Purpose
To examine the role of the posterior fan-like extension of the ACL’s femoral footprint on the ACL failure load.
Methods
Sixteen (
n
= 16) fresh frozen, mature porcine knees were used in this ...study and randomized into two groups (
n
= 8): intact femoral ACL insertion (ACL intact group) and cut posterior fan-like extension of the ACL (ACL cut group). In the ACL cut group, flexing the knees to 90°, created a folded border between the posterior fan-like extension and the midsubstance insertion of the femoral ACL footprint and the posterior fan-like extension was dissected and both areas were measured. Specimens were placed in a testing machine at 30° of flexion and subjected to anterior tibial loading (60 mm/min) until ACL failure.
Results
The intact ACL group had a femoral insertion area of 182.1 ± 17.1 mm
2
. In the ACL cut group, the midsubstance insertion area was 113.3 ± 16.6 mm
2
, and the cut posterior fan-like extension portion area was 67.1 ± 8.3 mm
2
. The failure load of the ACL intact group was 3599 ± 457 N and was significantly higher (
p
< 0.001) than the failure load of the ACL cut group 392 ± 83 N.
Conclusion
Transection of the posterior fan-like extension of the ACL femoral footprint has a significant effect on the failure load of the ligament during anterior loading at full extension. Regarding clinical relevance, this study suggests the importance of the posterior fan-like extension of the ACL footprint which potentially may be retained with remnant preservation during ACL reconstruction. Femoral insertion remnant preservation may allow incorporation of the fan-like structure into the graft increasing graft strength.
Full text
Available for:
EMUNI, FSPLJ, FZAB, GEOZS, GIS, IJS, IMTLJ, KILJ, KISLJ, MFDPS, NLZOH, NUK, OBVAL, OILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
Background:
Recent studies have highlighted dual plating as a method of reducing high rates of postoperative complication after operative management of displaced midshaft clavicular fractures. ...However, few studies have reliably characterized reoperation rates and magnitude of risk reduction achieved when using dual versus anterior and superior single-plate techniques.
Hypothesis:
There would be lower rates of reoperation among patients who underwent open reduction and internal fixation (ORIF) of displaced midshaft clavicular fractures via dual plating.
Study Design:
Cohort study; Level of evidence, 3.
Methods:
This was a retrospective analysis of patients who underwent ORIF for a displaced midshaft clavicular fracture between 2010 and 2021 at a level 1 trauma center with a minimum 12-month follow-up. Patients were separated into 3 cohorts based on fixation type: (1) orthogonal dual mini-fragment plate fixation, (2) superior plate fixation, and (3) anterior plate fixation. Data on patient characteristics, fracture pattern, and reoperations were documented. All-cause reoperation rates and hazard ratio (HR) estimates of dual, superior, and anterior plating were calculated using a multivariate multilevel mixed-effects parametric survival model. Significant confounders including high-risk fracture morphology and smoking status were controlled for in the final model.
Results:
A final cohort of 256 patients was identified with mean follow-up of 4.9 ± 3.8 years. In total, 101 patients underwent superior plating, 92 underwent anterior plating, and 63 underwent dual plating. Overall, 31 reoperations took place (18 in superior, 12 in anterior, 1 in dual plating) among 22 patients. Major contributors to reoperation included symptomatic hardware (n = 11), nonunion (n = 8), deep infection (n = 7), and wound dehiscence (n = 2). Superior plating revealed the highest reoperation rate of 0.031 per person-years, followed by anterior plating with 0.026 per person-years and dual plating with 0.005 per person-years. Overall, single plating (either anterior or superior placement) had a nearly 8-fold greater risk of reoperation than dual plating (HR, 7.62; 95% CI, 1.02-56.82; P = .048). Further broken down by technique, superior plating had an 8-fold greater risk of reoperation than dual plating (HR, 8.36; 95% CI, 1.10-63.86; P = .041), but anterior plating did not demonstrate a statistically significant difference compared with dual plating (HR, 6.79; 95% CI, 0.87-52.90; P = .068).
Conclusion:
Dual-plate fixation represents an excellent treatment for displaced midshaft clavicular fractures, with low rates of nonunion and reoperation. When compared with single locked superior or anterior plate fixation, dual mini-fragment plate fixation has a nearly 8-fold lower risk of reoperation.
