Clinical Orthopaedics and Related Research

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Clinical Orthopaedics and Related Research Peer reviewed orthopaedic journal

Devoted to disseminating new and important orthopaedic knowledge, Clinical Orthopaedics and Related Research® is a leading peer-reviewed orthopaedic journal and a publication of The Association of Bone and Joint Surgeons®. CORR® brings readers the latest clinical and basic research and informed opinions that shape today's orthopaedic practice, thereby providing an opportunity to practice evidence-based medicine. With contributions from leading clinicians and researchers around the world we aim to be the premier journal providing an international perspective advancing knowledge of the musculoskeletal system.

"Resident selection is too important to be guided solely by intuition, tradition, and anecdote, (yet) we have built an e...
10/09/2026

"Resident selection is too important to be guided solely by intuition, tradition, and anecdote, (yet) we have built an elaborate system around assumptions that are surprisingly underexamined," writes Joe Bernstein MD in his latest column. "It may now be time to study it with the same rigor we bring to the questions we ask in every other part of orthopaedics. If we are not willing to do that, we should stop congratulating ourselves for asking how well we are still doing."

After Dr. Bernstein "philosophically tackles" the question, "Are we still recruiting the best and the brightest?”, commentators Terrance Peabody MD and Safdar Khan MD weigh in to get the last words.

Read "Not the Last Word: The Epistemology, Metaphysics, and Practical Philosophy of Resident Selection" here: https://ow.ly/L3Pf50ZW4fB

In a direct comparison study of patients who underwent reconstruction after tumor resection, Aksoy et al. found that sal...
10/08/2026

In a direct comparison study of patients who underwent reconstruction after tumor resection, Aksoy et al. found that salvaging a failed osteoarticular allograft with a conversion megaprosthesis yielded survival and functional outcomes that were similar to those of a primary megaprosthesis.

"These findings are informative for surgeons involved in the management of bone tumors around the knee," the authors write. "Osteoarticular allografts continue to play a selective role in limb salvage and should be considered in primary reconstructions after bone tumor resection, particularly in younger patients, as a time-buying strategy for future metal reconstructions."

"Despite these contributions, important gaps remain," writes Kit Moran in a commentary. "Existing studies necessarily focus on patients who are suitable for salvage, leaving unanswered questions about early failures, allograft revisions or repairs, and patients who are not candidates for reconstruction."

Read "Do Patients Who Undergo Conversion of Failed Osteoarticular Allografts to Megaprostheses Have Worse Outcomes Than Patients Treated With Primary Megaprostheses at Initial Resection?" here: https://ow.ly/skQX50ZVC6t

Read the commentary here: https://ow.ly/qhNL50ZVC6r

📣 🔓: "A Novel Scoring System Can Estimate the Risk of Posttraumatic Osteonecrosis After Femoral Neck Fracture Fixati...
10/07/2026

📣 🔓: "A Novel Scoring System Can Estimate the Risk of Posttraumatic Osteonecrosis After Femoral Neck Fracture Fixation in Adults Younger Than 65 Years" by Bian et al.

Read the article here: https://ow.ly/XC3k50ZV5SU

When patients with chronic ankle instability were asked to perform task-based fMRI and neuromuscular assessments with th...
10/06/2026

When patients with chronic ankle instability were asked to perform task-based fMRI and neuromuscular assessments with their eyes closed, Hou et al. observed reduced activation in certain regions of the cerebellum, which was associated with delayed muscle responses and worse self-reported ankle stability.

"These findings reinforce the notion that neuromuscular deficits in chronic ankle instability are not limited to peripheral tissues but involve broader sensorimotor system dysfunction," the authors write in .

"Based on these findings, further research into ankle stability needs to move beyond simple static mechanics and muscle strengthening and incorporate the central nervous system," Gregory P. Guyton writes in a commentary.

Read "Reduced Cerebellar Activation With Eyes Closed Is Associated With Delayed Peroneal Reaction Time in Patients With Chronic Ankle Instability" here: https://ow.ly/38w450ZV5gM

Read the commentary here: https://ow.ly/MXH450ZV5gR

After finding no clinically meaningful improvements from the addition of a genicular nerve block to an ACB/IPACK for the...
10/05/2026

After finding no clinically meaningful improvements from the addition of a genicular nerve block to an ACB/IPACK for the average TKA patient, Giannakis et al. do not support its routine incorporation into pain management protocols given the financial, time, and procedural costs associated with invasive interventions.

However, "in the inpatient setting, there was a 16-hour reduction in the 75th percentile value when adding genicular nerve block, which is a clinically meaningful difference," the authors write. "This subpopulation should be explored in future research."

"Most studies, including (this one), focus on acute perioperative outcomes. Do these interventions make a difference at 30 days, 90 days, 2 years, or longer?" writes Matthew L. Webb in a commentary. "I encourage Giannakis et al. to follow their large cohort of patients (because) the question of whether superior early analgesia translates to better long-term outcomes remains unanswered."

Read "What Is the Association Between Adding Genicular Nerve Block to Adductor Canal Block and Infiltration Between the Popliteal Artery and Capsule of the Knee and Perioperative Outcomes After Primary TKA?" here: https://ow.ly/1vp550ZUGAQ

Read the commentary here: https://ow.ly/LE2a50ZUGAM

🚩Free to read through Oct. 11: The weak to moderate associations found in Aepala et al.'s systematic review reinforce th...
10/04/2026

🚩Free to read through Oct. 11: The weak to moderate associations found in Aepala et al.'s systematic review reinforce that PROMs and clinician-reported outcome measures (CROMs) are not interchangeable, and should be intentionally paired when assessing orthopaedic outcomes to capture distinct aspects of health.

