Journal of Bone and Joint Surgery, American Volume最新文献

Background: The purpose of this study was to report on 2-year results of vertebral body tethering (VBT), performed under a Food and Drug Administration protocol, to obtain insight into outcomes and complications.

Methods: Forty prospectively enrolled patients with adolescent idiopathic scoliosis (AIS) who had a Sanders score of ≤4 or a Risser score of ≤2 underwent VBT for curves between 40° and 70°. Surgical, radiographic, and patient-reported outcomes were reviewed at a minimum 2-year follow-up.

Results: Mean age at surgery was 13 (range, 10 to 16) years. The 40 patients were 90% female; 95% White, 2.5% other, and 2.5% unreported; and 92.5% non-Hispanic, 5% Hispanic, and 2.5% unreported. A mean of 8 (range, 5 to 12) levels were instrumented. Most patients were at Sanders 4 (65%) and Risser 0 (63%). Mean length of stay was 3 ± 1 days, estimated blood loss was 236 ± 158 (range, 25 to 740) mL, and operative time was 4.4 ± 1.4 hours. Mean correction of the major curve was 44% (range, 22% to 95%) on the 3-month standing radiograph, 49% at 1 year, and 46% (range, -10% to 93%) at 2 years. The mean major Cobb angle improved from 51° ± 8° (range, 40° to 70°) preoperatively to 27° ± 11° (range, 3° to 56°) at 2 years. Success at 2 years, defined by a Cobb angle of <35° and no reoperation, was seen in 30 patients (75%) and was associated with a mean Cobb angle of <35° on the first postoperative standing radiograph (p < 0.001). Twelve patients (30%) demonstrated improvement in the curve with growth. By 2 years, 2 (5%) of the patients underwent repeat surgery (1 release for overcorrection, 1 lumbar VBT for lumbar curve progression after thoracic VBT). The Scoliosis Research Society (SRS) satisfaction score improved 2 years following surgery (p < 0.001), but other SRS domains only remained stable over time. Beyond 2 years, 1 additional lumbar tether was required after thoracic VBT, 1 implant was removed, and 3 fusions were performed, for a 10% fusion rate and overall 20% reoperation rate at a mean of 3.8 ± 1.1 years of follow-up. The rate of cord breakage in the study population was 20%.

Conclusions: In skeletally immature patients treated in the U.S. under a prospective Investigational Device Exemption, there was a 75% rate of successful outcomes at 2 years. Most correction was obtained at the time of surgery, and inadequate intraoperative curve correction was associated with a higher Cobb angle on the first postoperative standing radiograph and failure by 2 years.

Level of evidence: Therapeutic Level II. See Instructions for Authors for a complete description of levels of evidence.

Background: Studies investigating constitutional alignment across various grades of osteoarthritis (OA) are limited. This study explored the distribution of Coronal Plane Alignment of the Knee (CPAK) types and associated radiographic parameters with increasing OA severity.

Methods: In this retrospective cross-sectional study, 17,365 knees were analyzed using deep learning software for radiographic measurements. Knees were categorized on the basis of the Kellgren and Lawrence (KL) grade and CPAK type. Radiographic measurements were the hip-knee-ankle angle (HKAA), lateral distal femoral angle (LDFA), medial proximal tibial angle (MPTA), arithmetic HKAA (aHKA), joint line obliquity (JLO), and joint line convergence angle (JLCA). Age-stratified analysis was performed to differentiate the impact of age on OA severity.

Results: A shift in the most common CPAK type from II to I was found with increasing KL grade (p < 0.05). Furthermore, there was a corresponding increase in LDFA and JLCA with increasing KL grade, while HKAA, MPTA, and aHKA decreased after KL grade 2. Age exhibited limited association with LDFA and MPTA, suggesting that OA severity is the dominant factor related to the CPAK distribution.

Conclusions: The study found a shift in CPAK type with worsening OA. It is possible that constitutional varus types are more susceptible to OA, or that their increased OA prevalence is related to anatomical changes. This analysis offers new insights into alterations in CPAK type that occur with OA and underscores the importance of understanding pre-arthritic anatomy when performing joint reconstruction.

