Use of the Contralateral Glenoid for Calculation of Glenoid Bone Loss: A Cadaveric Anthropometric Study

Authors:

Stephen A Parada, Jordan W Paynter, Daniel W Paré, Jessica J Amero, Judith G Kyrkos, Gehrig A Broxton, Brice G Morpeth, James W Going, Robert J Shelley, Matthew T Provencher

Abstract:

Purpose: The purpose of this study was to determine if there are significant side-to-side anthropometric differences between paired glenoids.

Methods: Forty-six matched-pair cadaver glenoids were harvested, and their glenoid heights (GHs) and glenoid widths (GWs) were measured with digital calipers. The glenoid surface area was calculated using the standard assumption that the inferior two-thirds of the glenoid is a perfect circle.

Results: There was a statistically significant difference between matched-pair GHs of 0.96 ± 3.07 mm (P = .020) and GWs of 0.46 ± 1.64 mm (P = .033). There was a significant difference of glenoid cavity area of 20.30 ± 81.53 mm2 (P = .044), or a difference of ∼3%. A total of 4 of 46 pairs of glenoids (8.6%) showed a difference in width >3 mm.

Conclusions: This study demonstrates the fallacy of use of the contralateral glenoid in measuring glenoid bone loss. Although many paired samples exhibited similar side-to-side glenoid measurements, the number of cadaveric pairs that showed differences of >3 mm was substantial. Caution should be taken when using calculation methods that include this assumption for surgical decision making, as surface area, GW, and GH were all shown to have statistically significant side-to-side differences in their measurements.

Clinical relevance: Many methods exist for measuring glenoid bone loss after anterior shoulder dislocation, but some of the current methods may be inaccurate and lead to unreliable estimations.

For the complete study: Use of the Contralateral Glenoid for Calculation of Glenoid Bone Loss: A Cadaveric Anthropometric Study

Matthew Provencher, MD

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66 reviews

James Wilson

Oct 11, 2024

by James Wilson on Matthew Provencher, MD

Senior Electronics development engineer

Wow the Steadman clinic and Doctor Matthew Provencher now that;s a super combination of expertise, experience, empathy, skill and a cherry picked staff with truly outstanding nurses and professional support staff. I was scared of shoulder surgery until I read Dr. Provencher BIO and talked to him. If your considering shoulder replacement surgery this is the place. In three weeks out now and people are amazed at my ability of movement and flexibility I have now. I love the Steadman Clinic and Dr. Matthew Provencher, He's Superman

Anne Miller

Jun 18, 2024

by Anne Miller on Matthew Provencher, MD

Grateful to Dr Provencher and his team

I am a 75-year old, active, athletic woman. Over the last few years, both of my shoulders reached a point where severe arthritis was affecting even day to day tasks. It started with one shoulder in 2021 and recently the second reverse shoulder replacement – both with Dr Provencher. Before my first one, I had received various recommendations including adjusting my lifestyle. Dr Provencher looked at my MRI and x-ray and asked what I enjoy doing and was quick to let me know I could be back to my active lifestyle soon – and he was right. He reads images faster and more accurately than any doctor I have consulted. He has many options available and if you need surgery he is the one to do it. Surgery is quick and the recovery is much easier than I anticipated. I am 10 days out from my second reverse shoulder and have no pain and gaining mobility already! My case for both shoulders was a bit more complicated due to bone integrity, severe arthritis and bicep tears. Dr Provencher has dealt innovatively with both complications and makes it seem straightforward although I know it was not. He is not only one an extraordinary surgeon, but also, a caring human being who takes the time with his patients and makes himself available if questions arise. His team is second to none – Maddy, Madison, Sam, Scott, Jasmin and in pre-op, Layla and Kevin – in terms of commitment, competence, compassion and responsiveness. Both times I have felt cared for and that resolving my situation mattered to him. Wherever you live, Dr Provencher and his team are the ones to trust. There is no need to live a compromised life!

Gene reiling

Jul 21, 2023

by Gene reiling on Matthew Provencher, MD

Success

If you are planning to see Dr Provencher ,do not hesitate ,do it. In 2018 Dr Provencher replaced my LCL. I had no complications and very little pain. I did my physical therapy as prescribed. I was able to ski 30 plus days the winter of 2019-2020. Before seeing dr Provencher I had spent a years time trying to solve my problem locally. I saw a pain specialist, orthopedic urgent care and a orthopedic surgeon. All had access to an mri done locally. It was also read by local radiologist. Pain dr gave injections as did orthopedic urgent care. No relief from pain. Orthopedic surgeon told me about arthritis, meniscus needing cleaning up and general deterioration from age. Told me to take ibuprofen for pain. At that time I reached out to Steadman Clinic. By luck of the draw I was assigned Dr Provencher. I took with me the mri that had been done locally and viewed by 3 local Drs and 1 PA. It took Dr Provencher less than a minute to tell me my problem was my LCL after viewing my mri. He told me my options . I selected surgery as I wanted to continue an active life style. It was a complete success!!

Knee | Shoulder | Joint Preservation | Arthroplasty

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