeds and walk more safely down ramps and stairs. Its state-of-the-art technology supports users, allowing them to feel safer and more independent than ever before. Hello Karl, I must point out however that many of the red, or negatives listed C-leg have been mitigated with the introduction of the C-4 C-leg. How quickly or easily the hinge swings is often controlled by friction, some type of hydraulic system or a locking mechanism. Several studies inspired by the IP knee discovered metabolic energy expenditure, oxygen rate, and cognitive demand were greatly reduced for users of the IP knee. Microprocessor knee (MPK) C-Leg 3C98-3 designed by Ottobock HealthCare is a microprocessor controlled knee with an integrated sensor system that controls a hydraulic unit's damping characteristics in real-time to assist in both stance and swing phases of the gait. Monday to Thursday 08:30 to 17:00 & Friday 08:30 to 16:00. Ottobock introduced the world to the very first fully microprocessor-controlled knee in 1997, theC-Legand ever since we have been dedicated to continuous improvement and advancement in mobility for above-knee amputees. When considering the justification for prescribing a microprocessor-controlled knee to individuals with transfemoral amputation, its important to review the patients insurance coverage criteria carefully. Ive only had the problems this year so maybe the previous models were stiffer. In my offtime, I was a biker and fisherman in SE Louisiana, neither of which I could use the leg for. flex foot or equivalent. If you think about what we call the gait cycle, it makes more sense. Can i ask all you guys how you all can afford such a prosthesis? How quickly or easily that hinge swings is typically controlled by friction, or by a hydraulic or locking mechanism. The daily challenges that are faced by amputees all over the world are now a thing of the past. In some cases, artificial intelligence allows the MPK to adapt to the user's movements in different activities. Energy expenditure and activity of transfemoral amputees using mechanical and microprocessor-controlled prosthetic knees. Arch Phys Med Rehabil 89(7): 1380-1385. Engine Gas/Electric I-4 2.5 L/152. In spite of all of the amazing inventions and constant tweaks and improvements, the perfect prosthetic knee has yet to be invented; otherwise, there wouldn't be over 100 different designs on the market. 17.5 Gal. No! I had been using a C-Leg for many years, but later experienced that I could do much better with a 3R80, simply because of the weight! Just a general update as of 2017 they are now prescribing Micro Processor Knees on the NHS to certain patients. 2017). I was lucky enough to get changed out to a 3R80 knee last Friday which my prosthetist was kind enough to arrange for me. However, this study was not independent and focused on three participants who already used an Otto bock Genium knee. Does anyone know anything about the Endolite Linx? Connect with your sales account manager to inquire about SPS MPK comparison chart. Enter the HCPCS codes into the SPS Online Store search bar or use the buttons on the home page to quickly find PDAC-approved devices. Microprocessor knee analyses to date have been primarily limited to microprocessor knees as a category rather than comparisons across different models. The swing phase is when your foot is in the air and swinging forward. A key component for the transfemoral prosthetic user is the choice of knee mechanism. Gait and balance of transfemoral amputees using passive mechanical and microprocessor-controlled prosthetic knees. Gait & Posture 26(1): 489-493. Kaufman, K. R., et al. Is the devices weight, battery life, water-resistance, or user modes appropriate for the patients day-to-day activities? If you have worn a mechanical knee for years, you may have to unlearn some compensating motions to achieve a smoother walking movement. As the leading manufacturer of microprocessor controlled knees, Ottobock has had nearly two decades of experience in this field. Hence, both the hip and knee moments on initial contact were compared during level, slope and stair ambulation. (Zahedi et al. I m using now a C-Leg that I purchased on Ebay and works well and it is very safe, the problem is the weight. knee is relatively stiff. Many amputees do not really inform themselves, and often the most expensive product appears to be the best, which is certainly not the case. (2019). With previous 3R80 model, foot goes up. The prices of most microprocessor knees are dictated by Medicare/Medicaid reimbursement rates, which is why there are so many knees in the $30,000 to $50,000 US range. TheKenevofocuses clearly on safety. Mechanical knees may not be as responsive as microprocessor knees. Very bad. I understand that every amputee has his or her own needs that may be different from mine, so it will be interesting to learn from you. U.S. Department of Health and Human Services, The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. The TDEE was higher when the participants wore the microprocessor-controlled knee compared with the mechanical prosthesis (14.1 vs 13.0MJ/d, respectively) . Stance control active, knee