Muscle Strength Improves after Abductor-sparing Periacetabular Osteotomy

Ezoe, Masamitsu; Naito, Masatoshi; Asayama, Isao

doi:10.1097/01.blo.0000196475.40151.8b

Cited by 26 publications

(34 citation statements)

References 30 publications

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“…16 We have previously noted that the mean muscle strengths at one year after operation, as measured by the percentage differences of pre-operative values relative to the post-operative state, were 42.2 Nm (129.6%) for the abductor, 39.4 Nm (131.4%) for the adductor, 48.4 Nm (121%) for the flexor and 45.8 Nm (130.5%) for the extensor, all of which exceeded the pre-operative values before curved periacetabular osteotomy. [40][41][42][43] The good results in the present study may be due to the preservation of the gluteal muscles.…”

Section: Discussionmentioning

confidence: 62%

Periacetabular osteotomy reduces the dynamic instability of dysplastic hips

Maeyama

Naito

Moriyama

et al. 2009

The Journal of Bone and Joint Surgery. British volume

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We compared the dynamic instability of 25 dysplastic hips in 25 patients using triaxial accelerometry before and one year after periacetabular osteotomy. We also evaluated the hips clinically using the Harris hip score and assessed acetabular orientation by radiography before surgery and after one year. The mean overall magnitude of acceleration was significantly reduced from 2.30 m/s 2 (SD 0.57) before operation to 1.55 m/s 2 (SD 0.31) afterwards. The mean Harris hip score improved from 78.08 (47 to 96) to 95.36 points (88 to 100). The radiographic parameters all showed significant improvements. This study suggests that periacetabular osteotomy provides pain relief, improves acetabular cover and reduces the dynamic instability in patients with dysplastic hips.

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Section: Discussionmentioning

confidence: 62%

Periacetabular osteotomy reduces the dynamic instability of dysplastic hips

Maeyama

Naito

Moriyama

et al. 2009

The Journal of Bone and Joint Surgery. British volume

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“…The preoperative muscle strength was an essential factor in postoperative muscle strength recovery in patients with DDH, for whom abductor-sparing periacetabular Osteotomy was performed [32]. The posterolateral approach, which has a lesser disruption of abductor musculature and more anatomic dissection [33], should be adopt in patients with DDH performed THA.…”

Section: Discussionmentioning

confidence: 99%

Changes of gluteus medius muscle in the adult patients with unilateral developmental dysplasia of the hip

Liu

Wen

Tong

et al. 2012

BMC Musculoskelet Disord

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BackgroundThe gluteus medius muscle is essential for gait and hip stability. Changes that occur in the gluteus medius muscles in patients with developmental dysplasia of the hip (DDH) are not well understood. A better understanding of DDH related changes will have positive repercussions toward hip soft tissue reconstruction.Methods19 adult patients with unilateral DDH scheduled for total hip arthroplasty were assessed for: cross-sectional area (CSA), radiological density (RD) and the length of gluteus medius using computed tomograhpy(CT) (scanned before THA). Hip abductor moment arm and gluteus medius activation angle were also measured via hip anteroposterior radiographs.ResultsBoth CSA and RD of gluteus medius muscle were significantly reduced (p < 0.05) in the affected hip compared to the control. In the affected hip, the length of the gluteus medius muscle was reduced by 8-11 % (p < 0.05) while the gluteus medius activation angle was significantly increased (p < 0.05) and the hip abductor moment arm was decreased (p < 0.05).ConclusionsThe gluteus medius showed substantial loss of CSA, RD as well as decreased length in patients with DDH in the affected hip. These changes should be considered in both hip reconstruction and postoperative rehabilitation training in patients with DDH.

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“…3 a The custom cutting guide was fixed with three Kirschner wires and the fitting to the pelvis was confirmed using an image intensifier. b The cutting line can be confirmed with an oblique view of the pelvis preservation of abductor muscle strength [23] and blood supply to the rotated acetabulum, and a short skin incision. In addition, the osteotomy is spherical and can avoid anterior overcorrection and non-union of the rotated acetabulum [16].…”

Section: Discussionmentioning

confidence: 99%

Developing a novel custom cutting guide for curved peri-acetabular osteotomy

Otsuki

Takemoto

Kawanabe

et al. 2013

International Orthopaedics (SICOT)

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Purpose Curved peri-acetabular osteotomy (CPO) produces excellent clinical results, but the surgical procedure is technically demanding, and severe complications related to the osteotomy have been reported. To provide a safe, accurate surgical procedure, we have developed a novel method for setting the cutting line and direction. We have designed and made a custom cutting guide for individual patients. The purpose of the study was to evaluate the efficacy of this new method and cutting guide. Methods The cutting line was designed on a full-scale threedimensional plaster model made from computed tomography (CT) data for each case. The surface of each plaster model was colour-coded according to the distance from the centre of the femoral head. A custom cutting guide was designed based on this cutting line on the workstation. A titanium custom cutting guide was fabricated using rapid prototyping technology. The cutting guide directed the cutting direction of the osteotome. We evaluated the outcomes for seven consecutive hips in seven patients who underwent CPO using the system between April and December 2011.All peri-operative complications were recorded. The accuracy of the cutting line was evaluated using CT data obtained two weeks after the operation. Results There were no major complications related to the osteotomy such as posterior column fracture or intraarticular osteotomy. The actual cutting line corresponded almost exactly to the planned cutting line in all cases. Conclusions The colour-coded plaster model and the custom cutting guide were effective for avoiding severe complications associated with a CPO.

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Muscle Strength Improves after Abductor-sparing Periacetabular Osteotomy

Abstract: Prognostic study, Level II (lesser quality prospective study--eg, patients enrolled at different points in their disease or < 80% followup). See the Guidelines for Authors a complete description of levels of evidence.

Cited by 26 publications

References 30 publications

Periacetabular osteotomy reduces the dynamic instability of dysplastic hips

Periacetabular osteotomy reduces the dynamic instability of dysplastic hips

Changes of gluteus medius muscle in the adult patients with unilateral developmental dysplasia of the hip

Developing a novel custom cutting guide for curved peri-acetabular osteotomy

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