Level of evidence: Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

Background: Previous research has estimated that over one-half of patients with orthopaedic trauma experience financial distress after the injury. However, it is unknown what proportion of patients lived under financial distress before the injury and, therefore, the causal effect of the injury on financial distress. This study examined changes in financial distress after the injury and factors associated with new post-injury financial distress.

Methods: A prospective cohort study was performed at a single academic trauma center, leveraging patients' 2-week recall of their pre-injury financial circumstances to permit a quasi-experiment design. Adult patients with a surgically treated lower-extremity fracture were included. The primary outcome was self-reported financial distress. Pre-injury financial distress was compared with financial distress in the 6 months after the injury. Multinomial logistic regression was used to identify factors associated with new financial distress after the injury.

Results: A total of 200 study participants were enrolled (median age, 42 years [interquartile range, 32 to 59 years]); 56% of patients were male. Financial distress was present in 40% of the study participants before the injury. The fracture was associated with an absolute increase of 19% (95% confidence interval [CI], 5% to 34%; p < 0.001) in the prevalence of financial distress. New post-injury financial distress was associated with working before the injury (odds ratio [OR], 6.9 [95% CI, 2.2 to 22]; p < 0.001) and earning <$70,000 per year (OR, 3.6 [95% CI, 1.2 to 10]; p = 0.02).

Conclusions: The findings suggest that 2 of 5 patients with a lower-extremity fracture had experienced financial distress before the injury. The prevalence of financial distress increased to 3 of 5 after the injury. Working and earning <$70,000 per year before the injury substantially elevated the patients' risk of new financial distress post-injury. Future efforts should target interventions to reduce financial distress in this at-risk population.

Level of evidence: Prognostic Level II. See Instructions for Authors for a complete description of levels of evidence.

Background: The rise in xylazine-adulterated heroin and fentanyl poses novel challenges to hand surgeons and a rising epidemic of necrotic upper-extremity wounds. While prior case studies have focused on particularly severe and complex xylazine-associated necrotic (XAN) wounds, the aim of this consecutive case series was to characterize the variability of presentations (ranging from mild to severe) at a single institution at the epicenter of the xylazine epidemic.

Methods: Patients presenting to a tertiary referral center for XAN upper-extremity wounds were retrospectively identified from emergency department visits and hospital admissions between January 2021 and December 2023. Patient characteristics, clinical findings, treatment, and hospitalization-related measures were recorded. Wounds were classified according to the depth, density, size, and presence of osteomyelitis. All of the variables were quantified using descriptive statistics.

Results: In total, 82 patients with 125 XAN wounds were included in the study. The mean age was 40.3 ± 8.2 years, and 57% of the patients were men. Of the 125 wounds, 54% had associated osteomyelitis, 78% were confluent, and 47%involved more than two-thirds of the anatomic region. Surgery was recommended for 78% of the patients and was performed in 62%, with 13% undergoing amputation. Complications rates were high (77%) and included bacteremia (40%) and death (5%). Patients were hospitalized a mean of 4.1 times and were discharged against medical advice 2.8 times per year.

Conclusions: This study presents a broad perspective on demographic, social, and medical factors in patients with XAN wounds of the upper extremity. Given the complexity and burden of this public health crisis, early intervention is important to prevent complications and mitigate costs.

Level of evidence: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

➢ Low back pain has a lifetime incidence of up to 84% and represents the leading cause of disability in the United States; 10% to 38% of cases can be attributed to sacroiliac joint (SIJ) dysfunction as an important pain generator.➢ Physical examination of the SIJ, including >1 provocation test (due to their moderate sensitivity and specificity) and examination of adjacent joints (hip and lumbar spine) should be routinely performed in all patients presenting with low back, gluteal, and posterior hip pain.➢ Radiographic investigations including radiographs, computed tomography, and magnetic resonance imaging with protocols optimized for the visualization of the SIJs may facilitate the diagnosis of common pathologies.➢ Intra-articular injections with anesthetic can be helpful in localizing the source of low back pain. Over-the-counter analgesics, physiotherapy, intra-articular injections, radiofrequency ablation, and surgery are all management options and should be approached from the least invasive to the most invasive to minimize the risks of complications.➢ Lumbar fusion surgery predisposes patients to more rapid SIJ degeneration and can also result in more rapid degenerative changes in the hip joints, especially with SIJ fusion.➢ Hip surgery, including hip arthroplasty and preservation surgery, is not a risk factor for SIJ degeneration, although reduced outcomes following hip surgery can be seen in patients with degenerative SIJ changes.

