What question did this study set out to answer?

To evaluate whether shifting soft tissue alignment during capsular closure of a parapatellar arthrotomy alters patellar kinematics and passive knee range of motion.

January 18, 2013Knee Surgery Sports Traumatology Arthroscopy

Non‐anatomical capsular closure of a standard parapatellar knee arthrotomy leads to patellar maltracking and decreased range of motion: a cadaver study

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Authors

JPJohannes F. PlateUniversity of Pittsburgh TSThorsten M. SeylerDuke Medical Center JHJason J. HalvorsonAtrium Health Wake Forest Baptist

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Implication

Cadaver study demonstrates impaired flexion and patellar maltracking in native human knees, highlighting the need for precise anatomical extensor mechanism closure.

Key Points

To evaluate whether shifting soft tissue alignment during capsular closure of a parapatellar arthrotomy alters patellar kinematics and passive knee range of motion.
Examined seven native human cadaveric knee joints without arthroplasty components (N=7).
Performed capsular closure with figure-of-eight sutures in five positions: anatomical alignment, 1.5 cm or 3.0 cm distal shift, and 1.5 cm or 3.0 cm proximal shift, recording kinematics with an optical navigation system.
Maximum knee flexion decreased significantly from 147° ± 4.1° with anatomical closure to 139° ± 6.4° with a 3 cm distal shift (p < 0.05) and 133° ± 8.2° with a 3 cm proximal shift (p < 0.001).
Distal closure shifts of 1.5 cm and 3.0 cm increased lateral patellar shift (p < 0.01) and decreased patellar tilt at 90° and 120° of flexion, while all non-anatomical positions significantly altered patellar rotation at 45°, 90°, and 120° (p < 0.001).

Cite This Study

Plate et al. (2013) studied this question.

synapsesocial.com/papers/69ffd8ed4716aad0cc857dcf https://doi.org/10.1007/s00167-013-2369-3

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Implication

Cadaver study demonstrates impaired flexion and patellar maltracking in native human knees, highlighting the need for precise anatomical extensor mechanism closure.

Non‐anatomical capsular closure of a standard parapatellar knee arthrotomy leads to patellar maltracking and decreased range of motion: a cadaver study

Discussion

Member takes

Implication

Key Points

Cite This Study

Non‐anatomical capsular closure of a standard parapatellar knee arthrotomy leads to patellar maltracking and decreased range of motion: a cadaver study

Discussion

Member takes

Implication

Key Points

Cite This Study

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