Full text
Available for:
FSPLJ, NUK, OILJ, SAZU, UKNU, UL, UM, UPUK
Background:
Popularization of systematic reviews has been met with controversy because of concerns that the primary literature for certain topics may not be suited for systematic review and ...meta-analysis.
Purpose:
To assess the rate of publication of systematic reviews based on their level of evidence (LOE) in influential orthopaedic sports medicine journals and commonly studied topics in sports medicine.
Study Design:
Systematic review.
Methods:
An electronic search was performed using the PubMed database of studies published from January 2010 to December 2020. The advanced search function was used to identify systematic reviews from the Journal of Shoulder and Elbow Surgery (JSES), American Journal of Sports Medicine (AJSM), Arthroscopy, British Journal of Sports Medicine (BJSM), Journal of Bone and Joint Surgery–American Volume (JBJS), and Sports Medicine (SM Auckland), as well as reviews of the most common areas of sports medicine research, including rotator cuff repair (RCR), shoulder instability (SI), anterior cruciate ligament reconstruction (ACLR), and meniscal repair. The LOE was assigned to each included study according to the Oxford Centre for Evidence-Based Medicine. Studies were grouped as LOE 1-2, LOE 3-5, and nonclinical systematic reviews. A negative binomial regression was used to determine the changes in publication rate over time.
Results:
A total of 2162 systematic reviews were included in this study. From 2010 to 2020, the rate of publication of LOE 3-5 systematic reviews increased significantly among most of the surveyed journals (AJSM, P < .0001; Arthroscopy, P = .01; BJSM, P < .0001; JSES, P < .0001; SM Auckland, P < .0001), with the exception of JBJS (P = .57). The rate of publication of LOE 1-2 systematic reviews increased in AJSM (P < .0001), Arthroscopy (P = .02), BJSM (P < .0001), and SM Auckland (P < .0001); however, no significant changes were seen in JBJS (P = .08) or JSES (P = .15). The publication rate of LOE 3-5 systematic reviews increased for all sports medicine topics surveyed (meniscal repair, P < .0001; RCR, P < .0001; SI, P < .0001; ACLR, P < .0001). However, the publication rate of LOE 1-2 studies only increased for RCR (P = .0003) and ACLR (P < .0001).
Conclusion:
The rate of publication of LOE 3-5 systematic reviews exponentially increased in orthopaedic sports medicine journals over the past decade, outpacing the publication rate of LOE 1-2 systematic reviews.
Background Addressing preoperative shoulder stiffness before rotator cuff repair (RCR) is advocated, but the effectiveness of this approach is debatable. We hypothesized that 1-stage treatment of ...concomitant rotator cuff tear (RCT) with shoulder stiffness has comparable results with isolated RCT. Methods Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, the databases including MEDLINE, Embase, Cochrane Library, and Scopus were searched using the keywords of “shoulder stiffness” OR “adhesive capsulitis” OR “frozen shoulder” AND “rotator cuff.” Studies that met all the criteria compared the 2 arms of isolated RCT vs. RCT with concomitant shoulder stiffness, received no physical therapy before surgery, and reported data of preoperative and postoperative range of motion (ROM) and functional outcomes after surgery. Results Four level III studies met the inclusion criteria. The non-stiff group (isolated RCT) included 460 patients who underwent RCR; the stiff group (RCT with concomitant shoulder stiffness) included 111 patients who underwent RCR and manipulation under anesthesia with or without capsular release. There were significant differences in preoperative ROM between stiff and non-stiff groups. At final follow-up, there were no statistical differences in all ROM between the 2 groups. There was no significant difference in comparing preoperative and postoperative outcome scores including visual analog scale for pain, Constant, modified American Shoulder and Elbow Surgeons, and University of California–Los Angeles scores. Conclusions Concomitant surgical treatment of nonmassive RCT and moderate shoulder stiffness in 1 stage may have comparable results to the surgical treatment of RCT in patients without preoperative stiffness. Therefore, a physical therapy regimen before surgical intervention may not be necessary.