Abstract: Despite the increasing utilization of total ankle replacement (TAR) for end-stage ankle arthritis, there remains a paucity of long-term follow-up data comparing arthroplasty to arthrodesis. The aim of the current paper was to provide the long-term clinical outcomes of TAR and ankle arthrodesis (AA), measured with use of validated scoring instruments, in a prospective multicenter cohort of patients with ankle arthritis. This cohort from the Canadian Orthopaedic Foot and Ankle Society (COFAS) Prospective Ankle Reconstruction Database comprised patients who underwent TAR or AA between 2001 and 2007. Data collection included demographics, comorbidities, and Ankle Osteoarthritis Scale and Short Form-36 scores. A total of 211 patients were included in the present study, with a minimum follow-up of 10 years (range, 10 to 18 years) and a mean follow-up of 13.2 years. In this cohort, the baseline characteristics of those who underwent AA and those who underwent TAR differed with respect to mean age (53.8 versus 61.3 years; p < 0.001), smoking status (31% versus 50% with no smoking history; p < 0.001), and inflammatory arthritis diagnosis (2% versus 17%; p = 0.005). Patients in the AA group had a greater chance of having no further surgery following their index procedure compared with those in the TAR group (70% versus 58%; p = 0.02). The TAR and AA groups demonstrated similar functional outcomes. In conclusion, the long-term clinical outcomes of TAR and AA were similar in a diverse cohort in which the treatment was tailored to the condition of the patient.

Level of evidence: Therapeutic Level II. See Instructions for Authors for a complete description of levels of evidence.

Background: There is a paucity of longer-term outcome data in younger adult patients who undergo fixation for an intracapsular hip fracture. The aims of this study were to evaluate the outcomes for young adult patients undergoing intracapsular hip fracture fixation and to assess factors associated with failure and patient-reported outcome measures (PROMs).

Methods: From 2008 to 2018, 112 consecutive patients ≤60 years of age (mean age, 48 years [range, 20 to 60 years]; 54% male) were retrospectively identified as having undergone fixation of an intracapsular hip fracture. Displaced fractures (n = 81) were more common than nondisplaced or minimally displaced fractures (n = 31). Failure was defined as loss of fixation, nonunion, or osteonecrosis. PROMs that were assessed included the Oxford Hip Score (OHS), Forgotten Joint Score (FJS), EuroQol 5-Dimension (EQ-5D) index and Visual Analogue Scale (EQ-VAS), and University of California Los Angeles (UCLA) Activity Scale.

Results: Eighty-six patients (77%) had union without evidence of failure, and 26 patients (23%) had a failure, including loss of fixation (6 patients; 5.4%), nonunion (5 patients; 4.5%), and osteonecrosis (16 patients; 14.3%). Overall, 39 patients (35%) required secondary surgery, with hardware removal (21 patients; 18.8%) and total hip arthroplasty (21 patients; 18.8%) being the most frequent procedures. Long-term functional outcomes were obtained for 81 patients (72%) at a mean of 7 years (range, 2.8 to 12.8 years). The median OHS was 47 (interquartile range [IQR], 40-48), the median FJS was 75 (IQR, 49-85), the median EQ-5D index was 1.00 (IQR, 0.77-1.00), and the median EQ-VAS was 90 (IQR, 70-95). The mean UCLA score fell from 6.8 preinjury to 6.0 postinjury (p < 0.001). Compared with the patients who had primary union, those who had a complication had significantly lower median OHS scores (44.5 versus 47, p = 0.008), EQ-5D index scores (0.825 versus 1.00, p = 0.001), EQ-VAS scores (70 versus 90, p = 0.01), and UCLA scores (4.5 versus 6.5, p = 0.001).

Conclusions: One in 4 young adult patients undergoing intracapsular hip fracture fixation had a failure. Failure was associated with inferior long-term function and health-related quality of life.

Level of evidence: Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.