Effect of capsulotomy on hip stability-a consideration during hip arthroscopy

Christopher Bayne, Robert Stanley, Peter Simon, Alejandro Espinoza-Orias, Michael J. Salata, Charles A. Bush-Joseph, Nozomu Inoue, Shane J. Nho

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

We conducted a study to further understand the effect of capsulotomy on hip joint stability using an in vitro cadaver model. Thirteen fresh-frozen cadaveric hip specimens were subjected to an external rotation torque of 0.588 Nm. The experimental kinematics, post-process translation, and rotation data for each specimen were tested under 4 conditions: neutral flexion with capsule intact; neutral flexion with transverse capsulotomy; maximum flexion with capsule intact; and maximum flexion with transverse capsulotomy. A segmented 3-dimensional model of the femur was used to evaluate femoral head translation after application of external rotation torque. In maximum flexion, hips with intact capsules rotated less than hips with capsulotomy in the y (abduction) and z (external rotation) planes (y-plane, P = .01; z-plane, P = .02). After capsulotomy, there was a qualitative observation of increased distal, lateral, and anterior translation of the femoral head in neutral position, and a qualitative observation of increased medial, posterior, and distal translation of the femoral head in flexion. Qualitatively, after capsulotomy, hips tested in neutral position demonstrated more translation than rotation, whereas hips tested in flexion demonstrated more rotation than translation. Capsulotomy appears to permit increased rotation in maximum flexion. Hips tested in neutral trended toward more translation than rotation, whereas hips in flexion trended toward more rotation than translation. Judicious capsular management is indicated during arthroscopic hip procedures.

Original languageEnglish (US)
Pages (from-to)160-165
Number of pages6
JournalAmerican journal of orthopedics (Belle Mead, N.J.)
Volume43
Issue number4
StatePublished - Apr 1 2014
Externally publishedYes

Fingerprint

Arthroscopy
Hip
Thigh
Capsules
Torque
Observation
Hip Joint
Cadaver
Biomechanical Phenomena
Femur

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Bayne, C., Stanley, R., Simon, P., Espinoza-Orias, A., Salata, M. J., Bush-Joseph, C. A., ... Nho, S. J. (2014). Effect of capsulotomy on hip stability-a consideration during hip arthroscopy. American journal of orthopedics (Belle Mead, N.J.), 43(4), 160-165.

Effect of capsulotomy on hip stability-a consideration during hip arthroscopy. / Bayne, Christopher; Stanley, Robert; Simon, Peter; Espinoza-Orias, Alejandro; Salata, Michael J.; Bush-Joseph, Charles A.; Inoue, Nozomu; Nho, Shane J.

In: American journal of orthopedics (Belle Mead, N.J.), Vol. 43, No. 4, 01.04.2014, p. 160-165.

Research output: Contribution to journalArticle

Bayne, C, Stanley, R, Simon, P, Espinoza-Orias, A, Salata, MJ, Bush-Joseph, CA, Inoue, N & Nho, SJ 2014, 'Effect of capsulotomy on hip stability-a consideration during hip arthroscopy', American journal of orthopedics (Belle Mead, N.J.), vol. 43, no. 4, pp. 160-165.
Bayne C, Stanley R, Simon P, Espinoza-Orias A, Salata MJ, Bush-Joseph CA et al. Effect of capsulotomy on hip stability-a consideration during hip arthroscopy. American journal of orthopedics (Belle Mead, N.J.). 2014 Apr 1;43(4):160-165.
Bayne, Christopher ; Stanley, Robert ; Simon, Peter ; Espinoza-Orias, Alejandro ; Salata, Michael J. ; Bush-Joseph, Charles A. ; Inoue, Nozomu ; Nho, Shane J. / Effect of capsulotomy on hip stability-a consideration during hip arthroscopy. In: American journal of orthopedics (Belle Mead, N.J.). 2014 ; Vol. 43, No. 4. pp. 160-165.
@article{d038668ac0bd4648a96efe97444162bf,
title = "Effect of capsulotomy on hip stability-a consideration during hip arthroscopy",
abstract = "We conducted a study to further understand the effect of capsulotomy on hip joint stability using an in vitro cadaver model. Thirteen fresh-frozen cadaveric hip specimens were subjected to an external rotation torque of 0.588 Nm. The experimental kinematics, post-process translation, and rotation data for each specimen were tested under 4 conditions: neutral flexion with capsule intact; neutral flexion with transverse capsulotomy; maximum flexion with capsule intact; and maximum flexion with transverse capsulotomy. A segmented 3-dimensional model of the femur was used to evaluate femoral head translation after application of external rotation torque. In maximum flexion, hips with intact capsules rotated less than hips with capsulotomy in the y (abduction) and z (external rotation) planes (y-plane, P = .01; z-plane, P = .02). After capsulotomy, there was a qualitative observation of increased distal, lateral, and anterior translation of the femoral head in neutral position, and a qualitative observation of increased medial, posterior, and distal translation of the femoral head in flexion. Qualitatively, after capsulotomy, hips tested in neutral position demonstrated more translation than rotation, whereas hips tested in flexion demonstrated more rotation than translation. Capsulotomy appears to permit increased rotation in maximum flexion. Hips tested in neutral trended toward more translation than rotation, whereas hips in flexion trended toward more rotation than translation. Judicious capsular management is indicated during arthroscopic hip procedures.",
author = "Christopher Bayne and Robert Stanley and Peter Simon and Alejandro Espinoza-Orias and Salata, {Michael J.} and Bush-Joseph, {Charles A.} and Nozomu Inoue and Nho, {Shane J.}",
year = "2014",
month = "4",
day = "1",
language = "English (US)",
volume = "43",
pages = "160--165",
journal = "American Journal of Orthopedics",
issn = "1078-4519",
publisher = "Quadrant Healthcom Inc.",
number = "4",

