Effect of arthritis in other compartment after unicompartmental arthroplasty

Ali Mofidi, Bo Lu, Johannes F. Plate, Jason E. Lang, Gary G. Poehling, Riyaz H. Jinnah

Research output: Contribution to journalArticle

Abstract

The purpose of this study is to evaluate the outcome of robotic-assisted (MAKO Surgical Corp.) unicondylar replacement in the treatment for knee osteoarthritis after the initial surgical insult is worn off to evaluate the impact of residual patellofemoral and lateral osteoarthritis on the outcome of medial unicompartmental knee replacement. One hundred and thirty-four patients who underwent uncomplicated 144 robotic-assisted medial unicondylar replacements for knee arthritis were identified and studied. Original radiographs were used to classify severity of patellofemoral and lateral compartmental osteoarthritis in these patients. Severity of patellofemoral and lateral compartmental osteoarthritis was analyzed against Oxford and Knee Society scores and amount of ipsilateral residual knee symptoms at 6 months postoperative period. Preoperative Oxford and Knee Society scores, other comorbidities and long-term disability were studied as confounding variables. We found significant improvement in symptoms and scores in spite of other compartment diseases. Poorer outcome was seen in association with comorbidities and long-term disability but not when radiographic signs of arthritis in the other compartments were present. Six patients required revision of which three had (lateral facet) patellofemoral disease in the original X-rays. In conclusion, there is a higher amount of postoperative retained symptoms, but similar outcome when there is radiographic disease in the other compartments. However, when symptoms are severe enough to necessitate revision, this is due to the lateral facet of patellofemoral compartment and not lateral compartment disease.

Original languageEnglish (US)
Pages (from-to)805-812
Number of pages8
JournalEuropean Journal of Orthopaedic Surgery and Traumatology
Volume24
Issue number5
DOIs
StatePublished - 2014
Externally publishedYes

Fingerprint

Arthroplasty
Arthritis
Osteoarthritis
Knee Replacement Arthroplasties
Robotics
Comorbidity
Confounding Factors (Epidemiology)
Knee Osteoarthritis
Postoperative Period
Knee
X-Rays
Therapeutics

Keywords

  • Arthroplasty
  • Knee
  • Robotics
  • Unicondylar replacement

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine
  • Medicine(all)

Cite this

Effect of arthritis in other compartment after unicompartmental arthroplasty. / Mofidi, Ali; Lu, Bo; Plate, Johannes F.; Lang, Jason E.; Poehling, Gary G.; Jinnah, Riyaz H.

In: European Journal of Orthopaedic Surgery and Traumatology, Vol. 24, No. 5, 2014, p. 805-812.

Research output: Contribution to journalArticle

Mofidi, Ali ; Lu, Bo ; Plate, Johannes F. ; Lang, Jason E. ; Poehling, Gary G. ; Jinnah, Riyaz H. / Effect of arthritis in other compartment after unicompartmental arthroplasty. In: European Journal of Orthopaedic Surgery and Traumatology. 2014 ; Vol. 24, No. 5. pp. 805-812.
@article{ff57b5120b9140b2a53e2c057d09edcd,
title = "Effect of arthritis in other compartment after unicompartmental arthroplasty",
abstract = "The purpose of this study is to evaluate the outcome of robotic-assisted (MAKO Surgical Corp.) unicondylar replacement in the treatment for knee osteoarthritis after the initial surgical insult is worn off to evaluate the impact of residual patellofemoral and lateral osteoarthritis on the outcome of medial unicompartmental knee replacement. One hundred and thirty-four patients who underwent uncomplicated 144 robotic-assisted medial unicondylar replacements for knee arthritis were identified and studied. Original radiographs were used to classify severity of patellofemoral and lateral compartmental osteoarthritis in these patients. Severity of patellofemoral and lateral compartmental osteoarthritis was analyzed against Oxford and Knee Society scores and amount of ipsilateral residual knee symptoms at 6 months postoperative period. Preoperative Oxford and Knee Society scores, other comorbidities and long-term disability were studied as confounding variables. We found significant improvement in symptoms and scores in spite of other compartment diseases. Poorer outcome was seen in association with comorbidities and long-term disability but not when radiographic signs of arthritis in the other compartments were present. Six patients required revision of which three had (lateral facet) patellofemoral disease in the original X-rays. In conclusion, there is a higher amount of postoperative retained symptoms, but similar outcome when there is radiographic disease in the other compartments. However, when symptoms are severe enough to necessitate revision, this is due to the lateral facet of patellofemoral compartment and not lateral compartment disease.",
keywords = "Arthroplasty, Knee, Robotics, Unicondylar replacement",
author = "Ali Mofidi and Bo Lu and Plate, {Johannes F.} and Lang, {Jason E.} and Poehling, {Gary G.} and Jinnah, {Riyaz H.}",
year = "2014",
doi = "10.1007/s00590-013-1250-x",
language = "English (US)",
volume = "24",
pages = "805--812",
journal = "European Journal of Orthopaedic Surgery and Traumatology",
issn = "0948-4817",
publisher = "Springer Verlag",
number = "5",

