The Association of Sacro-Femoro-Pubic Angle and Postoperative Dislocation Following Total Hip Arthroplasty.

BACKGROUND: Spino-pelvic orientation may affect dislocation risk following total hip arthroplasty (THA). It can be measured on lateral lumbo-pelvic radiographs. The sacro-femoro-pubic (SFP) angle, measured on an antero-posterior (AP) pelvis radiograph, is a reliable proxy for pelvic tilt, a measurement of spino-pelvic orientation measured on a lateral lumbo-pelvic radiograph. The purpose of this study was to investigate the relationship between SFP angle and dislocation following THA. METHODS: An Institutional Review Board-approved retrospective case-control study was conducted at a single academic center. We matched 71 dislocators (cases) to 71 nondislocators (controls) following THA performed by 1 of 10 surgeons between September 2001 and December 2010. Two authors (readers) independently calculated SFP angle from single preoperative AP pelvis radiographs. Readers were blinded to cases and controls. Conditional logistic regressions were used to identify factors differentiating cases and controls. RESULTS: The data did not show a clinically relevant or statistically significant difference in SFP angles after adjusting for gender, American Society of Anesthesiologists classification, prosthetic head size, age at time of THA, measurement laterality, and surgeon. CONCLUSION: We did not find an association between preoperative SFP angle and dislocation following THA in our cohort. Based on our data, SFP angle as measured on a single AP pelvis radiograph should not be used to assess dislocation risk prior to THA.

Reliability and Reproducibility of Sacro-Femoro-Pubic Angle Measurements on Anteroposterior Pelvis Radiographs.

BACKGROUND: The sacro-femoro-pubic (SFP) angle is a surrogate measurement for pelvic tilt obtained on anteroposterior (AP) pelvis radiographs. It is unknown whether the SFP angle can be measured reliably by senior surgeons and trainees alike. METHODS: We conducted an intrareader and interreader reliability study using preoperative AP pelvis radiographs. Using our hospital electronic database, we randomly selected 31 subjects undergoing primary total hip arthroplasty. An attending orthopedic surgeon and two orthopedic surgery residents performed two separate SFP angle measurements for each subject. Intrareader and interreader agreement were measured using intraclass correlation coefficients (ICC). RESULTS: Pairwise intrareader and interreader ICCs ranged from 0.91 to 0.99. Overall ICC was 0.94. Interreader ICCs between the attending surgeon and each orthopedic resident were 0.93 and 0.98, and the ICC between orthopedic residents was 0.91. Interreader mean differences for SFP angle measurements were 2.32 degrees or less: -2.03 (standard deviation: 2.23) and 0.29 (1.64) between the attending surgeon and each orthopedic resident, and 2.32 (2.44) between orthopedic residents. CONCLUSION: SFP angle may be measured reliably on AP pelvis radiographs by senior clinicians and trainees. SFP angle measurement may prove helpful as an alternative to pelvic tilt measurements when lateral pelvic radiographs are not available.

Patient Satisfaction With Nonopioid Pain Management Following Knee Arthroscopic Partial Meniscectomy and/or Chondroplasty.

The purpose of this study was to determine the efficacy of nonopioid pain management following arthroscopic partial meniscectomy and/or chondroplasty and to assess patients' attitudes regarding their need for opioid pain medication following these procedures. Patients who underwent a knee arthroscopy procedure for either partial meniscectomy and/or chondroplasty from July 2016 to January 2017 by a single surgeon at a single institution were included. Medical records were reviewed, and demographics were recorded. Two weeks postoperatively, patients self-reported opioid and nonopioid medication use. Patients were also questioned regarding their perceived need for opioid medication, whether they felt their pain was adequately controlled, and how their pain compared with their preoperative expectations. Thirty-four patients (17 male, 17 female), with a mean age at the time of surgery of 47.79 years (range, 19-68 years), were included. Eighty-two percent (n=28) of the patients reported using nonopioid analgesics for pain control, whereas 18% (n=6) reported using opioids. Of those not using opioids, 96.4% (n=27) reported not feeling the need for opioid medications. Three of 6 patients requiring opioids were unable to take nonsteroidal anti-inflammatory drugs. All 6 patients who took opioids felt that they needed them for adequate pain control. This study provides initial encouragement that it is largely possible to remove opioids from the postoperative pain regimen of knee arthroscopy patients and maintain adequate pain control and patient satisfaction. [Orthopedics. 2018; 41(4):209-214.].

Inconsistencies between abstracts and manuscripts in published studies about lumbar spine surgery.

