Today’s Top Story

Study Measures Effect of Comorbidity on THA and TKA Revision Risk

A study published online in BMC Musculoskeletal Disorders assessed the impact of comorbidity on short- and medium-term revision risk in total hip arthroplasty (THA) and total knee arthroplasty (TKA) patients. Data on THA (n = 17,923) and TKA (n = 49,701) patients were identified in the Catalan Arthroplasty Register. Higher comorbidity was associated with increased revision incidence at one and five years in THA patients, but only at one year in TKA patients. In TKA, deficiency anemia and liver diseases were correlated with revision; in THA, peripheral vascular disorders, metastatic cancer, and psychoses increased revision risk.

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In Other News

Study Assesses Data Differences in TSA in Registries

A study published in the July 15 issue of the Journal of the AAOS ® compared total shoulder arthroplasty (TSA) data from claims-based versus prospectively collected clinical registries. The American College of Surgeons National Surgical Quality Improvement Program (NSQIP) and PearlDiver (PD) were queried for TSA patients from 2007 through 2016. Revision risk factors for patients aged younger than 65 years in the PD group were morbid obesity and dyspnea; no risk factors were identified in the NSQIP group. Revision risk factors for patients aged 65 years or older in the PD group were dyspnea and diabetes; in the NSQIP group, congestive heart failure increased revision risk.

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Study: Staged Bilateral Versus Unilateral Hip Arthroscopy

A study published in the July issue of Arthroscopy compared staged bilateral hip arthroscopy versus unilateral hip arthroscopy in matched patients. A total of 42 bilateral patients (84 hips) and 84 unilateral patients (84 hips) were compared. From baseline to two-year follow-up, both groups presented significant improvements in the modified Harris Hip Score (mHHS) and Non-arthritic Hip Score (NAHS) (bilateral group mHHS: 45.5 to 81.7; bilateral group NAHS: 49.5 to 83.6; unilateral group mHHS: 48.5 to 83.6; unilateral group NAHS: 48.8 to 85.0). The patient-acceptable symptomatic state was achieved in 68 percent in the bilateral group (n = 57 hips) and 74 percent in the unilateral group (n = 62 hips).

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Study Analyzes Impact of Unilateral Pulsed Jet Lavage Before Vertebroplasty

According to a study published online in the Journal of Orthopaedic Surgery and Research, unilateral pulsed jet lavage may reduce intravertebral pressure and lower cement leakage during vertebroplasty. Six cadaver spines provided 30 lumbar vertebrae that were randomized into two groups: with or without irrigation. The average maximum intravertebral pressure during cement injection was 2.22 kPa in the irrigated group and 4.92 kPa in the unirrigated group. The irrigated group had a consistent homogeneous cement distribution with less cement mass volume (3,832 mm 3 versus 4,344 mm 3), as well as a lower leakage rate (6.7 percent versus 46.7 percent).

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COVID-19 Updates

Study: Effect of Masking Policies on COVID-19 Positivity in Healthcare Workers

A study published online in JAMA assessed the effect of universal masking on COVID-19 positivity among healthcare workers. The study period consisted of three phases: before implementing universal masking of healthcare workers (preintervention), a transition period until implementation of universal masking of patients and an additional lag period for symptom manifestation, and the intervention period (intervention). A total of 9,850 healthcare workers were tested, of whom 1,271 tested positive for COVID-19. During the preintervention period, the positivity rate increased from 0 percent to 21.32 percent; during the intervention period, it decreased from 14.65 percent to 11.46 percent.

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Congressional Response to COVID-19

The congressional response to the COVID-19 pandemic has encompassed four major pieces of legislation and trillions of dollars in new spending since early March. As the healthcare industry adapts to this unprecedented crisis, AAOS continues to work with allies in Congress to ensure that its priorities, including the preservation of orthopaedic private practice, are advanced in relief legislation. AAOS continues to advocate for provisions to protect orthopaedic surgeons, your practices, and your patients during this health crisis.

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AAOS Named Official Registry of the OrthoForum

AAOS announced a collaboration with the OrthoForum, a nationwide network of privately owned orthopaedic practices known for its pillars of benchmarking, networking, innovation, and advocacy. Specifically, the collaboration names the AAOS Registry Program as the OrthoForum’s recommended registries for its members. Read more about how the AAOS Registries support the organization’s mission of providing orthopaedic group practices with access to the latest best practices and benchmarking tools needed to advance their local market presence.

Read the AAOS press release…