Pelvic Flexion Measurement From Lateral Projection Radiographs is Clinically Reliable

Imai, Norio; Ito, Tomoyuki; Suda, Kazuaki; Miyasaka, Dai; Endo, Naoto

doi:10.1007/s11999-012-2700-1

Cited by 33 publications

(38 citation statements)

References 22 publications

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“…However, few studies have examined the accuracy of SS. Some reports evaluated the accuracy of the pelvic flexion angle measured by manually identifying the locations of bilateral anterior superior iliac spine and the pubic symphysis by using synthesized lateral pelvic radiographs from a CT-based surgical navigation system [14,24]. They found both intra-and inter-observer error to be small and the results to be highly correlated.…”

Section: Introductionmentioning

confidence: 99%

Are Measurements of Sacral Slopes Reliable?

Imai¹,

Miyasaka²,

Horigome³

et al. 2014

AJCMR

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Background: Malpositioning during total hip arthroplasty may cause dislocation, pain, and other complications. To evaluate the potential of sacral slope (SS) as a reliable parameter of pelvic flexion. Methods: We developed a model of pelvic flexion to determine the intraobserver and interobserver variability and reliability of SS measurements by lateral radiography by three independent observers. Results: Measurement error was 1.2° and the intraobserver reliability was moderate to substantial (Interclass correlation coefficient: 0.31 to 0.66). Based on the Spearman-Brown formula, the measurement is reliable if it is done at least seven times by two observers, and four times by three observers. Conclusions: The data suggest that measurement of SS of pelvic flexion is a clinically useful parameter for the optimization of THA conditions.

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Section: Introductionmentioning

confidence: 99%

Are Measurements of Sacral Slopes Reliable?

Imai¹,

Miyasaka²,

Horigome³

et al. 2014

AJCMR

Self Cite

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“…The patient had left hip OA without hip pain. Some reports have described that in patients with advanced hip OA, external rotation of the hip joint tends to occur, and the pelvis are easy to take stoop [17]. We supposed that the patient had injured her MPFL when she fell down the stairs and landed on her left foot, during which a valgus force was applied to her left knee because her left hip leaned to compensate for the gluteus medius dysfunction, similar to that observed in Duchenne muscular dystrophy.…”

Section: Discussionmentioning

confidence: 90%

Medial Patellofemoral Ligament Reconstruction Using the Hamstring Tendon for Patellofemoral Joint Instability in an 81-Year-Old Female

Takahashi¹,

Takeshita²

2017

TOORTHJ

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Introduction:Chronic patellofemoral instability occurs mainly in adolescent females and can also be induced by medial patellofemoral ligament (MPFL) injury. There are no case reports of MPFL reconstruction for chronic patellofemoral instability due to MPFL injury in aged populations.Case Presentation:81-year-old female presented with left knee pain, giving way, and patellar instability while climbing stairs, which continued for 18 months. Patellar apprehension test was positive, and roentgenogram showed lateral patellar subluxation. Conservative therapy was not successful; hence, we performed a lateral release and MPFL reconstruction surgery.Operative Procedure:After arthroscopic lateral release, the hamstring tendon was harvested, and a graft composite made of doubled hamstring tendon and polyester tape with a suspensory fixation device was prepared. Then, a femoral bone tunnel was constructed in a socket shape at the anatomical footprint of the MPFL. The graft was passed through the femoral tunnel, and free ends of the graft composite were sutured to the periosteum of the patella, using two suture anchors at 60° of knee flexion with patellar reduction. Physiotherapy was gradually started using a patella-stabilizing orthosis on the first postoperative day. Her Kujala score improved from 66 to 97 points, and Barthel index score improved from 70 to 100 points at 1 year after surgery. She neither developed patellofemoral joint OA nor had any recurrence of symptoms at the 5-year postoperative follow up.ConclusionMPFL reconstruction using the hamstring tendon is an effective procedure for patients with chronic patellofemoral instability even after the age of 80 years.

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“…38 However, the tibia plafond is not flat but rather concave in shape, with an average medial angle of 22 ± 4 degrees at slight varus alignment. 1,21,25 Also, the subchondral bone plate is the cortical endplate located in the calcified region of the articular cartilage. 30 It has been demonstrated that subchondral mineralization is not homogeneously distributed across the articular surface of the distal tibia.…”

Section: Discussionmentioning

confidence: 99%

“…29 The suitability of DRRs as surrogates for standard radiographs was demonstrated in two studies. 16,21 To the best of our knowledge, DRRs have not been used to elucidate how measurements of the MDTA may be influenced by projection angle and patient positioning in the AP view and the HAV. Furthermore, the use of DRRs as a surrogate to conventional radiographs for measurement of the MDTA has not been demonstrated.…”

mentioning

confidence: 99%

Influence of Ankle Position and Radiographic Projection Angle on Measurement of Supramalleolar Alignment on the Anteroposterior and Hindfoot Alignment Views

et al. 2015

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Pelvic Flexion Measurement From Lateral Projection Radiographs is Clinically Reliable

Abstract: Our data suggest measurement of pelvic flexion angle using lateral radiographs is reliable. We recommend the measurement be performed once by two observers for better reliability.

Cited by 33 publications

References 22 publications

Are Measurements of Sacral Slopes Reliable?

Are Measurements of Sacral Slopes Reliable?

Medial Patellofemoral Ligament Reconstruction Using the Hamstring Tendon for Patellofemoral Joint Instability in an 81-Year-Old Female

Influence of Ankle Position and Radiographic Projection Angle on Measurement of Supramalleolar Alignment on the Anteroposterior and Hindfoot Alignment Views

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