}

TY - JOUR

T1 - Effect of capsulotomy on hip stability-a consideration during hip arthroscopy

AU - Bayne, Christopher

AU - Stanley, Robert

AU - Simon, Peter

AU - Espinoza-Orias, Alejandro

AU - Salata, Michael J.

AU - Bush-Joseph, Charles A.

AU - Inoue, Nozomu

AU - Nho, Shane J.

PY - 2014/4/1

Y1 - 2014/4/1

N2 - We conducted a study to further understand the effect of capsulotomy on hip joint stability using an in vitro cadaver model. Thirteen fresh-frozen cadaveric hip specimens were subjected to an external rotation torque of 0.588 Nm. The experimental kinematics, post-process translation, and rotation data for each specimen were tested under 4 conditions: neutral flexion with capsule intact; neutral flexion with transverse capsulotomy; maximum flexion with capsule intact; and maximum flexion with transverse capsulotomy. A segmented 3-dimensional model of the femur was used to evaluate femoral head translation after application of external rotation torque. In maximum flexion, hips with intact capsules rotated less than hips with capsulotomy in the y (abduction) and z (external rotation) planes (y-plane, P = .01; z-plane, P = .02). After capsulotomy, there was a qualitative observation of increased distal, lateral, and anterior translation of the femoral head in neutral position, and a qualitative observation of increased medial, posterior, and distal translation of the femoral head in flexion. Qualitatively, after capsulotomy, hips tested in neutral position demonstrated more translation than rotation, whereas hips tested in flexion demonstrated more rotation than translation. Capsulotomy appears to permit increased rotation in maximum flexion. Hips tested in neutral trended toward more translation than rotation, whereas hips in flexion trended toward more rotation than translation. Judicious capsular management is indicated during arthroscopic hip procedures.

AB - We conducted a study to further understand the effect of capsulotomy on hip joint stability using an in vitro cadaver model. Thirteen fresh-frozen cadaveric hip specimens were subjected to an external rotation torque of 0.588 Nm. The experimental kinematics, post-process translation, and rotation data for each specimen were tested under 4 conditions: neutral flexion with capsule intact; neutral flexion with transverse capsulotomy; maximum flexion with capsule intact; and maximum flexion with transverse capsulotomy. A segmented 3-dimensional model of the femur was used to evaluate femoral head translation after application of external rotation torque. In maximum flexion, hips with intact capsules rotated less than hips with capsulotomy in the y (abduction) and z (external rotation) planes (y-plane, P = .01; z-plane, P = .02). After capsulotomy, there was a qualitative observation of increased distal, lateral, and anterior translation of the femoral head in neutral position, and a qualitative observation of increased medial, posterior, and distal translation of the femoral head in flexion. Qualitatively, after capsulotomy, hips tested in neutral position demonstrated more translation than rotation, whereas hips tested in flexion demonstrated more rotation than translation. Capsulotomy appears to permit increased rotation in maximum flexion. Hips tested in neutral trended toward more translation than rotation, whereas hips in flexion trended toward more rotation than translation. Judicious capsular management is indicated during arthroscopic hip procedures.

UR - http://www.scopus.com/inward/record.url?scp=84921920901&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84921920901&partnerID=8YFLogxK

M3 - Article

C2 - 24730000

AN - SCOPUS:84921920901

VL - 43

SP - 160

EP - 165

JO - American Journal of Orthopedics

JF - American Journal of Orthopedics

SN - 1078-4519

IS - 4

ER -