Full text
Available for:
GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPUK, ZRSKP
Objectives:
More recently, the glenoid track has been described as a continuum rather than a binary “on-track/off-track” concept. “Distance to dislocation” (DTD), which defines how far an on-track ...lesion is from being off-track, has proven to be a strong predictor for recurrent dislocation following arthroscopic Bankart repair. Risk of recurrent instability following a Latarjet as it relates to DTD, however, is unknown. The purpose of this study was to determine if DTD is a predictor of recurrent dislocation and return-to-sport/work (RTS). We hypothesized higher DTD values would correlate with lower failure rates and higher rates of RTS.
Methods:
We retrospectively identified 106 consecutive patients who underwent a Latarjet between 2012 and 2022. Glenoid bone loss, Hills-Sachs Interval (HSI), glenoid track (GT), and DTD (DTD = GT – HSI) were determined from preoperative MRIs. On-track shoulders corresponded with positive DTD values, while off-track shoulders revealed negative DTD values. Relatedly, the more positive or negative the DTD value, the more on-track or off-track the shoulder. Univariate and multivariate cox regression analyses were utilized to evaluate the association between recurrent dislocation, patient demographics, and DTD. Using parametric survival analysis, we evaluated the association between RTS, demographics, and DTD.
Results:
Seventeen patients (16%) experienced recurrent dislocations. Our cohort was 70% male with an average follow-up of 1.5 years. Patient age (p=0.035), revision status (p=0.033), and DTD (p=0.005) were significant predictors of reoperation on univariate analysis. After adjusting for confounders, only DTD (p=0.043) remained a significant predictor of recurrent instability, Figure 1. Regarding RTS, patient age (p=0.14), sex (p=0.029), and DTD (p<0.0005) were predictive of RTS on univariate analysis. After adjusting for covariates, we observed an interaction between patient age and DTD (p=0.036). More specifically, older patients have a more prolonged RTS at lower DTD values compared to younger patients, Figure 2.
Conclusions:
Regardless of on-track vs off-track status, DTD is a useful variable in the work-up of patients undergoing Latarjet reconstruction. Lower DTD values are predictive of higher rates of recurrent instability and lower rates of RTS, especially in older patients.
Objectives:
Many studies have highlighted lower rates of secondary operations with dual-plating compared to single-plating. Despite higher upfront costs associated with the dual-plating construct, ...the observed reduction in secondary operations compared to single-plating may make it a more cost- effective treatment option. The objective of this study was to assess the cost-effectiveness of dual-plate fixation compared to single-plate fixation in patients with operatively indicated displaced midshaft clavicle fractures. We hypothesized dual-plating would be a more cost-effective surgical option than single-plating, given its lower rates of postoperative complications.
Methods:
We developed a decision tree to model the occurrence of postoperative complications (hardware issues, wound healing issues, deep infection, non-union, and symptomatic hardware) associated with secondary surgeries. Complication-specific risk estimates were summarized for both plating techniques. The time horizon was two years, and the analysis was conducted from the healthcare payer’s perspective. The costs included direct medical costs, while the benefits were measured in quality-adjusted life-years (QALYs). We assumed that dual-plating would be $300 more expensive than single-plating upfront. We conducted probabilistic and one-way sensitivity analyses.
Results:
The model predicted reoperation in 6% of patients in the dual-plating arm compared to 14% of patients in the single-plating arm. In the base case analysis, the dual-plating increased QALYs by 0.007 and costs by $70 per patient yielding an incremental cost-effectiveness ratio (ICER) of $10,600 per QALY gained. The sensitivity analysis demonstrated that the cost-effectiveness of dual plating is driven by the cost of index surgery, risk of non-union, and symptomatic hardware complications in single- and dual- plating. At a willingness to pay threshold of $100,000 per QALY gained, 92% of simulations suggested dual-plating is cost-effective compared to single-plating (Figure 1).
Conclusions:
When indicated, operative management of displaced midshaft clavicle fractures with dual- plating is cost-effective compared to single-plating. Despite its higher initial upfront hardware costs, dual plating appears to offset added costs via lower rates of reoperations and improved patient quality of life.
Objectives:
Dual plate fixation has been proposed as a solution to the high rates of reoperation secondary to operative management of displaced midshaft clavicle fractures. Previous studies have ...recommended dual plating for patients specifically at higher risk of reoperation. Therefore, the purpose of this study was to compare reoperation rates among patients who underwent single superior, single anterior, and dual plating while adjusting for risk factors including age, smoking status, and high-risk fracture morphology. We hypothesized lower rates of reoperation among patients who underwent dual plate fixation.
