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| Today’s Top Story
Study: Hip Muscle Recovery after THA for OA in Patients with Acetabular Dysplasia
A study published in the Journal of the AAOS ® found substantial atrophy and fatty infiltration of the hip muscles persisted at one year after unilateral total hip arthroplasty (THA) for osteoarthritis (OA) with acetabular dysplasia. Fifty-one female patients were included. In the operated limb, the gluteus medius, iliopsoas, and rectus abdominis demonstrated significantly increased cross-sectional area (CSA) and muscle density at one year postoperatively. However, CSA and muscle density in the gluteus maximus/minimus, piriformis, and iliopsoas were significantly lower than levels in the nonoperated limb
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| In Other News
Study: Delaying Surgery for Atraumatic RCT Is Not Associated with Increased Risk of Retear
A retrospective study published in the Journal of Shoulder & Elbow Surgery did not find significant differences in functional outcomes with delaying surgery for atraumatic, degenerative rotator cuff tears (RCTs) for one year or more. In total, 143 patients were divided based on surgical timing, either within one year or after one year of symptom onset. At one year postoperatively, there were no significant differences between groups in rates of retear, reoperation, range of motion, strength, Visual Analog Scale pain scores, or Subjective Shoulder Value scores. Surgery within one year led to significantly greater improvement in supraspinatus strength.
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| Study: Comparable Outcomes with Cemented or Cementless TKA in Patients with BMI ≥35
In patients with a BMI ≥35, cemented and cementless total knee arthroplasty (TKA) led to similar clinical outcomes and high seven-year survivorship rates (99.0 percent versus 99.5 percent, respectively), according to a study published online in The Journal of Arthroplasty. A series of 406 primary cementless TKAs were matched to 406 cemented TKAs with the same implant. Both groups had a similar mean BMI at baseline and demonstrated similar improvements in the Knee Injury and Osteoarthritis Outcome Score for Joint Replacement and Short Form-12 assessments at two years.
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| Study: Visualization of Distal Humerus with Proximal Ulna Osteotomy versus Olecranon Osteotomy
A study published online in the Journal of Hand Surgery reported that proximal ulna osteotomy (PUO) for complex distal humerus (DH) fractures improves visualization of the DH articular surface compared with transverse olecranon osteotomy (OO). Eighteen cadaveric elbows (nine matched pairs) underwent PUO or OO, followed by three-dimensional scanning. The PUO technique led to 87.6 percent visualization of the total DH surface area, compared with 65.6 percent using OO. Visualization of the trochlea and capitellum surface areas and goniometric angles were also greater with PUO versus OO.
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| Study: Favorable Outcomes with Early Weightbearing after Conservative Treatment for Acute Achilles Tendon Rupture
A systematic review and meta-analysis of nine randomized controlled trials reported similar functional and patient-reported outcomes with early weightbearing (within four weeks) after conservative management of acute Achilles tendon rupture (ATR) compared with late weightbearing (after four weeks). This study was published online in Injury. In total, 1,046 patients were included. Between early and late weightbearing groups, there were no significant differences in risk of re-rupture, return to preinjury sport activity, or adverse events. ATR Scores were also comparable between groups.
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| AAOS Now
Jon Meacham to Headline Your Academy at the AAOS 2022 Annual Meeting
Jon Meacham, noted historian, writer, and commentator, will be the Presidential Guest Speaker at the AAOS 2022 Annual Meeting, taking place March 22–26 in Chicago. His talk, at the conclusion of the Your Academy on March 24, will explore the topic of “The Art of Leadership: Lessons from the American Presidency.” Speaking about this selection, AAOS President Daniel K. Guy, MD, FAAOS, noted that he “wanted to offer our colleagues and guests something interesting and memorable from a gifted speaker.”
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| Your AAOS
Call for Content: Submit an Article for AAOS Now
Do you have timely research or an interesting story to tell? AAOS Now is seeking editorial submissions from orthopaedic surgeons and orthopaedic- and practice-related product and service providers who qualify as subject matter experts. The magazine features various formats and opportunities to highlight your information or topic. AAOS Now encourages interested authors to contact staff prior to writing in order to review suggestions and provide feedback. Submit an article suggestion online or email AAOS Now Publisher Dennis Coyle at coyle@aaos.org.
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