Today’s Top Story

Study: XLPE linked to reduced wear and revision compared to CPE for THA

According to a study published online in the journal Clinical Orthopaedics and Related Research ( CORR), crosslinked polyethylene (XLPE) may be associated with reduced wear, osteolysis, and revision rates compared with conventional polyethylene (CPE) for total hip arthroplasty (THA) patients. Members of the research team conducted a randomized, controlled trial of 236 primary THAs (226 patients) at a single institution. Of 85 unrevised THAs available at minimum 14-year follow-up, they found that the mean steady-state linear wear rate for THAs with XLPE liners was lower than the mean linear wear rate for the THAs with CPE liners. In addition, at 15-year follow-up, the researchers note that the cumulative incidence of revision was lower in the XLPE group than the CPE group. Overall, 9 percent (four of 46) of hips in the XLPE group and 46 percent (18 of 39) of hips in the CPE group displayed osteolysis of any size.

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Other News

Study: Where does degenerative RCT generally initiate?

Findings from a study conducted in Korea and published online in The American Journal of Sports Medicine suggest that many degenerative rotator cuff tears (RCTs) may originate from approximately 9 to 10 mm posterior to the biceps tendon. The researchers conducted a retrospective, cross-sectional study of 245 patients with nearly full or partial thickness tears. Based on 3-dimensional multiplanar reconstruction magnetic resonance imaging, they found that the mean width of all RCTs was 11.9 mm, and the mean length was 11.1 mm. Histograms showed the most common location of origin to be 9 to 10 mm posterior to the biceps tendon. Additionally, histograms of patients with narrower or wider tears displayed similar tear location distributions, suggesting that the region approximately 10 mm posterior to the biceps tendon may be the most common site of tear initiation.

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Study: Concentrated bone marrow plus PRP may help improve treatment of corticosteroid-induced osteonecrosis of the hip

Data from a preliminary study published online in CORR suggest that core hip decompression with injection of concentrated bone marrow plus platelet-rich plasma (PRP) may help improve pain and function for patients with osteonecrosis of the femoral head. The authors conducted a therapeutic study of 35 hips (22 patients) with corticosteroid-induced osteonecrosis. Of 33 hips (21 patients) available at 3-year follow-up, they found that survivorship free from THA, any procedure, and femoral head collapse was 84 percent, 67 percent, and 93 percent, respectively. Overall, the mean modified Kerboul angle improved from 205° ± 47° to 172° ± 48° postoperatively, and the mean preoperative Harris hip score was 57, which improved to 85 at most recent follow-up. The authors write that further randomized studies are needed to determine the procedure’s efficacy versus core decompression or nonsurgical treatment alone.

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CMS and AAOS to host web forums on BCPI Advanced

The U.S. Centers for Medicare & Medicaid Services (CMS) will host a web-based forum to answer questions about the new Bundled Payments for Care Improvement (BCPI) Advanced model. Attendees may ask questions during the event, but are highly encouraged to submit questions during the registration process. Under BCPI Advanced, participants will be expected to redesign care delivery to keep Medicare expenditures within a defined budget, while maintaining or improving performance on specific quality measures. The forum will take place Jan. 30, 2018, at 12:00 p.m. ET. Participants must register in advance./div>

Register for the forum…

Learn more about BCPI Advanced…


AAOS will also host a webinar to discuss BCPI Advanced. The webinar will be held Feb. 21, 2018, from 7:00 p.m. to 8:00 p.m. CT.

Register for the webinar…


Apply now for the 2018 AAOS/OREF/ORS Clinician Scholar Career Development Program

March 31 is the last day to submit an application to participate in the 2018 AAOS/Orthopaedic Research and Education Foundation (OREF)/Orthopaedic Research Society (ORS) Clinician Scholar Career Development Program (CSCDP). CSCDP is an annual workshop that seeks applicants in years PGY-2 to PGY-5 of orthopaedic residency, fellows, and junior faculty through year 3 who have the potential and desire to become orthopaedic clinician scientists. Up to 15 AAOS-sponsored participants will be selected to participate in the 1.5-day CSCDP career training program. The 2018 CSCDP will be held Sept. 27–29, 2018, in Rosemont, Ill.

Learn more and submit your application…

Call for volunteers: OAK CPG workgroup

AAOS seeks fellows to participate on the nonarthroplasty Treatment of Osteoarthritis of the Knee (OAK) clinical practice guideline (CPG) workgroup. Workgroup members will be required to complete the AAOS conflict of interest enhanced disclosure form online and to attend two mandatory meetings in Rosemont, Ill. If interested in participating, please contact Mary DeMars by Wednesday, Jan. 31, 2018, at:

Call for volunteers: MACPAC

AAOS seeks to nominate members to the Medicaid and CHIP Payment and Access Commission (MACPAC), which reviews Medicaid and Children’s Health Insurance Program (CHIP) access and payment policies, and advises Congress on issues affecting Medicaid and CHIP. Applicants for this position must be active fellows, candidate members, candidate members osteopathic, candidate member applicants for fellowship, or candidate member applicants for fellowship osteopathic. In addition, all applicants must provide the following: an online AAOS CAP application, a current curriculum vitae, a 100-word biography, and a letter of interest highlighting his or her expertise in the subject area and a statement that he or she is able to participate in full capacity. All supporting materials must be submitted to Kyle Trivedi by Sunday, Jan. 28, 2018, at 11:59 p.m. CT, at:

Learn more and submit your application…  (member login required)