}

TY - JOUR

T1 - Effect of arthritis in other compartment after unicompartmental arthroplasty

AU - Mofidi, Ali

AU - Lu, Bo

AU - Plate, Johannes F.

AU - Lang, Jason E.

AU - Poehling, Gary G.

AU - Jinnah, Riyaz H.

PY - 2014

Y1 - 2014

N2 - The purpose of this study is to evaluate the outcome of robotic-assisted (MAKO Surgical Corp.) unicondylar replacement in the treatment for knee osteoarthritis after the initial surgical insult is worn off to evaluate the impact of residual patellofemoral and lateral osteoarthritis on the outcome of medial unicompartmental knee replacement. One hundred and thirty-four patients who underwent uncomplicated 144 robotic-assisted medial unicondylar replacements for knee arthritis were identified and studied. Original radiographs were used to classify severity of patellofemoral and lateral compartmental osteoarthritis in these patients. Severity of patellofemoral and lateral compartmental osteoarthritis was analyzed against Oxford and Knee Society scores and amount of ipsilateral residual knee symptoms at 6 months postoperative period. Preoperative Oxford and Knee Society scores, other comorbidities and long-term disability were studied as confounding variables. We found significant improvement in symptoms and scores in spite of other compartment diseases. Poorer outcome was seen in association with comorbidities and long-term disability but not when radiographic signs of arthritis in the other compartments were present. Six patients required revision of which three had (lateral facet) patellofemoral disease in the original X-rays. In conclusion, there is a higher amount of postoperative retained symptoms, but similar outcome when there is radiographic disease in the other compartments. However, when symptoms are severe enough to necessitate revision, this is due to the lateral facet of patellofemoral compartment and not lateral compartment disease.

AB - The purpose of this study is to evaluate the outcome of robotic-assisted (MAKO Surgical Corp.) unicondylar replacement in the treatment for knee osteoarthritis after the initial surgical insult is worn off to evaluate the impact of residual patellofemoral and lateral osteoarthritis on the outcome of medial unicompartmental knee replacement. One hundred and thirty-four patients who underwent uncomplicated 144 robotic-assisted medial unicondylar replacements for knee arthritis were identified and studied. Original radiographs were used to classify severity of patellofemoral and lateral compartmental osteoarthritis in these patients. Severity of patellofemoral and lateral compartmental osteoarthritis was analyzed against Oxford and Knee Society scores and amount of ipsilateral residual knee symptoms at 6 months postoperative period. Preoperative Oxford and Knee Society scores, other comorbidities and long-term disability were studied as confounding variables. We found significant improvement in symptoms and scores in spite of other compartment diseases. Poorer outcome was seen in association with comorbidities and long-term disability but not when radiographic signs of arthritis in the other compartments were present. Six patients required revision of which three had (lateral facet) patellofemoral disease in the original X-rays. In conclusion, there is a higher amount of postoperative retained symptoms, but similar outcome when there is radiographic disease in the other compartments. However, when symptoms are severe enough to necessitate revision, this is due to the lateral facet of patellofemoral compartment and not lateral compartment disease.

KW - Arthroplasty

KW - Knee

KW - Robotics

KW - Unicondylar replacement

UR - http://www.scopus.com/inward/record.url?scp=84903395101&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84903395101&partnerID=8YFLogxK

U2 - 10.1007/s00590-013-1250-x

DO - 10.1007/s00590-013-1250-x

M3 - Article

VL - 24

SP - 805

EP - 812

JO - European Journal of Orthopaedic Surgery and Traumatology

JF - European Journal of Orthopaedic Surgery and Traumatology

SN - 0948-4817

IS - 5

ER -