Assessment of joint line obliquity and its related frontal deformity using long-standing radiographs

Article Orthopedics

Joint Line Obliquity Does Not Affect the Outcomes of Opening Wedge High Tibial Osteotomy at an Average 10-Year Follow-up

Federica Rosso et al.

Summary: This study evaluated the prognostic factors related with the outcomes of opening wedge HTO at 10 years of follow-up, and found that increased lateral JLO was not correlated with the clinical outcomes.

AMERICAN JOURNAL OF SPORTS MEDICINE (2022)

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Article Orthopedics

Excessively Increased Joint-Line Obliquity After Medial Opening-Wedge High Tibial Osteotomy Is Associated With Inferior Radiologic and Clinical Outcomes: What Is Permissible Joint-Line Obliquity

Joo Sung Kim et al.

Summary: This study aimed to evaluate the permissible joint-line obliquity (JLO) based on radiologic and clinical outcomes with midterm follow-up after medial open-wedge high tibial osteotomy (MOWHTO). The study found that a larger medial proximal tibial angle (MPTA) resulted in a sudden increase in joint-line orientation angle (JLOA) and poor clinical outcomes.

ARTHROSCOPY-THE JOURNAL OF ARTHROSCOPIC AND RELATED SURGERY (2022)

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Article Orthopedics

Joint line obliquity was maintained after double-level osteotomy, but was increased after open-wedge high tibial osteotomy

Yasushi Akamatsu et al.

Summary: Treatment with double-level osteotomy (DLO) can maintain joint line obliquity and achieve better arthroscopic and clinical outcomes compared to treatment with open-wedge high tibial osteotomy (OWHTO) alone.

KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY (2022)

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Article Orthopedics

Global varus malalignment increase from double-leg to single-leg stance due to intra-articular changes

Leo-Pohl Bardot et al.

Summary: Preoperatively planned correction for tibial osteotomy surgery is based on weightbearing long-leg X-rays, but the alignment of the lower limb changes significantly in different weightbearing conditions. Varus malalignment increases with weight-bearing loading from double-leg to single-leg stances, suggesting the importance of considering patient-specific changes in joint line convergence when planning the surgery.

KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY (2022)

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Article Orthopedics

Knee-ankle joint line angle: a significant contributor to high-degree knee joint line obliquity in medial opening wedge high tibial osteotomy

Tzu-Hao Tseng et al.

Summary: This study aimed to investigate the compensation ability of the knee joint inclination after medial opening wedge high tibial osteotomy (MOWHTO). The results showed that the postoperative knee-ankle joint line angle (KAJA) significantly contributed to the knee joint line obliquity (KJLO), and the incidence rate of high-grade KJLO increased when the postoperative KAJA exceeded 9.6 degrees.

JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH (2022)

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Article Orthopedics

Effect of distance between the feet on knee joint line orientation after total knee arthroplasty in standing full-limb radiographs

Na-Kyoung Lee et al.

Summary: The KJLO after TKA is strongly influenced by the distance between the feet, with KJLO changing by 3.7 degrees per 100 mm. Standardization of the distance between the feet is necessary for reproducible assessment of KJLO after TKA.

KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY (2022)

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Article Orthopedics

Risk factors and preventive strategy for excessive coronal inclination of tibial plateau following medial opening-wedge high tibial osteotomy

Sueen Sohn et al.

Summary: Preoperative joint line obliquity >= 3 degrees and joint line convergence angle >= 5 degrees were significant risk factors for excessive coronal inclination of tibial plateau following MOWHTO. Surgeons should consider alternative osteotomy techniques if both of these risk factors are present preoperatively in MOWHTO candidates.

ARCHIVES OF ORTHOPAEDIC AND TRAUMA SURGERY (2022)

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Article Orthopedics