Knee Surgeon in the Lehigh Valley

Dr. Michael D. Hendel, MD, PhD is an ABOS board-certified orthopedic surgeon in Bethlehem who evaluates knee injuries in athletes and active adults across the Lehigh Valley, including meniscus tears, ACL injuries, cartilage defects, and kneecap instability. Care follows a joint-preservation approach, beginning with rehabilitation and activity modification when appropriate and considering surgery when the injury pattern and the patient's goals support it.

Michael D. Hendel, MD, PhD

Residency & Fellowship Trained at Hospital for Special Surgery — ranked No. 1 in orthopedics by U.S. News & World Report (2026–2027) · Board Certified (ABOS)

Meniscus repair, cartilage restoration, and sports knee surgery with a joint-preservation approach — trained at Hospital for Special Surgery.

Dr. Michael D. Hendel, MD, PhD, orthopedic surgeon
Residency & Fellowship Trained at Hospital for Special Surgery · Board Certified (ABOS) · Subspecialty Certified in Orthopaedic Sports Medicine · Team Physician, Reading Royals & Lehigh Valley IronPigs

Knee Surgery in Bethlehem & the Lehigh Valley

A torn meniscus, a cartilage defect, or an unstable kneecap can limit what the knee can do. Dr. Michael Hendel, MD, PhD treats the full range of sports and degenerative knee conditions with a joint-preservation philosophy learned at Hospital for Special Surgery: protect the meniscus, restore the cartilage, and keep your native knee healthy for as long as possible.

Conditions & Procedures

  • Meniscus tears — arthroscopic repair whenever the tear pattern allows (preserving the shock absorber), partial meniscectomy when it does not, and root repair for posterior root tears
  • Cartilage damage — osteochondral autograft transfer (OATS), MACI cell-based restoration, and microfracture for focal defects in younger, active patients
  • Patellar instability — MPFL reconstruction and realignment for recurring kneecap dislocation
  • Complex ligament injuries — PCL and multi-ligament reconstruction, including his published book chapter on the multi-ligament injured knee
  • Knee arthroscopy — loose bodies, debridement, and mechanical symptoms
  • Non-operative care — image-guided injections, PRP, bracing, and structured physical therapy always come first when appropriate
Repair versus removal: the meniscus protects your knee's cartilage. Removing meniscal tissue relieves symptoms quickly, but repairing it — when the tear allows — helps protect the knee against arthritis over the long term. Dr. Hendel favors repair whenever the tear pattern and tissue quality allow.

Explore the dedicated pages on meniscus tear treatment and cartilage restoration (OATS & MACI) for deeper detail on each procedure — and if a ligament injury accompanies your knee problem, review the ACL recovery timeline. Parents can also read the parent’s guide to youth sports injuries.

Every surgical patient receives a written, milestone-based rehabilitation protocol from Dr. Hendel’s library of over 100 procedure-specific plans, so you and your physical therapist always know exactly where you are and what comes next.

This information is educational and does not replace an individual evaluation. Treatment recommendations and recovery vary from patient to patient.
Patient Information

Frequently Asked Questions

Tears in the outer edge of the meniscus, where blood supply exists, occasionally settle with conservative care. Many degenerative tears improve with nonoperative care even though the tissue does not heal; tears causing locking or catching often need surgery. An MRI defines the pattern and whether repair is possible.

After partial meniscectomy, most patients walk immediately, return to desk work within days, and resume most activity in 6-8 weeks. Meniscus repair recovers more slowly — protected weight bearing early, return to sport around 4-6 months — because the repaired tissue must heal.

For focal cartilage defects in younger patients, techniques like OATS (transferring healthy cartilage plugs) and MACI (implanting your own lab-grown cartilage cells) can resurface the damaged area and may help delay the progression of joint degeneration — preserving the natural joint instead of replacing it.

Patient Experience

What Patients Can Expect

Clear Communication

Your imaging reviewed with you, every option explained, and time for all of your questions.

Honest Recommendations

Surgery is recommended only when it is the right answer — most conditions start with conservative care.

A Defined Recovery Plan

Every surgical patient leaves with a written, milestone-based rehabilitation protocol.

Contact

Schedule a Knee Evaluation

Same-day appointments are often available when Dr. Hendel is in the office. Office in Bethlehem; surgery at St. Luke's Orthopedic Hospital — West End Campus, Allentown.

Schedule Online at St. Luke’s →
Bethlehem Office
St. Luke’s Orthopedic Care — St. Luke’s North Medical Center
153 Brodhead Road, Rear Entrance
Bethlehem, PA 18017
(484) 526-1735
Get Directions →
Hours: Mon, Tue, Thu, Fri 8:00 AM–4:00 PM · Wed 8:00 AM–3:00 PM
Surgical Location
St. Luke’s Orthopedic Hospital — West End Campus
521 Cetronia Road
Allentown, PA 18104
About the Hospital →  ·  Get Directions →
Dr. Hendel performs surgery at St. Luke’s dedicated orthopedic specialty hospital on the West End campus. Allentown-area patients: see orthopedic care serving Allentown.
St. Luke’s University Health Network

Request an Appointment

Same-day appointments are often available when Dr. Hendel is in the office. Call during office hours, or schedule online through St. Luke’s at any time.

Call (484) 526-1735 or Schedule Online at St. Luke’s

Established patients can also message the care team, request refills, and view results through St. Luke’s MyChart.

Book Appointment (484) 526-1735