Hi StovieJoe
Your question is possibly problematic in terms of a reply due to Rule 9 of these Forums:
9. Discussion of potential or actual legal proceedings is prohibited on the public discussion forums.
9.1. Public inquiries, including where IOSH is a party to the inquiry, may be discussed on the Members’ Forum.
9.2. Information that has been intentionally released, for example to alert others to a particular hazard or fact, can also be discussed in the IOSH Members’ Forum.
9.1 and 9.2 don't really seem to apply to the scenario you describe.
It appears from your posting that your wife is an employee, in which case the first question should possibly be whether her condition is a reportable disease under Regulation 8 of the Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013 The Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013 (legislation.gov.uk) where her employer would be the "responsible person" as defined in RIDDOR.
Occupational diseases
8. Where, in relation to a person at work, the responsible person receives a diagnosis of—
(a) Carpal Tunnel Syndrome, where the person’s work involves regular use of percussive or vibrating tools;
(b) cramp in the hand or forearm, where the person’s work involves prolonged periods of repetitive movement of the fingers, hand or arm;
(c)..........;
(d) .........;
(e)........... or
(f) tendonitis or tenosynovitis in the hand or forearm, where the person’s work is physically demanding and involves frequent, repetitive movements,
the responsible person must follow the reporting procedure, subject to regulations 14 and 15.
On the basis of your description it sounds like (f) would apply assuming the condition in the elbow(s) extends into the forearm(s) and is clearly linked in the diagnosis to the nature of your wife's work. (b) is less likely and (a) more unlikely.
But "diagnosis" is a defined term in RIDDOR:
"diagnosis” means a registered medical practitioner's identification (in writing, where it pertains to an employee) of—
(a) new symptoms; or
(b) symptoms which have significantly worsened;
....so you would need to check whether the occupational therapist is a "registered medical practitioner".
You have worked out for yourself that this work should have been subject to "suitable and sufficient" risk assessment, which should in turn have pointed to some measures to mitigate the risks.
When my mother was cook and caterer for similar numbers in the 1970s one of the simple things she had at her disposal was a rumbling machine which did most of the peeling of the potatoes, so the technology is not rocket science.
If this is reported under RIDDOR there is quite a good chance that the regulator would investigate for the simple reason that not many reportable diseases are reported - a mixture of the limits of what is reportable unde RIDDOR and high levels of underreporting of incidents that ARE reportable.
So, perhaps the first Q is whether the condition has been reported and if not, why not?
Feel free to private message me if you wish.