[Relevant differences after post-traumatic and degenerative humeral head replacement (intermediate-term results)]

Area of Science:

• Orthopedic Surgery
• Biomaterials Science
• Rehabilitative Medicine

Background:

• Comparative analysis of mid-term outcomes for posttraumatic and degenerative shoulder hemiarthroplasty.
• Evaluation against existing literature data for shoulder joint replacement.

Purpose of the Study:

• To compare mid-term findings of posttraumatic versus degenerative shoulder hemiarthroplasty.
• To assess the impact of primary versus secondary implantation timing in posttraumatic cases.

Main Methods:

• Retrospective study of 26 patients (20 posttraumatic, 6 degenerative).
• Evaluation using Constant Score, subjective patient assessment, and radiographs.
• Follow-up period averaged 38-41 months.

Main Results:

• Posttraumatic group: Constant Score 65; Degenerative group: Constant Score 74.
• Primary posttraumatic implantation (68) superior to secondary (59).
• Significant pain improvement in posttraumatic group; 92% patient satisfaction.

Conclusions:

• Hemiarthroplasty is a suitable alternative for posttraumatic shoulder conditions, especially in older patients, with better outcomes if performed within four weeks.
• Good to excellent results expected for primary osteoarthritis and idiopathic humeral head necrosis.
• Patient compliance and rotator cuff integrity are key factors for successful outcomes in both groups.