ArticleDer Orthopade2017
Pyrocarbon interposition shoulder arthroplasty in advanced collapse of the humeral head.
Article in Der Orthopade, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
12 citing papers in PubMed, 29 citations in OpenAlex.
- Pyrocarbon implants in shoulder arthroplasty: a systematic review and meta-analysis.JSES reviews, reports, and techniques · 2026Review
- How to measure humeral medialization and upward migration after shoulder hemiarthroplasty.JSES international · 2026Article
- Long-Term Outcomes of Pyrocarbon Hemiarthroplasty in a Young Patient with Severe Chondrolysis.The archives of bone and joint surgery · 2026Article
- Long-term outcomes of metallic hemiarthroplasty for degenerative and inflammatory shoulder pathologies; a systematic review of minimum 10-year follow-up.JSES international · 2026Review
- Humeral head avascular necrosis: etiology, diagnosis, and management.Clinics in shoulder and elbow · 2025Article
- Pyrocarbon hemiarthroplasty and the shoulder: biomechanical and clinical results of an emerging treatment option.Clinics in shoulder and elbow · 2024Article
- Can Pyrocarbon be used as a functional spacer for the treatment of recalcitrant shoulder infections?JSES international · 2024Article
- Midterm results of pyrocarbon interposition shoulder arthroplasty: good outcomes after posttraumatic osteonecrosis without malunion of the tuberosities.JSES international · 2022Article
- Single-Stage Bilateral Stemless Shoulder Hemiarthroplasty using a Subscapularis-Sparing Approach for Bilateral Dysbaric Osteonecrosis of the Humeral Head in a Diver: A Case Report.Journal of orthopaedic case reports · 2021Article
- Pyrocarbon Humeral Head in a Shoulder Hemiarthroplasty: Preliminary Results at 3 Years Follow-Up and Review of the Current Literature.Case reports in orthopedics · 2021Article
- Pyrolytic carbon humeral head in hemi-shoulder arthroplasty: preliminary results at 2-year follow-up.JSES open access · 2019Article
- Comparison of shoulder replacement to treat osteoarthritis secondary to instability surgery and primary osteoarthritis: a retrospective controlled study of patient outcomes.International orthopaedics · 2018Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundPyrocarbon (PyC) interposition shoulder arthroplasty can be used to treat advanced collapse of the humeral head after avascular necrosis.
objectivesWe examined outcomes for this bone-preserving implant which has a PyC coating and a novel biomechanical concept. MATERIALS AND
methodsFor a minimum of 2 years, we followed 10 patients (4 men, 6 women, 55.6 ± 12.9 years) treated with a free interposition PyC arthroplasty ("snookerball") due to advanced humeral head collapse but with an intact glenoid and rotator cuff. Anteroposterior radiographs, the Constant score (CS), adjusted CS, DASH score, and the EuroQol 5D-5L score from the preoperative and the latest follow-up presentation were compared.
resultsAt a mean of 3.6 years (±15 months), the mean absolute CS was 70.6 (±13.6; adjusted CS 81.4 ± 16.4), the DASH score was 25.6 (±16.1), the mean EQ subjective VAS score was 72.6 (±15.9), and the EQ index score was 0.9 (±0.11). Scores improved: CS: +63.2 ± 12.9; adjusted CS: +72.9 ± 15.5; DASH: +47.2 ± 14.7; EQ VAS: +42.6 ± 16.8; EQ index score +0.52 ± 0.23. Mean glenoid erosion was 1.4 mm (±1.3 mm), thinning of the tuberosities was -0.8 mm (±3.3 mm), and superior migration of the implant was 2.0 mm (±2.2). A thin radiolucent zone around the implant with bone densification on the metaphyseal side was observed in all cases (mean 1.8 ± 0.6 mm).
conclusionsExcellent improvement of function and quality of life which are comparable to total shoulder arthroplasty data were observed. Significant bone remodeling occurs in the metaphysis around the implant. Further studies are needed to evaluate longevity and applicability of the implant. These results indicate that advanced collapse of the humeral head with an intact glenoid and rotator cuff are an optimal indication for this implant.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.