is relatively stiff. Considering the high relative cost, there has been debate about the efficacy of MCPKs compared to non-microprocessor-controlled knees (non-MCPKs). Your prosthetic system will be unique to you and your needs. According to Medicare, the most prescribed mechanical prosthesis for above-knee amputees with a medium to high activity level is the Mauch SNS hydraulic knee (or its equivalent), 10 which was first marketed in 1968. When searching for a microprocessor knee for a patient, the most valuable consideration is whether the devices features complement the users lifestyle. It also has a jog mode but I have not testen it due to problems with my other leg. The knees internal computer (microprocessor) controls an internal fluid, which may be hydraulic or pneumatic. Manufacturers claim that this facilitates greater user control over the knee resistance mechanism, because, the embedded system can tell when the heel or toe is being loaded and allows the control system to maintain a high or reduced knee stability according to user settings. Gailey, R. S., et al. Save my name, email, and website in this browser for the next time I comment. I really love my Kenevo, it is nice, stable and lightweight but it lacks speed (2mph max). The participants were asked to ambulate in two crossover groups in an indoor laboratory environment while wearing, an MCPK (Blatchfords Orion) and a non-MCPK (Otto Bock 3R80), which were incorporated into their prosthesis during level, ramp, and stair ambulation activities. Interior Black. All statistical evaluations were made using the MATLAB, and it was found that all individual intra-subject results, were found to be normally distributed, thus were compared using the analysis of variance (ANOVA). Stance control for above-knee artifical legs design consideration in the S-N-S Knee. Bulletin of Prosthetics Research. Lastly, while the objective outcomes did not reveal any difference for participant C, observation of upper postural compensations reveal reduced trunk flexion, and shoulder hyperextension to maintain a stable MCPK (Figure 2). Research, Mechanical knees use friction, hydraulics, pneumatics or a locking mechanism to control the flexion and extension. Kev, I have read and re-read your great info several times since becoming an Above Knee amputee 3 yrs agobeing a younger(early 40s ) guy I really wanted to pick a good kneeI found your view on knees similiar to how I think..I prefere simple,reliable and as light as reasonable..I got a polycentric at first but I also felt limited in activity for daily use( i.e., having to walk downhill was tough)..since I am ex-military with other injuries I am provided with options for electronic knees, but even after testing the C-leg and the Genium X3 I still decided to go with the 3R80 and 2yrs later zero regrets..I really researched the VGK based on your info and it would have been my second choiceI love the stance control, without the issues of electric knees..with electrics I was afraid to forget to charge it and worried if I went camping for several days without a charge..plus any adjustment reqquires going to the office to hook it to a computer, I did demo and have the option of the Genium X3 but no electronics can be really 100% waterproofjust wanted to let you know I found your website and research very helpfulit is nice to see someone with my view about non-electricsit seems everyone else prefers them, but there are some definate disadvantages to them that can get overlooked, Hi Shaun, My C-Leg is the original from 2004. During ramp descent, the inter-subject outcomes did not reveal that there was a significant different (P>0.05) of either the prosthetic knee moment, or hip moment on the prosthetic side. Your microprocessor knee will be programmed to your gait (your prosthetist will do this after having you walk in your new knee system). The innovation improved ambulation on uneven terrain, stairs, and slopes. The effect that energy storage and return feet have on the propulsion of the body: A pilot study. Journal of Engineering in Medicine. The choice of knees is between the Rheo 3, C-leg (with Ottobock foot), Orion 3 and Plie 3. Unfortunately, mechanical devices cannot fully replace the anatomical knee in terms of multipurpose without undesirable side effects. 2015) that it is clinically relevant that the magnitude of the hip and knee extension moment on initial contact is considered as it indicates the level of confidence that the user has with their prosthesis. This research examined the influence of microprocessor and mechanical control of the prosthetic knee in functional, preferential, and performance outcomes in transfemoral amputees. Microprocessor-controlled knee prostheses can lock the joint in stance, preventing the knee from collapsing as the user loads it 11,12. The result of a collaboration between the US military and Ottobock, theGenium X3is quite simply the worlds most technologically advanced microprocessor prosthetic leg. I had a chat with my prosthetist and she confirmed that NHS England will be auditing centres to make sure they are prescribing appropriately. Drive over to Platinum Ford and test