Short to midterm outcomes of one hundred and seventy one MoPyC radial head prostheses: meta-analysis

Laumonerie, Pierre; Tibbo, Meagan E.; Kerezoudis, Panagiotis; Gauci, Marc-Olivier; Reina, Nicolas; Bonnevialle, Nicolas; Mansat, Pierre

doi:10.1007/s00264-018-4070-0

Cited by 18 publications

(4 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Osteolysis below the neck of a radial head implant has only been investigated in a handful of studies. Laumonerie et al found osteolysis around the neck of the implant in 33% of patients after implantation of the MopYc prosthesis [29]. The authors performed a meta-analysis, reporting on a total of 171 patients, and explained the high rate of proximal loosening with the auto-expanding mechanism of the pressfit implant, leading to stress shielding.…”

Section: Discussionmentioning

confidence: 99%

Prosthetic replacement of the radial head

et al. 2020

View full text Add to dashboard Cite

Background Radial head replacement is an established option in patients with comminuted radial head fractures and complex elbow trauma. While studies demonstrated that asymptomatic radiolucencies around the stem are common, the incidence and clinical significance of bone loss at the proximal part of the radius, just distal to the neck of the prosthesis (collar resorption), is unknown. Objectives The aim of this retrospective study was to analyse the incidence of collar resorption after radial head replacement and investigate whether this correlates with specific patient characteristics such as gender, age, indication for index surgery and the size of implant used. Materials and methods The study group consisted of 30 patients (average age 60.1 years) having undergone prosthetic replacement with a monopolar press-fit implant of the radial head at an average follow-up of 23 months. Indications for surgery included trauma sequelae or revision in 16 patients and acute, unreconstructable fractures of the radial head in 14 cases. Symptoms of loosening and revision surgery were recorded. Radiographs were analysed for signs of lucency between the bone and the implant as well as for signs of resorption of bone mass around the neck (section 1). These values were correlated with age, gender, indication for index surgery and size of implant. Results In all, 28/30 (93.3%) prostheses showed proximal osteolysis around the neck of the shaft. Of the 30, one prosthesis presented signs of shaft loosening. The average amount of osteolysis was 8.78% (range 0–26.1%; ±6.0%) of the overall length of the prosthetic shaft (OL). There was no significant difference (p = 0.49) between the amount of resorption in section 1 between the primary fracture cases (8.75 ± 4.5%; range 1.2–15.8%) and the group of secondary implantations due to degeneration or fracture sequelae (8.8 ± 7.2%; range 0–26.1%). Furthermore, the analysis did not reveal any statistically relevant correlations between the amount of neck resorption and the other cohort characteristics (age, gender, size of the components). Conclusions In the study cohort, a high amount of osteolysis/bone resorption was assessed around the neck of the press-fit radial head prosthesis used. However, no significant correlation between collar resorption, patient demographics and indication for index surgery was found at short-term follow-up.

show abstract

Section: Discussionmentioning

confidence: 99%

Prosthetic replacement of the radial head

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The mean flexion-extension arc is described with 124.7°, the mean pronation is described with 77.0°, and supination is described with 76.8°. 16 For the Evolve ® prosthesis, in the study by Laflamme et al was described an average Mayo Elbow Performance Index (MEPI) of 97, with 1 out of 100 points for 21 patients and a follow-up period of 10.4 (2.0 -15.1) years. The revision rate of 0% is lower than in group 1.…”

Section: Discussionmentioning

confidence: 99%

“…In the meantime, however, some second-generation prostheses have established themselves and in some cases they have achieved very good results. [11][12][13][14][15][16][17] The aim of this study was to evaluate two of the prosthesis models that are used by the present authors with regards to their clinical and functional outcomes in acute care.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of two different types of radial head prosthesis in practical use. Using either Evolve® or MoPyC® radial head prosthesis in the treatment of comminuted radial head fractures

et al. 2020

View full text Add to dashboard Cite

The aim of this retrospective study was to undertake a comparative evaluation of the Evolve® modular metallic radial head implant prosthesis and the MoPyC® pyrocarbon prosthesis in acute care. Seventyfive patients having a comminuted radial head fracture with an Evolve® prosthesis (=G1) and 11 with a MoPyC® prosthesis (=G2) were available for a follow-up. Postoperative patient outcomes were evaluated according to a standardized follow-up protocol which included the Morrey rating system. Assessment criteria were range of motion (ROM), functional scores, and rate of complications. G1 showed a mean Morrey score of 86 points. Four direct prosthesis complications were observed in this group (n=75). The average achieved Morrey score in G2 was 84 points. In this group (n=11), 2 direct prosthesis complications were diagnosed. The average range of motion did not differ greatly between both groups. Radial head replacement with either prosthesis yielded sufficient to satisfactory results in a mid-term perspective regarding the range of motion and function of the elbow joint when performed in carefully selected patients. The Evolve® Prothesis appears to show a slightly lower rate of complication by way of a similar functional outcome.

show abstract

“…In der chronisch symptomatischen Situation bietet der prothetische Ersatz des Radiuskopfes eine Therapiemöglichkeit. Trotz zuverlässiger Ergebnisse der Radiuskopfprothetik, wie in mehreren Studien nachgewiesen werden konnte [2,3], sind auch spezifische Komplikationen bekannt. Eine schwerwiegende Komplikation ist die Fehlimplantation der Prothese, sodass ein sog.…”

unclassified