Increasing incidence of primary shoulder arthroplasty in Finland - a nationwide registry study

Background: The incidence of shoulder arthroplasties is reportedly increasing and the types of arthroplasty are changing. The purpose of this study was to investigate the incidence of primary shoulder arthroplasty in Finland.Methods: We analyzed nationwide data from the Finnish Arthroplasty Register (FAR) and the Finnish National Hospital Discharge Register (NHDR) during time period 2004-2015. The primary outcome variable was the incidence of shoulder arthroplasty per 100,000 person-years stratified by age, sex and year of surgery. The secondary outcome variables were surgical indication, arthroplasty type and prosthesis model.Results: The number of primary shoulder arthroplasties was 7504 (women = 4878, men = 2625). The rate of operations increased from 6 to 15 per 100,000 person-years among men, and 11 to 26 per 100,000 person-years among women. The indication for arthroplasty was osteoarthritis in 56%, acute fracture in 21%, inflammatory arthritis in 13%, and rotator cuff arthropathy in 4% of the cases. Hemiarthroplasties accounted for 66%, total shoulder arthroplasties 8%, and reverse shoulder arthroplasties 12% of the cases, 14% of the cases was missing. During the 12-year study period the incidence of hemiarthroplasties decreased by 23% and the number of total shoulder and reverse shoulder arthroplasty increased by 500 and 4500%, respectively.Conclusions: The incidence of primary shoulder arthroplasty has increased by 160% during the study period in Finland. The incidence of hemiarthroplasties decreased while total and reverse shoulder arthroplasties increased

Radiographic geometry and clinical glenohumeral range of motion after reverse shoulder athroplasty, a retrospective cohort study

BackgroundThe range of motion (ROM) in reverse shoulder arthroplasty (RSA), is mechanically limited by the surrounding bony obstacles especially in abduction and rotation planes. However, the clinical effect of implant positioning, prosthesis design, and individual differences in bone morphology, on ROM is obscure. The aim of this study was to investigate the correlation between radiographic geometry and clinical glenohumeral (GH) ROM after RSA.MethodsRSA patients operated at Turku University Hospital during 2007–2013 were called for radiological and clinical follow-up. Pre- and postoperative true anteroposterior radiographs were obtained and the positioning of the center of rotation (COR) in relation to the surrounding bony structures was measured. Active and passive shoulder and GH abduction, flexion, internal and external rotation ROM were measured with goniometer. The Constant score (CS) and pain visual analogue scale (VAS) were recorded. The correlation between the radiographically measured parameters and the active and passive ROM and clinical outcome was statistically analyzed.Results91 shoulders were available for analyses with a mean follow-up of 38.7 months ± SD 20 (range 12–83) months. 77% of the patients were female, the mean age was 73 (SD 9) years. The mean angle between the line of supraspinatus fossa, and the line between COR and lateral edge of the acromion (α-angle) was 127° (SD 14) and the mean angle between the lines from lateral edge of the acromion to COR, and from there to the superior edge of the greater tubercle (β-angle) was 54° (SD 11). The mean active shoulder flexion at follow-up was 118° (SD 26), abduction 104° (SD 32), external rotation 41° (SD 22), internal rotation 77° (SD 21). The mean passive GH flexion was 80° (SD 19), abduction 67° (SD 15), external rotation 31° (SD 16) and internal rotation 34° (SD 14). The mean Constant score at follow-up was 53 (SD 18) and pain VAS 2 (SD 3). The positioning of the radiographically measured COR did not statistically significantly correlate with the ROM or clinical outcome scores.ConclusionsPostoperative radiographically measured two-dimensional geometry and positioning of the COR does not significantly correlate with the glenohumeral range of motion or clinical results after RSA.</p

Olkanivelen varreton kokotekonivel: lyhyen seuranta-ajan kliiniset ja radiologiset tulokset TYKS:ssa

Noin kolmanneksella yli 60-vuotiaista esiintyy radiologisesti todettavaa olkanivelen nivelrikkoa. Vaikeaan olkanivelen nivelrikkoon liittyy potilaan kokemaa kipua ja olkanivelen toimintakyvyn laskua sekä elämänlaadun heikkenemistä. Vaikean olkanivelrikon tehokas hoitomuoto on kokotekonivelleikkaus. Sillä voidaan vähentää potilaan kokemaa kipua, parantaa toimintakykyä ja kohentaa potilaan elämänlaatua. Perinteisesti olkanivelen kokotekonivel on ollut lapaluun komponentista ja varrellisesta olkaluun komponentista koostuva tekonivel. Olkaluukomponentin varrellisuuteen liittyy kuitenkin haasteita, etenkin nupin asemoinnin kannalta. Näitä haasteita vastaamaan tuli markkinoille 2000-luvun alussa varreton tekonivel. TYKS:ssa otettiin käyttöön varreton tekonivel olkanivelrikon hoidoksi keväällä 2012. Syventävien opintojeni tutkimuksen tarkoituksena on selvittää olkanivelen nivelrikon vuoksi TYKS:ssa asetettujen olkanivelen varrettomien kokotekonivelten kliiniset ja radiologiset tulokset lyhyen seuranta-ajan aikana. Tutkimuksen aineistoksi valittiin aikavälillä 21.5.2012–18.3.2014 kaikki perättäiset varrettomalla kokotekonivelellä olkanivelen vaikean nivelrikon vuoksi operoidut potilaat. Potilaat kutsuttiin TYKS:aan kliinistä ja radiologista tutkimusta varten. Tutkimuksen päävastemuuttujana käytettiin potilaan olkapään oiretta ja toimintakykyä kuvaavaa Constant Score -pisteytystä. Lisäksi potilaat arvioivat olkapäänsä tilaa Subjective Shoulder Value -asteikolla (SSV) ja ilmoittivat tyytyväisyytensä hoitotulokseen (kyllä/ei). Radiologisesti potilaiden preoperatiiviset sekä postoperatiiviset röntgenkuvat arvioitiin. Leikattujen potilaiden Constant Score oli postoperatiivisesti keskimäärin 72,1 pistettä. SSV oli keskimäärin 90,4 %. Potilaista 93,2 % oli tyytyväisiä leikkaukseen. Komplikaatioita esiintyi neljällä potilaalla (9 %). Havaituista komplikaatioista kolme oli hermovaurioita ja yksi potilas sai postoperatiivisesti aivoinfarktin. Olkanivelen varrettoman tekonivelen asemoinnin karkea visuaalinen arvio korreloi merkittävästi kliinisiin tuloksiin (p=0.04). Kuitenkaan yksittäisillä röntgenkuvista mitatuilla suureilla ei havaittu selvää tilastollista yhteyttä tuloksiin. Koska hermovaurioilla on yhteys huonompiin kliinisiin tuloksiin, on näiden syntyä pyrittävä välttämään. Vaikka alustavat tulokset olkanivelen varrettomasta tekonivelestä ovat hyvät, on jatkoseuranta kuitenkin tarpeen.Siirretty Doriast

