Severe B2 glenoid in a 40 year old active man

An active man in his 40s presented with pain and stiffness in the left shoulder after a remote childhood injury. X-rays at the time of presentation demonstrated glenohumeral arthritis with severe posterior decentering of the humeral head on a retroverted, biconcave type B2 glenoid as shown below.

After discussion of the options, including anatomic total shoulder arthroplasty and reverse total shoulder arthroplasty, he elected to proceed with a ream run procedure (see this link).

At four years after surgery, he reported essentially full and comfortable function of his shoulder with improved active elevation from 90 degrees before surgery to 160 degrees. His radiographs at 4 years (below) show an anteriorly eccentric humeral head centered on a remodeled glenoid with radiographic space between the humeral prosthesis and the mature glenoid bone surface.

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Here are some videos that are of shoulder interest

Shoulder arthritis - what you need to know (see this link)

Shoulder arthritis - x-ray appearance (see this link)

The smooth and move for irreparable cuff tears (see this link)

The total shoulder arthroplasty (see this link).

The ream and run technique is shown in this link.

The cuff tear arthropathy arthroplasty (see this link).

The reverse total shoulder arthroplasty (see this link).