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Luthringer TA, Horneff JG, Abboud JA. Stemless Reverse Shoulder Arthroplasty. J Am Acad Orthop Surg 2024; 32:e63-e72. [PMID: 37816186 DOI: 10.5435/jaaos-d-23-00075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Accepted: 08/20/2023] [Indexed: 10/12/2023] Open
Abstract
Since the Food and Drug Administration (FDA) approval nearly two decades ago, the indications for and utilization of reverse shoulder arthroplasty (RSA) have expanded considerably. Stemless RSA designs have been used in Europe since 2005, but have only recently been introduced in domestic Investigational Device Exemption trials. Potential advantages of stemless RSA are similar to those of stemless anatomic total shoulder arthroplasty, which may include fewer shaft-related complications, avoidance of stress shielding, bone preservation, and easier revision surgery. European data support similar outcomes between certain stemless RSA prostheses compared with that of stemmed RSA implants at early and mid-term follow-up. However, long-term outcomes remain to be seen and differences exist between the stemless RSA designs used in Europe and those being studied in domestic clinical trials. An understanding of the potential advantages and disadvantages of stemless RSA, differences between existing designs, and reported clinical outcomes is prudent for the safe and meaningful implementation of this new technology in the United States.
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Affiliation(s)
- Tyler A Luthringer
- From the Rothman Orthopaedic Institute, Philadelphia, PA (Luthringer and Abboud), the Carolina Orthopaedic and Neurosurgical Associates, Greenville-Spartanburg, SC (Luthringer), and the University of Pennsylvania, Philadelpha, PA (Horneff)
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Authom T, Lascar T, Wahab H, Gournay A, Beaudouin E, Muller JH, Saffarini M, Nourissat G. Mid-Term to Long-Term Follow-Up of Stemless Anatomic Total Shoulder
Arthroplasty. J Shoulder Elb Arthroplast 2023; 7:24715492231163055. [PMID: 36968299 PMCID: PMC10031594 DOI: 10.1177/24715492231163055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 01/24/2023] [Accepted: 02/19/2023] [Indexed: 03/24/2023] Open
Abstract
Background The purpose was to report mid-term to long-term clinical outcomes in a
multicentre series of patients who received stemless total shoulder
arthroplasty (TSA). The hypothesis was that stemless TSA would be a safe and
effective treatment with satisfactory clinical outcomes. Methods Authors retrospectively reviewed records of 62 stemless TSAs implanted
between March 2013 and December 2014. Six were excluded because they had
fractures or muscular impairment, which left 56: primary osteoarthritis
(n = 49), rheumatoid arthritis (n = 4), avascular necrosis (n = 1), or
glenoid dysplasia (n = 2). Outcomes were absolute Constant Score (CS),
age-/sex-adjusted CS, and the American Shoulder and Elbow Surgeons (ASES)
score. Proportions of patients that achieved substantial clinical benefits
for absolute CS and ASES scores were determined. Results Of the 56 patients, 8 (14%) died (unrelated to TSA), 5 (9%) were lost to
follow-up, and 2 (4%) refused participation. One patient was reoperated for
infection with implant removal (excluded from analysis), and one for
periprosthetic fracture without implant removal. At 7.6 ± 0.5 years (range
6.8-9.3), the remaining 40 patients, aged 71.0 ± 8.5 years, achieved net
improvements of 40.7 ± 15.8 (CS), 62%±23% (age-/sex-adjusted CS), and
59.7 ± 16.4 (ASES). Of patients with complete absolute CS (n = 37) and ASES
score (n = 28), respectively, 33 (89%) and 27 (96%) achieved substantial
clinical benefits. Conclusions Stemless TSA yields improvements in functional outcomes at mid-term to
long-term that exceed the substantial clinical benefits of the absolute CS
and ASES score at a mean follow-up of 7.6 years. Although the findings of
this study revealed low complications and revision rates, more studies are
needed to confirm long-term benefits of stemless TSA. Level of evidence IV, case series.
