Skip to content
Nolan Horner, MD

01 — Expertise

Shoulder

Fellowship training in shoulder surgery at Rush University Medical Center informs Dr. Horner's evaluation and treatment of shoulder pain, instability and loss of function.

Anatomical model of the shoulder joint

Credentials and training

  • Board certified

    Orthopedic surgery

  • Fellowship trained

    Sports medicine & shoulder, Rush University Medical Center

  • Residency

    Orthopedic surgery, McMaster University

  • Professional teams

    Chicago Bulls, White Sox and Fire experience

  • Research

    Over 100 peer-reviewed publications

More about Dr. HornerResearch and academic workPatient reviews

Approach to care

Shoulder problems are rarely identical. Evaluation begins with history and examination, supported by imaging when it changes the plan, so that treatment is matched to the specific structure involved and to the demands the shoulder has to meet.

Non-operative care — activity modification, targeted rehabilitation and injections where appropriate — is considered first when the evidence supports it. When surgery is indicated, arthroscopic and minimally invasive techniques are used where they are appropriate for the patient and the problem.

Rehabilitation is planned alongside surgery rather than after it, with protocols shared with the patient and their therapist.

Areas of focus

  • Rotator cuff injury
  • Shoulder instability and dislocation
  • Labral injury
  • Shoulder arthritis
  • Shoulder replacement
  • Arthroscopic shoulder surgery
  • Shoulder reconstruction

Evaluating shoulder pain and instability

Shoulder complaints separate into a few broad patterns, and identifying the pattern is most of the work. Pain at night and with overhead reach suggests the rotator cuff. A sense that the shoulder shifts, slips or has come out of place points toward instability or labral injury. Stiffness that limits motion even when someone else moves the arm suggests a frozen or arthritic shoulder.

Examination tests strength of each cuff tendon, range of motion in several planes, stability in the positions where the shoulder feels vulnerable, and the contribution of the scapula and neck. Radiographs are standard; MRI or CT is added when it will change what is recommended.

  • Night pain and weakness with overhead reach — rotator cuff
  • Slipping, apprehension or prior dislocation — instability and labral injury
  • Global stiffness — adhesive capsulitis or glenohumeral arthritis
  • Scapular control and cervical spine as contributing sources

Non-operative care

Many rotator cuff problems, most cases of adhesive capsulitis and a substantial number of first-time dislocations in lower-demand patients are managed without surgery. Rehabilitation focused on cuff and scapular mechanics is the main treatment, supported by activity modification and, where appropriate, a corticosteroid injection to make therapy tolerable.

Non-operative treatment is given a fair trial with a defined checkpoint rather than being extended indefinitely. If function is not improving by that point, the plan is revisited.

Surgical options

Fellowship training in shoulder surgery at Rush University Medical Center covers the full range of procedures, from arthroscopic rotator cuff repair and labral repair to stabilization for recurrent instability and anatomic or reverse shoulder replacement for arthritis and irreparable cuff disease.

The choice among these depends on the tissue quality, the pattern of injury, bone loss where instability is involved, and what the patient needs the shoulder to do. Arthroscopic approaches are used when they serve the patient; a larger procedure is recommended when it is the more durable answer rather than avoided for its own sake.

  • Arthroscopic rotator cuff repair
  • Labral repair and shoulder stabilization
  • Biceps tenodesis
  • Anatomic and reverse total shoulder replacement
  • Revision and reconstruction after prior surgery

Recovery expectations

Shoulder recovery is slower than most patients expect, and setting that expectation up front is part of the plan. Rotator cuff repair generally involves a period of sling protection while the tendon heals, followed by staged motion and then strengthening; shoulder replacement usually allows earlier comfortable motion but still takes months to reach full strength.

Written protocols are shared with the patient and their therapist, and the plan is adjusted at follow-up based on how the shoulder is actually progressing.

Related care

Office visits in Oak Brook (Mondays), St. Charles (Thursdays) and Little Village (Wednesdays), 8:00 AM–4:00 PM.

Common questions

Does every rotator cuff tear need repair?

No. Many partial and chronic degenerative tears improve with therapy. Repair is considered more strongly for acute traumatic tears, meaningful weakness, and tears that fail a fair trial of rehabilitation.

What is the difference between anatomic and reverse shoulder replacement?

An anatomic replacement resurfaces the joint as it is built and requires a functioning rotator cuff. A reverse replacement changes the mechanics so the deltoid powers the shoulder, which is what makes it useful when the cuff is irreparable.

Will I be in a sling after surgery?

Usually, for rotator cuff repair, labral repair and stabilization. The duration depends on what was repaired and is set out in the written protocol you receive before surgery.

Can shoulder pain come from the neck?

Yes, and it is a frequent source of confusion. The examination is designed to distinguish cervical referred pain from a true shoulder problem before treatment starts.

Call the officeBook a visit