While recoil force can be measured and quantified,
felt recoil, and how it's perceived, is such a subjective thing that opinions can vary quite a bit from one person to another.
I've been asked a similar question by a number of our folks when it comes to the G26 & G27, though.
Rather than try to describe the difference in felt recoil, however, I always try to arrange for them to shoot both models. I usually use 180gr loads for the G27 and 147gr JHP & 124gr +P for the G26.
Some folks express that they don't feel a lot of difference ... and some say there's a lot of difference.
More folks seem inclined to choose the G26 than choose the G27. Not exactly what I might call a significant majority, but a noticeable one.
Many of those folks offer an opinion that the G27 has 'more recoil', and is at least a little 'harder to control'. Some essentially describe the G26 as being more controllable, mostly meaning they find it faster & easier to make follow-up shots with the G26. They seem to prefer the recoil recovery & recoil management characteristics of the G26 to the G27.
The folks that choose the G27 seem to often express a desire for 'a more powerful caliber', and have good grip and arm strength.
Some of the folks who choose the G26, however, also possess what I'd characterize as good handgun shooting skills and experience and good hand/arm strength ... but simply prefer the G26.
I'm one of those folks, FWIW. I find I prefer the felt recoil & recoil management of the G26, even when loaded with +P+ loads, to my G27 when loaded with anything available in the caliber.
As well as I can shoot my G27 (and I've fired upwards of about 9K rounds through mine) in our qualification courses-of-fire and regular training/practice, I can generally do better, or at least faster, when using my G26 in the same conditions. I can shoot more rounds over the course of a day's practice, with less fatigue, when using the G26, too.
I have experienced some feeding/functioning issues with my G27 over the last few years which I've attributed to factors ranging from ammunition-related, magazine related & grip-related (grip stability; such as when I felt my wrist had momentarily 'relaxed' and a feeding failure occurred). Do you think the nature of your injury might cause you to experience a diminished amount of control regarding your grip?
I've experienced no such similar issues with my G26 during the course of shooting approx the same number of rounds in a slightly longer time period, and that's been using standard pressure, +P and +P+ loads. (Although if I allow my wrist/grip to momentarily relax when shooting my G26 I may occasionally experience a bit of an erratic ejection pattern. No feeding/chambering issues, though.)
Due to a wrist injury, I can't handle the violent recoil of a .357 Magnum. I'm OK with 9MM and .45 ACP recoil.
Something for you to carefully consider, especially after having received medical advice from your doctor/health care professional. I've experienced a previous concern related to a medical condition affecting my hand/wrist, so I can empathize to some degree.
Renting from the local indoor range isn't practical.
Practical, or possible? Availability (of G27)? Convenience? Cost?
It would be a shame to find you've wasted the money on a G27, as well as perhaps re-injured yourself or aggravated your existing injury.
Dunno. Only you can determine what's best and most suitable for your desires and circumstances.
Good luck, though. I hope it works out for you.