"For example, a surgeon monitoring treatment response after TKA might pair the WOMAC with instrumented gait analysis or timed functional testing; after distal radius fracture fixation, besides radiographic evaluation, the DASH could be paired with grip-strength dynamometry and goniometric ROM," the authors write.

"This review arrives at the right moment to ask what this [CMS] shift toward patient-reported measurement leaves out," writes Jashvant Poeran in a commentary. "What we need now is a clear account of what each instrument is actually measuring and why we would or would not expect the two to track together. Because this is also a policy question, it should be studied as one."

Read "What Is the Relationship Between Clinician-reported and Patient-reported Outcomes in Orthopaedic Surgery?" here: https://ow.ly/7fmt50ZU7Nw

Read the CORR Insights commentary here: https://ow.ly/MfmX50ZU7NA

🚩Free to read all month: Although the recently proposed Unified PJI Criteria recommends using synovial fluid WBC count o...
10/03/2026

🚩Free to read all month: Although the recently proposed Unified PJI Criteria recommends using synovial fluid WBC count or PMN percentage as standalone rule-in tests for PJI, Parthasarathi et al. found that this would likely yield 1 in 3 false positives when they reanalyzed the data.

"The original [meta-analysis that became the subject of this study] was a sincere effort on an important question, (but) when the same evidence was analyzed with accepted statistical methods, those tests no longer held up at the proposed thresholds," senior author Carl Deirmengian explains in the Editor's Spotlight/Take 5 interview. "So the practical conclusion, at least as I read it, is that while the WBC count and PMN percentage are valuable diagnostic tests, the evidence does not support elevating them to standalone rule-in status."

"The meta-message of this month’s spotlight paper is that science isn’t a soliloquy, it’s a conversation, and each of us ought to be a part of it," writes Seth Leopold MD. "Their article demonstrates that doing this right is sweaty but important work, (and) they set an aspirational standard for what each of us can and ought to do when we see something in a journal that could, if left uncorrected, harm patients."

Read "Synovial Fluid Leukocyte Count and Differential Are Poor Standalone Rule-in Tests for Periprosthetic Joint Infection: Results of a Methodological Audit and Reanalysis of the 2025 Meta-analysis Underpinning the Unified Periprosthetic Joint Infection Criteria" here: https://ow.ly/ZTMP50ZU66k

Read the Editor's Spotlight/Take 5 interview on the study here: https://ow.ly/mv1K50ZU66l

🚩Free to read all month: We have a favor to ask of our readers. If you see a reference in that doesn’t support the cla...
10/02/2026

🚩Free to read all month: We have a favor to ask of our readers. If you see a reference in that doesn’t support the claim attributed to it, or a reference that doesn't exist at all, please send us an email.

Our journal still has a excellent team of copyeditors, senior editors, and peer reviewers. We screen papers for AI use, spot check references manually and with tools, and help authors fully disclose how they used AI-based tools in their manuscripts. These procedures help us catch hallucinated references (papers that don't exist at all) fairly well.

But hallucinated and misattributed claims—which are findings attributed to real sources that do not, in fact, support those claims—are much harder to detect. The problem is most severe in AI-assisted systematic reviews where, in our experience, about 20% to 30% of the references cited don't support the claims the authors say they do.

We believe our patients have the right to expect that the evidence base their surgeons are basing treatment decisions on is accurate and reliable. But catching every misattributed claim would require us to pull every reference in every paper, and no journal has the means or time to do this. Thus, our request to you.

"The need for professional communities to work together to ensure trustworthiness in a truth-seeking activity like surgical research is as old as the professions themselves. Articles in biomedical journals are useful only to the degree that we can trust them. And so, we’re asking for your help."

Read "Editorial: Readers Have a Role in Ensuring Our Patients Can Trust the Claims We Make" here: https://ow.ly/ioHP50ZTK1W

The October 2026 issue of is now available! In addition to our usual mix of columns, research articles, and letters to...
09/30/2026

The October 2026 issue of is now available! In addition to our usual mix of columns, research articles, and letters to the editor, the front pages of this issue will remind every reader why it is important to critically appraise the articles you read and speak up when something doesn't sound right.

Start reading now: https://ow.ly/CMhp50ZSSwg

🔓: In , Peters et al. demonstrate how a shortened decision tree version of the Patient-Rated Wrist Evaluation (the DT...
09/29/2026

🔓: In , Peters et al. demonstrate how a shortened decision tree version of the Patient-Rated Wrist Evaluation (the DT-PRWE) is a reliable alternative to the full-length version that can be completed in about 1 minute vs. 3:30 minutes.

"By preserving both pain and function subscores and reducing the number of questions, the DT-PRWE offers a practical way to assess wrist-related outcomes with less burden for patients," the authors write.

"This work supports using a chi-square automatic interaction detection (CHAID) algorithm as a practical and accessible method for PROM shortening, offering a simpler alternative to more complex approaches such as computerized adaptive testing," writes Daniel London in a commentary.

Read "What Is the Interversion Reliability and Agreement Between the Decision Tree Patient-rated Wrist Evaluation and the Full-length Version?" here: https://ow.ly/SVUY50ZSJXX

Read the commentary here: https://ow.ly/Y5iM50ZSJXR

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