Posterior decentering of the humeral head in patients with arthroscopic rotator cuff repair
Background In some patients with rotator cuff tear (RCT), the axial view of magnetic resonance imaging (MRI) shows subtle posterior decentering (PD) of the humeral head from the glenoid fossa. This is considered to result from a loss of centralization that is typically produced by rotator cuff funct...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Korean Shoulder and Elbow Society
2022-03-01
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| Series: | Clinics in Shoulder and Elbow |
| Subjects: | |
| Online Access: | http://www.cisejournal.org/upload/pdf/cise-2021-00507.pdf |
| _version_ | 1797334686174806016 |
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| author | Hidehiro Nakamura Masafumi Gotoh Hirokazu Honda Yasuhiro Mitsui Hiroki Ohzono Naoto Shiba Shinichiro Kume Takahiro Okawa |
| author_facet | Hidehiro Nakamura Masafumi Gotoh Hirokazu Honda Yasuhiro Mitsui Hiroki Ohzono Naoto Shiba Shinichiro Kume Takahiro Okawa |
| author_sort | Hidehiro Nakamura |
| collection | DOAJ |
| description | Background In some patients with rotator cuff tear (RCT), the axial view of magnetic resonance imaging (MRI) shows subtle posterior decentering (PD) of the humeral head from the glenoid fossa. This is considered to result from a loss of centralization that is typically produced by rotator cuff function. There are few reports on PD in RCT despite the common occurrence of posterior subluxation in degenerative joint disease. In this study, we investigated the effect of PD in arthroscopic rotator cuff repair (ARCR). Methods We conducted a retrospective study of consecutive patients who underwent ARCR at our institute and were followed-up for at least 1 year. PD was identified as a 2-mm posterior shift of the humeral head relative to the glenoid fossa in the axial MRI view preoperatively. The tear size and fatty degeneration (FD, Goutallier classification) were also evaluated using preoperative MRI. Retears were evaluated through MRI at 1 year postoperatively. Results We included 135 shoulders in this study. Ten instances of PD (including seven retears) were observed preoperatively. Fifteen retears (three and 12 retears in the small/medium and large/massive tear groups, respectively) were observed postoperatively. PD was significantly correlated with tear size, FD, and retear occurrence (p<0.01 each). The odds ratio for PD in retears was 34.1, which was greater than that for tear size ≥3 cm and FD grade ≥3. Conclusions We concluded that large tear size and FD contribute to the occurrence of PD. Furthermore, PD could be a predictor of retear after ARCR. |
| first_indexed | 2024-03-08T08:24:42Z |
| format | Article |
| id | doaj.art-b23569a0ba194348908d72710faf462c |
| institution | Directory Open Access Journal |
| issn | 2288-8721 |
| language | English |
| last_indexed | 2024-03-08T08:24:42Z |
| publishDate | 2022-03-01 |
| publisher | Korean Shoulder and Elbow Society |
| record_format | Article |
| series | Clinics in Shoulder and Elbow |
| spelling | doaj.art-b23569a0ba194348908d72710faf462c2024-02-02T05:02:41ZengKorean Shoulder and Elbow SocietyClinics in Shoulder and Elbow2288-87212022-03-01251222710.5397/cise.2021.00507843Posterior decentering of the humeral head in patients with arthroscopic rotator cuff repairHidehiro Nakamura0Masafumi Gotoh1Hirokazu Honda2Yasuhiro Mitsui3Hiroki Ohzono4Naoto Shiba5Shinichiro Kume6Takahiro Okawa7 Department of Orthopedic Surgery, Kurume University Medical Center, Fukuoka, Japan Department of Orthopedic Surgery, Kurume University Medical Center, Fukuoka, Japan Department of Orthopedic Surgery, Kurume University Medical Center, Fukuoka, Japan Department of Orthopedic Surgery, Kurume University Medical Center, Fukuoka, Japan Department of Orthopedic Surgery, Kurume University Medical Center, Fukuoka, Japan Department of Orthopedic Surgery, Kurume University, Fukuoka, Japan Department of Orthopedic Surgery, Kurume University Medical Center, Fukuoka, Japan Department of Orthopedic Surgery, Kurume University Medical Center, Fukuoka, JapanBackground In some patients with rotator cuff tear (RCT), the axial view of magnetic resonance imaging (MRI) shows subtle posterior decentering (PD) of the humeral head from the glenoid fossa. This is considered to result from a loss of centralization that is typically produced by rotator cuff function. There are few reports on PD in RCT despite the common occurrence of posterior subluxation in degenerative joint disease. In this study, we investigated the effect of PD in arthroscopic rotator cuff repair (ARCR). Methods We conducted a retrospective study of consecutive patients who underwent ARCR at our institute and were followed-up for at least 1 year. PD was identified as a 2-mm posterior shift of the humeral head relative to the glenoid fossa in the axial MRI view preoperatively. The tear size and fatty degeneration (FD, Goutallier classification) were also evaluated using preoperative MRI. Retears were evaluated through MRI at 1 year postoperatively. Results We included 135 shoulders in this study. Ten instances of PD (including seven retears) were observed preoperatively. Fifteen retears (three and 12 retears in the small/medium and large/massive tear groups, respectively) were observed postoperatively. PD was significantly correlated with tear size, FD, and retear occurrence (p<0.01 each). The odds ratio for PD in retears was 34.1, which was greater than that for tear size ≥3 cm and FD grade ≥3. Conclusions We concluded that large tear size and FD contribute to the occurrence of PD. Furthermore, PD could be a predictor of retear after ARCR.http://www.cisejournal.org/upload/pdf/cise-2021-00507.pdfrotator cuff tearhumeral headshoulder |
| spellingShingle | Hidehiro Nakamura Masafumi Gotoh Hirokazu Honda Yasuhiro Mitsui Hiroki Ohzono Naoto Shiba Shinichiro Kume Takahiro Okawa Posterior decentering of the humeral head in patients with arthroscopic rotator cuff repair Clinics in Shoulder and Elbow rotator cuff tear humeral head shoulder |
| title | Posterior decentering of the humeral head in patients with arthroscopic rotator cuff repair |
| title_full | Posterior decentering of the humeral head in patients with arthroscopic rotator cuff repair |
| title_fullStr | Posterior decentering of the humeral head in patients with arthroscopic rotator cuff repair |
| title_full_unstemmed | Posterior decentering of the humeral head in patients with arthroscopic rotator cuff repair |
| title_short | Posterior decentering of the humeral head in patients with arthroscopic rotator cuff repair |
| title_sort | posterior decentering of the humeral head in patients with arthroscopic rotator cuff repair |
| topic | rotator cuff tear humeral head shoulder |
| url | http://www.cisejournal.org/upload/pdf/cise-2021-00507.pdf |
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