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Patient acceptable symptom states after totalhip or knee replacement at mid-term follow-up: Thresholds of the Oxford hip and knee scores.

Keurentjes JC, Van Tol FR, Fiocco M, So-Osman C, Onstenk R, Koopman-Van Gemert AW, Pöll RG, Nelissen RG - Bone Joint Res (2014)

Bottom Line: PASS thresholds appear larger at mid-term follow-up than at six months after surgery.With- out external validation, we would advise against using these PASS thresholds as absolute thresholds in defining whether or not a patient has attained an acceptable symptom state after THR or TKR.Cite this article: Bone Joint Res 2014;3:7-13.

View Article: PubMed Central - PubMed

Affiliation: Leiden University Medical Center, Departmentof Orthopaedic Surgery/Department of Medical Statistics, Albinusdreef2, Room J-09-127, PO Box9600, Postzone J-11-S, 2300RC Leiden, the Netherlands.

ABSTRACT

Objectives: To define Patient Acceptable Symptom State (PASS) thresholds for the Oxford hip score (OHS) and Oxford knee score (OKS) at mid-term follow-up.

Methods: In a prospective multicentre cohort study, OHS and OKS were collected at a mean follow-up of three years (1.5 to 6.0), combined with a numeric rating scale (NRS) for satisfaction and an external validation question assessing the patient's willingness to undergo surgery again. A total of 550 patients underwent total hip replacement (THR) and 367 underwent total knee replacement (TKR).

Results: Receiver operating characteristic (ROC) curves identified a PASS threshold of 42 for the OHS after THR and 37 for the OKS after TKR. THR patients with an OHS ≥ 42 and TKR patients with an OKS ≥ 37 had a higher NRS for satisfaction and a greater likelihood of being willing to undergo surgery again.

Conclusions: PASS thresholds appear larger at mid-term follow-up than at six months after surgery. With- out external validation, we would advise against using these PASS thresholds as absolute thresholds in defining whether or not a patient has attained an acceptable symptom state after THR or TKR. Cite this article: Bone Joint Res 2014;3:7-13.

No MeSH data available.


Related in: MedlinePlus

Receiver operating characteristic (ROC)curve to establish a threshold for the mid-term follow-up Oxfordhip score associated with mid-term satisfaction with surgery. Sensitivity(67.0%) and specificity (65.5%) are in equilibrium when a thresholdof 42 points is chosen. The area under ROC curve (AUC) was 0.72(95% confidence interval 0.60 to 0.84).
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f1: Receiver operating characteristic (ROC)curve to establish a threshold for the mid-term follow-up Oxfordhip score associated with mid-term satisfaction with surgery. Sensitivity(67.0%) and specificity (65.5%) are in equilibrium when a thresholdof 42 points is chosen. The area under ROC curve (AUC) was 0.72(95% confidence interval 0.60 to 0.84).


Patient acceptable symptom states after totalhip or knee replacement at mid-term follow-up: Thresholds of the Oxford hip and knee scores.

Keurentjes JC, Van Tol FR, Fiocco M, So-Osman C, Onstenk R, Koopman-Van Gemert AW, Pöll RG, Nelissen RG - Bone Joint Res (2014)

Receiver operating characteristic (ROC)curve to establish a threshold for the mid-term follow-up Oxfordhip score associated with mid-term satisfaction with surgery. Sensitivity(67.0%) and specificity (65.5%) are in equilibrium when a thresholdof 42 points is chosen. The area under ROC curve (AUC) was 0.72(95% confidence interval 0.60 to 0.84).
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3928564&req=5

f1: Receiver operating characteristic (ROC)curve to establish a threshold for the mid-term follow-up Oxfordhip score associated with mid-term satisfaction with surgery. Sensitivity(67.0%) and specificity (65.5%) are in equilibrium when a thresholdof 42 points is chosen. The area under ROC curve (AUC) was 0.72(95% confidence interval 0.60 to 0.84).
Bottom Line: PASS thresholds appear larger at mid-term follow-up than at six months after surgery.With- out external validation, we would advise against using these PASS thresholds as absolute thresholds in defining whether or not a patient has attained an acceptable symptom state after THR or TKR.Cite this article: Bone Joint Res 2014;3:7-13.

View Article: PubMed Central - PubMed

Affiliation: Leiden University Medical Center, Departmentof Orthopaedic Surgery/Department of Medical Statistics, Albinusdreef2, Room J-09-127, PO Box9600, Postzone J-11-S, 2300RC Leiden, the Netherlands.

ABSTRACT

Objectives: To define Patient Acceptable Symptom State (PASS) thresholds for the Oxford hip score (OHS) and Oxford knee score (OKS) at mid-term follow-up.

Methods: In a prospective multicentre cohort study, OHS and OKS were collected at a mean follow-up of three years (1.5 to 6.0), combined with a numeric rating scale (NRS) for satisfaction and an external validation question assessing the patient's willingness to undergo surgery again. A total of 550 patients underwent total hip replacement (THR) and 367 underwent total knee replacement (TKR).

Results: Receiver operating characteristic (ROC) curves identified a PASS threshold of 42 for the OHS after THR and 37 for the OKS after TKR. THR patients with an OHS ≥ 42 and TKR patients with an OKS ≥ 37 had a higher NRS for satisfaction and a greater likelihood of being willing to undergo surgery again.

Conclusions: PASS thresholds appear larger at mid-term follow-up than at six months after surgery. With- out external validation, we would advise against using these PASS thresholds as absolute thresholds in defining whether or not a patient has attained an acceptable symptom state after THR or TKR. Cite this article: Bone Joint Res 2014;3:7-13.

No MeSH data available.


Related in: MedlinePlus