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Affiliation(s)
| | | | | | | | | | | | - Mo Saffarini
- ReSurg S.A., Nyon, Switzerland
- Mo Saffarini, ReSurg S.A., Rue Saint-Jean
22, 1260 Nyon, Switzerland.
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Baumgarten KM. Is stemless total shoulder arthroplasty indicated in elderly patients? J Shoulder Elbow Surg 2023; 32:260-268. [PMID: 36162630 DOI: 10.1016/j.jse.2022.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 07/24/2022] [Accepted: 08/03/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND AND HYPOTHESIS Stemmed anatomic total shoulder arthroplasty has represented the gold standard for the treatment of glenohumeral osteoarthritis with an intact rotator cuff for decades. To the author's knowledge, no study has specifically examined the outcomes of stemless, modular total shoulder arthroplasty in elderly patients. The hypothesis of this study was that stemless anatomic total shoulder arthroplasty in elderly patients (age ≥70 years) would have equivalent clinical and radiographic outcomes compared with a younger population (age <70 years). MATERIALS AND METHODS A prospectively collected database of patients undergoing primary, modular, stemless anatomic total shoulder arthroplasty for osteoarthritis was retrospectively reviewed. Patient-determined outcomes including the Western Ontario Osteoarthritis Index (WOOS) score, American Shoulder and Elbow Surgeons (ASES) score, Single Assessment Numeric Evaluation (SANE) score, Simple Shoulder Test score, and Shoulder Activity Level score were recorded preoperatively and postoperatively at 1 year and 2 years. Preoperative and 1-year postoperative range of motion was recorded. Postoperative radiographs were examined to assess for radiographic evidence of complications. RESULTS Stemless arthroplasty was planned in 116 patients. Seven patients underwent conversion intraoperatively to a stemmed prosthesis. There was no difference between patients aged <70 yr and those aged ≥70 years who required intraoperative deviation from the preoperative plan to a stemmed prosthesis (5.8% vs 6.4%, P = .90). At the time of stemless arthroplasty, 64 patients were aged <70 yr and 44 patients were aged ≥70 years. Between the 2 groups, there were no clinically or statistically significant differences in WOOS, ASES, and SANE scores at baseline, 1-year follow-up, or 2-year follow-up. The changes in all scores from baseline to 2 years were similar between the group aged <70 yr and the group aged ≥70 years. There was no difference in the percentage of patients achieving the minimal clinically important difference or substantial clinical benefit in either group after shoulder arthroplasty at 2-year follow-up. There was no difference between the 2 groups in terms of final postoperative range of motion or change in range of motion for any metric examined. There was no evidence of radiographic complications in either group. CONCLUSIONS Age ≥70 years does not appear to be a contraindication to stemless anatomic total shoulder arthroplasty. Postoperative improvements in patient-determined outcome scores, the percentage of patients achieving clinically important outcomes for the ASES, SANE, and WOOS scores, and postoperative range of motion were similar between patients aged <70 yr and those aged ≥70 years. There was no difference between the groups regarding the patients who required intraoperative deviation from the preoperatively planned stemless prosthesis to a stemmed prosthesis. Neither age group demonstrated a radiographically apparent complication.
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Affiliation(s)
- Keith M Baumgarten
- Orthopedic Institute, Sioux Falls, SD, USA; University of South Dakota Sanford School of Medicine, Sioux Falls, SD, USA.