Radiographic geometry and clinical glenohumeral range of motion after reverse shoulder athroplasty, a retrospective cohort study

Background: The range of motion (ROM) in reverse shoulder arthroplasty (RSA), is mechanically limited by the surrounding bony obstacles especially in abduction and rotation planes. However, the clinical effect of implant positioning, prosthesis design, and individual differences in bone morphology, on ROM is obscure. The aim of this study was to investigate the correlation between radiographic geometry and clinical glenohumeral (GH) ROM after RSA. Methods: RSA patients operated at Turku University Hospital during 2007–2013 were called for radiological and clinical follow-up. Pre- and postoperative true anteroposterior radiographs were obtained and the positioning of the center of rotation (COR) in relation to the surrounding bony structures was measured. Active and passive shoulder and GH abduction, flexion, internal and external rotation ROM were measured with goniometer. The Constant score (CS) and pain visual analogue scale (VAS) were recorded. The correlation between the radiographically measured parameters and the active and passive ROM and clinical outcome was statistically analyzed. Results: 91 shoulders were available for analyses with a mean follow-up of 38.7 months ± SD 20 (range 12–83) months. 77% of the patients were female, the mean age was 73 (SD 9) years. The mean angle between the line of supraspinatus fossa, and the line between COR and lateral edge of the acromion (α-angle) was 127° (SD 14) and the mean angle between the lines from lateral edge of the acromion to COR, and from there to the superior edge of the greater tubercle (β-angle) was 54° (SD 11). The mean active shoulder flexion at follow-up was 118° (SD 26), abduction 104° (SD 32), external rotation 41° (SD 22), internal rotation 77° (SD 21). The mean passive GH flexion was 80° (SD 19), abduction 67° (SD 15), external rotation 31° (SD 16) and internal rotation 34° (SD 14). The mean Constant score at follow-up was 53 (SD 18) and pain VAS 2 (SD 3). The positioning of the radiographically measured COR did not statistically significantly correlate with the ROM or clinical outcome scores. Conclusions: Postoperative radiographically measured two-dimensional geometry and positioning of the COR does not significantly correlate with the glenohumeral range of motion or clinical results after RSA. Level of evidence: Level 3, retrospective cohort studypublishedVersionPeer reviewe

Additional file 1: of Increasing incidence of primary shoulder arthroplasty in Finland – a nationwide registry study

The protocol for combining the FAR and NHDR diagnostic data according to NARA diagnosis categories. The NHDR diagnoses for other osteoarthritis, other fracture sequelae, other inflammatory arthritis, other fracture are presented in Additional file 2. (DOCX 13 kb

Increasing incidence of primary shoulder arthroplasty in Finland – a nationwide registry study

Abstract Background The incidence of shoulder arthroplasties is reportedly increasing and the types of arthroplasty are changing. The purpose of this study was to investigate the incidence of primary shoulder arthroplasty in Finland. Methods We analyzed nationwide data from the Finnish Arthroplasty Register (FAR) and the Finnish National Hospital Discharge Register (NHDR) during time period 2004–2015. The primary outcome variable was the incidence of shoulder arthroplasty per 100,000 person-years stratified by age, sex and year of surgery. The secondary outcome variables were surgical indication, arthroplasty type and prosthesis model. Results The number of primary shoulder arthroplasties was 7504 (women = 4878, men = 2625). The rate of operations increased from 6 to 15 per 100,000 person-years among men, and 11 to 26 per 100,000 person-years among women. The indication for arthroplasty was osteoarthritis in 56%, acute fracture in 21%, inflammatory arthritis in 13%, and rotator cuff arthropathy in 4% of the cases. Hemiarthroplasties accounted for 66%, total shoulder arthroplasties 8%, and reverse shoulder arthroplasties 12% of the cases, 14% of the cases was missing. During the 12-year study period the incidence of hemiarthroplasties decreased by 23% and the number of total shoulder and reverse shoulder arthroplasty increased by 500 and 4500%, respectively. Conclusions The incidence of primary shoulder arthroplasty has increased by 160% during the study period in Finland. The incidence of hemiarthroplasties decreased while total and reverse shoulder arthroplasties increased

Additional file 4: of Increasing incidence of primary shoulder arthroplasty in Finland – a nationwide registry study

The number of annual arthroplasties for primary shoulder arthroplasty. (DOCX 13 kb