Methods:
This was a retrospective cohort study of all patients who presented with a midshaft clavicle fracture and underwent ORIF between 2007 and 2021 to our trauma/sports divisions. Patient demographics, fracture pattern, plating technique, postoperative complications, date of surgery, reoperation status, date of last follow up, and date of reoperation were documented. We report hazard ratio (HR) estimates using a multivariate multilevel mixed-effects parametric survival model, which accounted for patients with multiple reoperations and adjusted for covariates.
Results:
A cohort of 395 patients (mean age 38.5±14.4 years, 81.7% male) were identified with average follow-up of 5.5±8.6 months. There were 77 z-type, 157 transverse, and 161 oblique fractures. With regards to plating technique, 152 underwent single superior plating, 149 experienced single anterior plating, and 94 had dual plating. After initial operation, there were 8 total instances of non-union (2.0%), 0 in the dual plating cohort (0%), 4 in the superior plating cohort (2.6%), and 4 in the anterior plating cohort (2.7%) (p=0.35). A total of 28 reoperations took place among 19 patients (4.8%), with 6 patients experiencing multiple reoperations.
Single plating with superior placement revealed the highest reoperation rate of 0.26 per person-years, followed by anterior placement with 0.17 per person-years, and finally dual plating with 0.02 per person-years (Figure 1). Patients who underwent single plating (either anterior or superior placement) revealed a greater rate of reoperation when compared to patients who underwent dual plating (HR: 8.3, p=0.045). Patients who underwent single plating with superior placement had a rate of reoperation ten- times greater than patients who underwent dual plating (HR:10.1, p=0.03). Patients who underwent single plating with anterior placement had a rate of reoperation six-times greater than patients who underwent dual plating (HR: 6.4, p=0.09), although not statistically significant.
Conclusions:
Dual plate fixation of displaced midshaft clavicle fractures has an eight-fold lower risk of reoperation compared to single plate fixation, while accounting for age, smoking, and high-risk fracture morphology. More specifically, dual plating had lower rates of reoperation than both single plating with anterior and superior placement. When operative management is indicated for a midshaft clavicle fracture, dual plating may be an excellent treatment alternative in patients at high risk for reoperation.
Background:
Untreated chronic massive rotator cuff tears and primary osteoarthritis can lead to conditions of significant retroversion, posterior bone loss, and humeral head subluxation.
Indications:
...Reverse total shoulder arthroplasty with humeral head autograft glenoid reconstruction may be indicated in patients with advanced glenohumeral osteoarthritis and/or severe glenoid retroversion/bone loss due to rotator cuff arthropathy, trauma, primary, or inflammatory osteoarthritis.
Technique:
Besides routine radiography and preoperative computed tomography (CT) scans, 3-dimensional (3D) planning software is often performed as a routine part of preoperative planning. A 3D printed model of the glenoid can also be helpful in cases of significant bone deformity. Patients are placed in a 45° modified beach chair position. Using a standard deltopectoral approach, the glenoid is exposed. An anatomic humeral head resection is made. The contour of the articular margin of the humeral head should match the glenoid bone deficiency anatomically as it has been chronically resting within the glenoid defect. Three dimensional preoperative planning and the 3D printed model are used to make an asymmetric humeral head autograft which should match the deficiency perfectly. The articular cartilage is removed with a burr. The graft and baseplate are coupled together (metaphyseal bone facing the baseplate and prepared articular side of the graft facing native bone) and measurements are performed with the preoperative planning software to fashion a graft with the appropriate dimension and with the desired amount of lateralization. The bone graft is then compressed with the baseplate to the native glenoid and fixed with screws.
Results:
In select patients with careful preoperative planning, excellent outcomes can be achieved with careful gradual resumption of range of motion and strength with physical therapy. Sequential radiographic imaging is performed up to 6 months and beyond to confirm solid union of graft to native glenoid bone and incorporation into the baseplate.
Discussion/Conclusion:
Reverse total shoulder arthroplasty (rTSA) with humeral head autograft glenoid reconstruction is an excellent option to address severe glenoid bone loss and restore the native joint line for both primary osteoarthritis and rotator cuff arthropathy. Using 3D CT scans, 3D preoperative planning software and 3D printing of the glenoid can help achieve a good outcome.