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Levin JM, Rodriguez K, Polascik BA, Zeng S, Warren E, Rechenmacher A, Helmkamp J, Goltz DE, Wickman J, Klifto CS, Lassiter TE, Anakwenze O. Simple preoperative radiographic and computed tomography measurements predict adequate bone quality for stemless total shoulder arthroplasty. J Shoulder Elbow Surg 2022; 31:2481-2487. [PMID: 35671925 DOI: 10.1016/j.jse.2022.05.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 05/01/2022] [Accepted: 05/07/2022] [Indexed: 02/01/2023]
Abstract
INTRODUCTION Although there is increased utilization of stemless humeral implants in anatomic total shoulder arthroplasty (TSA), there are inadequate objective metrics to evaluate bone quality sufficient for fixation. Our goals are to: (1) compare patient characteristics in patients who had plans for stemless TSA but received stemmed TSA due to intraoperative assessments and (2) propose threshold values of bone density, using the deltoid tuberosity index (DTI) and proximal humerus Hounsfield units (HU), on preoperative X-ray and computed tomography (CT) to allow for preoperative determination of adequate bone stock for stemless TSA. METHODS This is an observational study conducted at an academic institution from 2019 to 2021, including consecutive primary TSAs templated to undergo stemless TSA based on 3-dimensional CT preoperative plans. Final implant selection was determined by intraoperative assessment of bone quality. Preoperative X-ray and CT images were assessed to obtain DTI and proximal humeral bone density in HU, respectively. A receiver operating characteristic curve was used to analyze the potential of preoperative X-ray and CT to classify patients as candidates for stemless TSA. RESULTS A total of 61 planned stemless TSAs were included, with 56 (91.8%) undergoing stemless TSA and 5 (8.2%) undergoing stemmed TSA after intraoperative assessment determined that the bone quality was inadequate for stemless fixation. There were no significant differences between the 2 groups in terms of gender (P = .640), body mass index (P = .296), and race (P = .580). The stem cohort was significantly older (mean age 69 ± 12 years vs. 59 ± 10 years, P = .029), had significantly lower DTI (1.45 ± 0.13 vs. 1.68 ± 0.18, P = .007), and had significantly less proximal humeral HU (-1.4 ± 17.7 vs. 78.8 ± 52.4, P = .001). The receiver operating characteristic curve for DTI had an area under the curve (AUC) of 0.86, and bone density in HU had an AUC of 0.98 in its ability to distinguish patients who underwent stemless TSA vs. short-stem TSA. A threshold cutoff of 1.41 for DTI resulted in a sensitivity of 98% and a specificity of 60%, and a cutoff value of 14.4 HU resulted in a sensitivity of 95% and a specificity of 100%. CONCLUSIONS Older age, lower DTI, and less proximal humeral bone density in HU were associated with the requirement to switch from stemless to short-stem humeral fixation in primary TSA. Preoperative DTI had good ability (AUC of 0.86) and preoperative HU had excellent ability (AUC of 0.98) to categorize patients as appropriate for stemless TSA. This can help surgeons adequately plan humeral fixation using standard preoperative imaging data.
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Affiliation(s)
- Jay M Levin
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA.
| | - Kaitlyn Rodriguez
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA
| | - Breanna A Polascik
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA
| | - Steven Zeng
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA
| | - Eric Warren
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA
| | - Albert Rechenmacher
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA
| | - Joshua Helmkamp
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA
| | - Daniel E Goltz
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA
| | - John Wickman
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA
| | - Christopher S Klifto
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA
| | - Tally E Lassiter
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA
| | - Oke Anakwenze
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA
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Park H, Jenkins S, Stetler P, Baker MC, Srikumaran U. Stemless Hemiarthroplasty and Anterior Capsular Reconstruction in the Setting of a Residual Humeral Limb: A Case Report. JBJS Case Connect 2022; 12:01709767-202209000-00044. [PMID: 36099385 DOI: 10.2106/jbjs.cc.22.00225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 07/20/2022] [Indexed: 06/15/2023]
Abstract
CASE We present a 58-year-old left hand-dominant woman with right glenohumeral osteoarthritis and anterior instability in the setting of a congenital residual limb at the level of the mid-humerus. She had persistent pain and dysfunction despite trying conservative treatments and elected for a stemless or "canal-sparing" hemiarthroplasty with anterior capsular reconstruction. At the 2-year follow-up, there was significant improvement in her pain, motion, and function without signs of radiographic loosening. CONCLUSION A stemless humeral implant is a versatile component that can be used in the face of humeral dysplasia, such as this patient with a congenital residual limb.
