Most likely diagnosis: Kienböck disease - avascular necrosis (osteonecrosis) of the lunate in the right wrist, with sclerosis, flattening/collapse, and fragmentation of the lunate.

The ulna also appears relatively short compared with the radius, termed negative ulnar variance, a common associated finding. The extent of lunate collapse may represent an advanced stage, approximately Lichtman stage III, but staging needs a true lateral radiograph and usually MRI/CT. Textbook descriptions note that Kienböck disease progresses from lunate sclerosis to collapse and may be associated with an ulnar-minus wrist (Miller's Review of Orthopaedics, p. 918-931).

There also appears to be a small linear radiopaque foreign body in the ulnar soft tissues near the base of the fifth metacarpal, possibly a needle fragment or other metallic object.

Please have this formally reported by a radiologist/hand or orthopedic surgeon. MRI is useful to assess lunate viability and CT can define collapse and surgical planning.