Final answer:
The vet is most likely to recommend hydrotherapy as a safe and non-invasive treatment for Mollie's degenerative arthritis, preserving her mobility and alleviating pain without the risks associated with hip replacement surgery.
Step-by-step explanation:
The treatment that Martina's vet is most likely to recommend for Mollie, a German Shepherd diagnosed with degenerative arthritis in her hips, is hydrotherapy.
Since joint replacement or arthroplasty is quite invasive and may pose significant risks especially for older dogs, less invasive alternatives are usually considered. Hydrotherapy is an excellent option to exercise the joints safely and alleviate pain without putting undue pressure on the joints. This treatment uses the resistance of water to help improve joint mobility, reduce pain, and strengthen muscles while minimizing the impact on the joints because of the buoyancy provided by water.
Moreover, hydrotherapy can enhance mobility and support healing processes after operations like a hip replacement. It's particularly beneficial for conditions like osteoarthritis, which involve the 'wear and tear' of the articular cartilage and can result in joint stiffness, pain, and inflammation.