STUDY DESIGN: Systematic review. OBJECTIVE: To perform a comparison of randomized controlled trial (RCT) abstracts and manuscripts published in recent spinal literature. SUMMARY OF BACKGROUND DATA: RCTs represent the "gold standard" upon which evidence-based treatment decisions are made. Inconsistencies between an abstract and manuscript can mislead readers' interpretation of findings and conclusions. Abstract findings are often cited without reference to the manuscript itself. In other fields of medicine, studies have shown discrepancies between RCT abstracts and manuscripts. METHODS: A literature search of RCTs published in Spine, The Spine Journal, and Journal of Spinal Disorders and Techniques during a 10-year period (2001-2010) was performed. All manuscripts described as randomized trials concerning lumbar spinal surgery were selected. Manuscripts were analyzed using a standardized 21-item questionnaire to collect data regarding inconsistencies or bias in the abstract compared with the manuscript. Abstracts were considered deficient if they contained data that were either inconsistent with the manuscript or if they failed to include important findings from the manuscript. Four reviewers reported on the 40 manuscripts that met the inclusion criteria. Each manuscript was reviewed by 2 reviewers. In the event of conflicts in analysis, resolution was achieved through discussion between the reviewers. RESULTS: At least 1 inconsistency was found in 75% of studies. Despite the word "randomized" appearing in 75% of titles and 92.5% of abstracts, the method of randomization was not described in 37.5% of manuscripts and (if described) was considered unacceptable in 28%. The primary outcome of the study was clearly stated in only 22.5% of abstracts and 47.5% of manuscripts. Pertinent negatives were not reported in 40% of the abstracts. Relevant statistically significant results were reported in only 60% of abstracts. CONCLUSION: Abstracts are discrepant with full manuscripts in a surprisingly high proportion of manuscripts. Authors, editors, and peer reviewers should strive to ensure that abstracts accurately represent the data in RCT manuscripts.

Evidence-based analysis of adjacent segment degeneration and disease after ACDF: a systematic review.

BACKGROUND CONTEXT: Follow-up studies of patients undergoing anterior cervical discectomy and interbody fusion (ACDF) have demonstrated varying degrees of radiographic degeneration at adjacent levels, with most cases being asymptomatic (adjacent segment degeneration, ASDeg) and far fewer being symptomatic (adjacent segment disease, ASDz). Controversy remains as to whether these conditions are related to altered biomechanics or represent the natural history of cervical spondylosis at the adjacent segment. PURPOSE: To provide an evidence-based analysis of the peer-reviewed literature on clinical studies of ASDeg and ASDz after ACDF. STUDY DESIGN/SETTING: Systematic review of existing literature. METHODS: The MEDLINE database was queried for clinical studies reporting ASDeg and/or ASDz after ACDF. Articles written in the English language with a minimum follow-up of 2 years were independently reviewed and analyzed by two authors, and the level of evidence was assigned. Data were pooled to generate summary outcomes and organized by number of levels, technique, and graft/implants. RESULTS: Of the 238 articles returned from the MEDLINE database query, 14 met inclusion criteria. An average of 168 patients was enrolled per study with an average follow-up of 106.5 months. Graft materials, cage design, plate fixation system, and length of fusion varied widely. Additionally, no clear standard was seen for radiographic assessment modalities (eg, plain lateral radiograph, flexion-extension radiographs, computed tomography, or magnetic resonance imaging). Validated clinical outcome measures were used in 43% (6/14) of the studies. The average incidence of ASDeg was 47.33% (459.14/970) with a range from 16% to 96%. The frequency-weighted average for ASDz was 11.99% (263.70/2,199) with a range from 1.80% to 36.00%. Follow-up ranged from 24 to 296 months with no reliable commonalities, which prohibited a meta-analysis. CONCLUSIONS: This review highlights the heterogeneous methodology of the peer-reviewed literature on ASDeg and ASDz after ACDF and the paucity of high-level clinical data published on these conditions. Despite the low level of evidence to define the incidence of ASDeg and ASDz, it is clear that radiographic ASDeg is more common than symptomatic ASDz, indicating that adjacent segment pathology remains subclinical in a large subset of patients. This analysis underscores the need for standardized radiographic measures in the assessment of ASDeg and validated clinical outcome measures for ASDz after ACDF. Consistent methodology and multi-surgeon collaboration may improve the quality of clinical data on ASDeg and ASDz and elucidate the true etiology and incidence of these conditions.

Epithelioid hemangioma of the spine: a case series of six patients and review of the literature.

BACKGROUND CONTEXT: Epithelioid hemangioma (EH) of bone is a benign vascular tumor that can be locally aggressive. It rarely arises in the spine, and the optimum management of EH of the vertebrae is not well delineated. PURPOSE: The report describes our experience treating six patients with EH of the spine in an effort to document the treatment of the rare spinal presentation. STUDY DESIGN: This study is designed as a retrospective cohort study. PATIENT SAMPLE: A continuous series of patients with the diagnosis of EH of the spine who presented at our institution. OUTCOME MEASURES: The clinical and radiographic follow-up of the patient population is documented. METHODS: The Bone Sarcoma Registry at our institution was used to obtain a list of all patients diagnosed with EH of the spine. Medical records, radiographs, and pathology reports were retrospectively reviewed in all cases. Only biopsy-proven cases were included. RESULTS: The six patients included five men and one woman who ranged in age from 20 to 58 years (with an average age of 40 years). The follow-up available for all six patients ranged from 6 to 115 (average 46.8) months. All patients presented with lytic vertebral body lesions. Five patients presented with pain secondary to their tumor, and the tumor in the sixth patient was found incidentally during the workup for a herniated disc. Three patients required surgical management for instability secondary to the destructive nature of their tumors, and two other patients required emergent decompression secondary to spinal cord compression by the tumor. The sixth patient was treated expectantly after biopsy confirmation. Three patients received postoperative radiation therapy as gross tumor remained after surgery. Three patients had gross total resections and did not receive postoperative radiation. Preoperative embolization was used in four patients. One patient continued to have back pain after surgery and radiation and another continued to have ataxia after surgery and radiation. No tumor locally recurred or progressed. CONCLUSIONS: Our data suggest that EH of the spine can be locally aggressive and lead to instability and cord compression. Surgery is required in such instances; however, observation should be considered in patients without instability or cord compression.