drive this Blue 2023 Ford Mustang! Would require adjusting a screw setting to compensate. Digital Signal Processor; . swapping from a Endolite KX06 to Very Good Knee (VGK) in few days poss couple weeks. i agree i have to careful which shoes i buy and which shoes for where but what i dont agree with from my trials is that i found the Geniunm to be brilliant i could walk down slopes more confidently walk using less energy, unfortunately in England they dont prescribe microprocessor knees on the NHS. Different situations even a few rain drops could cause damage stairs, and be... And extension safe and stable knee to use foot ), Orion 3 and Plie 3 was, which! Entirely, requiring a prosthetic leg responsive as microprocessor knees commercially available microprocessor knee to... We call the gait cycle is divided into two major phases: stance phase and swing phase the... Rehabil 89 ( 7 ): 207-217 the knee from collapsing as the user loads 11,12. Got the Endolite Linx system ( I am a bilateral through the from... They want without fear of stumbles or falls to arrange for me that energy and. Some cases, artificial intelligence allows the MPK to be activated with special... Special 3-times tipping on forefoot with your sales account manager to inquire about SPS MPK chart... Respectively ) tipping on forefoot my own hence, both the hip and knee moments initial! It lacks speed ( 2mph max ) demonstrated in other studies such as ( et. And put weight on your foot, your knee flexes a little, acting like shock. 88 ( 2 ): 47-55 moreover, Charge socket is located that... Feet have on the propulsion of the past testen it due to problems with my other leg touch with UK. Charge socket is located such that even a few rain drops could cause damage, stable and lightweight it... Knee in terms of multipurpose without undesirable side effects cycle, it is to... Of knee mechanism a biker and fisherman in SE Louisiana, neither of which I could the... Does anyone have feedback on them walking movement considered appropriate for testing leading manufacturer of microprocessor controlled knees, as..., Orion 3 and Plie 3 and Rehabilitation 88 ( 2 ): 207-217 is a high! Life and was wonder does anyone have feedback on them in this browser for the next time I comment microprocessor-controlled! An Otto bock Genium knee during swing at SSWS, as shown in the results and compare with... To adapt to the user & # x27 ; s movements in different activities it lacks (... Will be auditing centres to make sure they are prescribing appropriately searching for a microprocessor for... And Preference as transfemoral amputees using passive mechanical and microprocessor-controlled prosthetic knee through computers and programming this field 08:30 16:00..., you may have to unlearn some compensating motions to achieve a smoother walking movement the... A few rain drops could cause damage gait & Posture 26 ( 1:. And more independent than ever before they are now a thing of the.. Knee in terms of multipurpose without undesirable side effects next time I.! Smoother walking movement artificial intelligence allows the MPK to adapt to the user loads it...., which is a relatively high resistance to bending analysis of knee with. Call the gait cycle, it makes more sense a general update as 2017... Considering the high relative cost, there has been debate about the efficacy MCPKs... Fully replace the anatomical knee in terms of multipurpose without undesirable side effects to Platinum Ford and test this! With innovative autoadaptive fluidics control, Electronic, with innovative autoadaptive fluidics control, Electronic, with more than. Controlled through computers and programming which my prosthetist and she confirmed that microprocessor knee vs mechanical knee England will be unique to and... Prosthetic knees, Ottobock has had nearly two decades of experience in this browser the. To control the flexion and extension challenges that are faced by amputees all over the world are now Micro! Studies such as Pli and other high end knees 78 ( 12 ): 207-217,... An internal fluid, which activated during the observation period a knee component change continual. Over the world are now prescribing Micro Processor knees on the home page to quickly find PDAC-approved.! Vgk ) in few days poss couple weeks efficacy of MCPKs compared non-microprocessor-controlled. Mechanical, with innovative autoadaptive fluidics control, Electronic, with more sensors C-leg... Had a chat with my prosthetist and she confirmed that NHS England will be appropriate! C-Leg, being able to adjust to more different situations have not testen due... Prescribing appropriately was higher when the participants wore the microprocessor-controlled knee prostheses microprocessor knee vs mechanical knee lock joint... Prosthesis ( 14.1 vs 13.0MJ/d, respectively ) hydraulicor pneumatic the buttons on the propulsion of body. After a knee component change showed continual improvement during microprocessor knee vs mechanical knee swing phase B. Of multipurpose without undesirable side effects extension moment on initial contact demonstrated in other studies such (. 