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Affiliation(s)
- Hannah Park
- University of New England College of Osteopathic Medicine, Biddeford, Maine
| | - Sabrina Jenkins
- The Division of Shoulder Surgery, Department of Orthopaedic Surgery, The Johns Hopkins University, Baltimore, Maryland
| | - Phillip Stetler
- The Division of Shoulder Surgery, Department of Orthopaedic Surgery, The Johns Hopkins University, Baltimore, Maryland
| | | | - Uma Srikumaran
- The Division of Shoulder Surgery, Department of Orthopaedic Surgery, The Johns Hopkins University, Baltimore, Maryland
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Ten Brinke B, Hesseling B, Eygendaal D, Hoelen MA, Mathijssen NMC. Early fixation of the humeral component in stemless total shoulder arthroplasty : a radiostereometric and clinical study with 24-month follow-up. Bone Joint J 2022; 104-B:76-82. [PMID: 34969283 DOI: 10.1302/0301-620x.104b1.bjj-2021-0945.r1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
AIMS Stemless humeral implants have been developed to overcome stem-related complications in total shoulder arthroplasty (TSA). However, stemless implant designs may hypothetically result in less stable initial fixation, potentially affecting long-term survival. The aim of this study is to investigate early fixation and migration patterns of the stemless humeral component of the Simpliciti Shoulder System and to evaluate clinical outcomes. METHODS In this prospective cohort study, radiostereometric analysis (RSA) radiographs were obtained in 24 patients at one day, six weeks, six months, one year, and two years postoperatively. Migration was calculated using model-based RSA. Clinical outcomes were evaluated using the visual analogue scale (VAS), the Oxford Shoulder Score (OSS), the Constant-Murley Score (CMS), and the Disabilities of the Arm, Shoulder and Hand (DASH) score. RESULTS At two years, median translation along the x-, y-, and z-axis was -0.12 mm (interquartile range (IQR) -0.18 to 0.02), -0.17 mm (IQR -0.27 to -0.09), and 0.09 mm (IQR 0.02 to 0.31). Median rotation around the x-, y-, and z-axis was 0.12° (IQR -0.50 to 0.57), -0.98° (IQR -1.83 to 1.23), and 0.09° (IQR -0.76 to 0.30). Overall, 20 prostheses stabilized within 12 months postoperatively. Four prostheses showed continuous migration between 12 and 24 months. At two-year follow-up, with the exception of one revised prosthesis, all clinical scores improved significantly (median VAS difference at rest: -3.0 (IQR -1.5 to -6.0); OSS 22.0 (IQR 15.0 to 25.0); CMS 29.5 (IQR 15.0 to 35.75); and DASH -30.0 (IQR -20.6 to -41.67) (all p < 0.001)) with the exception of one revised prosthesis. CONCLUSION In conclusion, we found that 20 out of 24 implants stabilized within 12 months postoperatively. The significance of continuous migration in four implants is unclear and future research on the predictive value of early migration for future loosening in TSA is required. Clinical results revealed a clinically relevant improvement. Cite this article: Bone Joint J 2022;104-B(1):76-82.
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Affiliation(s)
- Bart Ten Brinke
- Department of Orthopaedic Surgery, Reinier de Graaf Hospital, Delft, Netherlands
| | - Brechtje Hesseling
- Department of Orthopaedic Surgery, Reinier de Graaf Hospital, Delft, Netherlands
| | - Denise Eygendaal
- Department of Orthopaedic Surgery, Erasmus Medical Center, Delft, Netherlands
| | - Max A Hoelen
- Department of Orthopaedic Surgery, Reinier de Graaf Hospital, Delft, Netherlands
| | - Nina M C Mathijssen
- Department of Orthopaedic Surgery, Reinier de Graaf Hospital, Delft, Netherlands
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