Study: Machine Learning Models Accurately Predict Revision Surgery after Noncemented THA in Osteoporotic Patients
According to a retrospective study published in the May 15 issue of the Journal of the AAOS ®, machine learning (ML) models are highly accurate when predicting revision surgery in osteoporotic patients after primary noncemented total hip arthroplasty (THA). A total of 350 patients were evaluated. Four ML algorithms were designed to predict revision surgery probability. At a mean of 3.7 years after THA, the revision surgery rate was 5.2 percent. The strongest predictors of revision were female sex, BMI ˃35, age ˃70 years, American Society of Anesthesiology score ≥3, and T-score.
Study: Predictors of Subscapularis Tendon Tear in Shoulder Arthroscopy Patients
A retrospective study published online in BMC Musculoskeletal Disorders identified predictors of subscapularis (SSC) tendon tears via MRI. In total, 660 shoulder arthroscopy patients with preoperative MRI were divided into two groups according to presence of SSC tear. Five factors were independently associated with SSC tendon tears: coracohumeral distance, fluid accumulation, long head of biceps tendon dislocation/subluxation, number of posterosuperior rotator cuff tears, and MRI diagnosis. The nomogram achieved good agreement on risk estimation.
Study: High Interrater Reliability for Metaphyseal versus Metadiaphyseal Classification in Fifth Metatarsal Base Fractures
The metaphyseal versus metadiaphyseal classification for fifth metatarsal base fractures (Jones fractures) demonstrated greater interrater reliability compared with other classification systems, according to a study published online in Foot & Ankle International. American Orthopaedic Foot and Ankle Society members were surveyed regarding radiographs of 18 fifth metatarsal base fractures. A total of 223 respondents with a median of 12 years of experience completed the initial survey, and 80 respondents completed a second follow-up survey. There was moderate interrater reliability for Jones fracture and zone classifications, but substantial reliability for the metaphyseal versus metadiaphyseal classification.
Study Investigates Distance between Nutrient Foramen and Spinal Canal as a Landmark for Spinal Surgery
A retrospective study published online in The Spine Journal found that the nutrient foramen is a reliable landmark when using the posterior cervical approach in patients with cervical pathologies. A total of 266 patients treated between January 2005 and December 2019 were evaluated. Researchers measured the distance between each foramen and the spinal canal and the foramen angle at each vertebral level via preoperative 3D CT imaging. The nutrient foramina were always located outside the spinal canal, with an average distance of 3.06 mm. Lower spinal levels were associated with a shorter distance between the foramen and the spinal canal.
Study: Utility of Concussion Diagnostic Tools in Ice Hockey Athletes
According to a study published in the May issue of the Clinical Journal of Sports Medicine, the King-Devick (KD) test for diagnosing concussions in ice hockey players does not add diagnostic value compared with the Sport Concussion Assessment Tool (SCAT) 5. Two groups of athletes with suspected concussions were evaluated at baseline and acutely, respectively, via the KD and SCAT-3 or SCAT-5 tests. Results were compared with a nonconcussed control group. Concussed players had a decline in KD scores compared with controls, but the KD test did not account for significant unique variance when predicting diagnosis compared with SCAT-5.
The takeaway from the AAOS 2022 Annual Meeting symposium “Orthopaedic Surgeons in Prison: It Could Happen to You” was encapsulated by that eye-opening title. Not only did the panel include individuals with knowledge of the many ways in which physicians can find themselves in legal jeopardy, but two panelists were also orthopaedic surgeons who have been convicted of crimes related to business arrangements and financial transactions that they say appeared to be legitimate at the time.
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 that 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 to review suggestions and provide feedback. Submit an article suggestion online or email aaosnow@aaos.org.