1 ): 1331-1336 between the Rheo 3, C-leg ( with Ottobock UK by completing the form! Knees use friction, or by a hydraulic or pneumatic controls the effect that energy storage and return have! Only had the problems this year so maybe the previous models were stiffer prosthetic system be! The study reported relative parity among all four devices, being able to adjust to different... And your needs and return feet have a hydraulic ankle that is controlled through microprocessor knee vs mechanical knee programming... Get in touch with Ottobock UK by completing the enquiry form below a locking mechanism, theGenium X3is quite the. Med Rehabil 89 ( 7 ): 1331-1336 BMR for the patients day-to-day?. Knee prostheses can lock the joint in stance, preventing the knee amputee by the way. intelligence allows MPK! High end knees that also incorporates a microprocessor-controlled prosthetic knees, such as ( et... Study that evaluated performance repeatedly after a knee component change showed continual improvement during the observation.... All can afford such a prosthesis and programming your knee flexes a,! J Neurol Neurosurg Psychiatry 78 ( 12 ): 207-217 uneven terrain, stairs, and quality of,. Three participants who already used an Otto bock Genium knee all you guys how you all afford... A microprocessor knee analyses to date have been primarily limited to microprocessor control knees and microprocessor control ( C-leg compared... It 11,12 Rheo 3 microprocessor knee vs mechanical knee C-leg ( with Ottobock foot ), 3! At SSWS, as shown in the S-N-S knee prosthesis ( 14.1 vs 13.0MJ/d, respectively ) participants B F. Also has a jog mode but I have not testen it due to problems with my own leads reduced. Use the leg for, some type of hydraulic system or a mechanism. Thegenium X3is quite simply the worlds most technologically advanced microprocessor prosthetic leg also... Friday which my prosthetist and she confirmed that NHS England will be auditing centres to make they. Only had the problems this year so maybe the previous models were.. About what we call the gait cycle, it makes more sense the hinge swings typically. Out to a 3R80 knee last Friday which my prosthetist and she confirmed that NHS England will considered. Some cases, artificial intelligence allows the MPK to adapt to the user loads it 11,12 et al as pneumatic. Computers and programming its stance control for above-knee artifical legs design consideration in results... In stance, preventing the knee from collapsing as the user loads it 11,12 more confidently so they can wherever. Connect with your sales account manager to inquire about SPS MPK comparison chart enough! Quickly or easily that hinge swings is typically controlled by friction, or user modes for... ( non-MCPKs ) moments on initial contact were compared during level, slope and stair ambulation an. England will be unique to you and your needs allows the MPK to be activated with a special 3-times on. They are now prescribing Micro Processor knees on the propulsion of the body: a pilot study allows MPK... Microprocessor control ( C-leg ) compared with mechanical technology in trans-femoral amputees to non-microprocessor-controlled (! Already used an Otto bock Genium knee, stairs, and Preference as transfemoral amputees passive! And put weight on your foot is in the results and compare them with my leg! Showed continual improvement during the swing phase unrestricted ( K3 ) ambulator participant a also experienced a significantly reduced musculature... Efficacy of MCPKs compared to non-microprocessor-controlled knees ( non-MCPKs ) MCPKs compared to non-microprocessor-controlled knees ( non-MCPKs.! Approximation of body weight in unresponsive stroke patients system ( I am a bilateral the... In trans-femoral amputees prosthetic knee prosthesis ( 14.1 vs 13.0MJ/d, respectively ) and. Side effects interesting to see the results and compare them with my prosthetist kind! Confirmed that NHS England will be unique to you and your needs microprocessor... Of knees is between the Rheo 3, C-leg ( with Ottobock UK by the... Leg that also incorporates a microprocessor-controlled prosthetic knee it looses its stance control function pilot study into two phases! Mechanical knee for years, you may have to unlearn some compensating to. Cases, artificial intelligence allows the MPK to be used in this was... More independent than ever before prosthetic system will be unique to you and your needs the problems year., your knee flexes a little, acting like a shock absorber above-the-knee removing... Knee for years, you may have to unlearn some compensating motions achieve. Ive only had the problems this year so maybe the previous models were stiffer faced by all... Amputees using mechanical and microprocessor-controlled prosthetic knee modes appropriate for testing X3is quite simply the worlds most technologically advanced prosthetic... Debate about the efficacy of MCPKs compared to non-microprocessor-controlled knees ( non-MCPKs ) comparison!, participants B & F supported themselves with the mechanical prosthesis ( vs! Days poss couple weeks used 4-bar knees my whole life and was wonder does anyone have feedback on?.
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