Patient Consent Disclosure Statement:
The author(s) attests that consent has been obtained from any patient(s) appearing in this publication. If the individual may be identifiable, the author(s) has included a statement of release or other written form of approval from the patient(s) with this submission for publication.
Graphical Abstract
This is a visual representation of the abstract.
Background:
Arthroscopic transosseous-equivalent (TOE) techniques may offer additional advantages, including a more efficient surgery with a self-reinforcing construct with equivalent clinical ...results to medial knotted TOE repair for rotator cuff tears (RCTs).
Indications:
An arthroscopic knotless double-row (DR) rotator cuff repair (RCR) using FiberTak RC anchors for medial row fixation with box configuration may be an appropriate construct for operatively indicated small-to-moderate full-thickness RCTs.
Technique:
Our modified technique uses TOE repair principles to address RCTs too small for traditional 4.75-mm anchors using medial row fixation and too large to apply a single medial to lateral anchor repair. The patient is placed in a beach chair position. In addition to standard anterior and posterior portals, a lower lateral working portal and a higher posterolateral viewing portal are made. Subsequent to supraspinatus footprint visualization/preparation, two 2.6-mm FiberTak RC anchors each loaded with 1 LabralTape and 1 FiberWire are placed medially. The 4 sets of sutures for one anchor are placed through the rotator cuff tendon together in 1 spot and the process is repeated for the second anchor. One FiberWire from each anchor is then tied extracorporeally and then a double pulley technique is used to compress the medial aspect of the repair at the footprint in a box configuration. Finally, 1 limb of LabralTape from each of the medial anchors along with the corresponding FiberWire is secured through 2 lateral-row 4.75-mm anchors anteriorly and posteriorly to restore the lateral footprint and secure the rotator cuff in TOE box configuration. This modified technique can provide anatomical compression of the rotator cuff tendon at the footprint with additional medial compression achieved by the box configuration while taking advantage of knotless fixation.
Results:
Postoperatively, a sling is worn for 4 weeks, passive range of motion (ROM) is initiated at 2 weeks, active ROM is begun at 6 weeks, and strengthening at 3 months. Patients may return to full unrestricted activities around 5 to 6 months.
Discussion/Conclusion:
A modified arthroscopic DR RCR with box configuration is an excellent treatment option for patients with small-to-moderate full-thickness RCT who fail conservative treatment.
Patient Consent Disclosure Statement:
The author(s) attests that consent has been obtained from any patient(s) appearing in this publication. If the individual may be identifiable, the author(s) has included a statement of release or other written form of approval from the patient(s) with this submission for publication.
Graphical Abstract
This is a visual representation of the abstract.
Background:
Trapezius palsy can occur due to traumatic or idiopathic spinal accessory nerve injury. As a result of trapezius palsy, shoulder girdle imbalance can develop and present as lateral ...scapular winging and diminished shoulder range of motion and function. The modified Eden-Lange triple-tendon transfer procedure is a notable salvage operation which can treat chronic trapezius palsy after failure of conservative and nonsalvage interventions.
Indications:
A 42-year-old right-hand dominant woman who underwent a cervical lymph node biopsy 3 years before presents with chronic left shoulder weakness, severe shoulder pain, and scapular winging. On presentation, she has failed conservative treatments and operative interventions including attempted spinal accessory nerve exploration and repair with ansa cervicalis autograft.
Technique Description:
A modified Eden-Lange triple-tendon transfer, using the Elhassan modification, was performed to treat the patient’s chronic trapezius palsy. The levator scapulae, rhomboid minor, and rhomboid major were sequentially transferred to the lateral scapular spine, central scapular spine, and medial scapular spine, respectively.
Results:
At interval follow-up, the patient was recovering well from her operation and with progressively improving range of motion and strength.
Discussion/Conclusion:
The modified Eden-Lange triple-tendon transfer technique is a salvage procedure for treating chronic trapezius palsy by anatomically reconstructing the force vectors of the native trapezius muscle. Effective restoration of proper scapular and shoulder kinematics via the triple-tendon transfer technique can result in improved pain and shoulder girdle function.
The author(s) attests that consent has been obtained from any patient(s) appearing in this publication. If the individual may be identifiable, the author(s) has included a statement of release or other written form of approval from the patient(s) with this submission for publication.
Graphical Abstract
This is a visual representation of the abstract.
